{"title":"Urchin - Best Selection Worldwide - Fully Quarantined","description":"","products":[{"product_id":"banded-longspine-urchin","title":"Banded Longspine Urchin","description":"\u003cp data-start=\"177\" data-end=\"481\"\u003eMy species\/animal is an \u003cstrong data-start=\"201\" data-end=\"217\"\u003einvertebrate\u003c\/strong\u003e: \u003cstrong data-start=\"219\" data-end=\"272\"\u003eBanded Longspine Urchin (\u003cem data-start=\"246\" data-end=\"269\"\u003eEchinothrix calamaris\u003c\/em\u003e)\u003c\/strong\u003e. It is a \u003cstrong data-start=\"282\" data-end=\"294\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"311\" data-end=\"324\"\u003ereef-safe\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"342\" data-end=\"478\"\u003estriking alternating black-and-white banded spines, long needle-like appearance, nocturnal habits, and unique algae-grazing behavior\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"483\" data-end=\"793\"\u003eMales typically \u003cstrong data-start=\"499\" data-end=\"591\"\u003ecannot be visually distinguished from females, as sea urchins are not sexually dimorphic\u003c\/strong\u003e, while juveniles are \u003cstrong data-start=\"613\" data-end=\"660\"\u003esmaller with shorter, less developed spines\u003c\/strong\u003e. They reach about \u003cstrong data-start=\"679\" data-end=\"729\"\u003e8–10 inches across (spines included) as adults\u003c\/strong\u003e and should be housed in aquariums of at least \u003cstrong data-start=\"776\" data-end=\"790\"\u003e75 gallons\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"795\" data-end=\"1189\"\u003eProvide \u003cstrong data-start=\"803\" data-end=\"890\"\u003eample live rock for grazing and hiding during the day, with open space for movement\u003c\/strong\u003e, and avoid housing with aggressive fish that may nip at spines. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79 °F, pH ~8.1–8.4). Unlike some inverts, a lid is less critical for urchins, but ensure aquascaping is secure, as their movements can dislodge loose rocks or corals.\u003c\/p\u003e\n\u003cp data-start=\"1191\" data-end=\"1518\"\u003eDiet should consist of \u003cstrong data-start=\"1214\" data-end=\"1321\"\u003enatural algae growth, supplemented with dried seaweed (nori), macroalgae, and sinking herbivore pellets\u003c\/strong\u003e if algae is scarce. With proper care, this urchin makes a \u003cstrong data-start=\"1380\" data-end=\"1437\"\u003efascinating and functional addition to reef aquariums\u003c\/strong\u003e, serving as a natural algae controller while providing dramatic visual appeal.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1191\" data-end=\"1518\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609259815097,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/8672831293_8d60b32a50_b-Photoroom.png?v=1787041302"},{"product_id":"blue-dot-pincushion-urchin","title":"Blue Dot Pincushion Urchin","description":"\u003cp data-start=\"103\" data-end=\"437\"\u003eMy species\/animal is an \u003cstrong data-start=\"127\" data-end=\"143\"\u003einvertebrate\u003c\/strong\u003e: \u003cstrong data-start=\"145\" data-end=\"197\"\u003eBlue Dot Pincushion Urchin (\u003cem data-start=\"175\" data-end=\"194\"\u003eAstropyga radiata\u003c\/em\u003e)\u003c\/strong\u003e. It is a \u003cstrong data-start=\"207\" data-end=\"219\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"236\" data-end=\"262\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"280\" data-end=\"434\"\u003ebrilliant reddish to maroon body covered in long spines dotted with iridescent blue spots, striking radial patterns, and unique algae-grazing behavior\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"439\" data-end=\"799\"\u003eMales typically \u003cstrong data-start=\"455\" data-end=\"547\"\u003ecannot be visually distinguished from females, as this species is not sexually dimorphic\u003c\/strong\u003e, while juveniles are \u003cstrong data-start=\"569\" data-end=\"631\"\u003esmaller with shorter spines and less pronounced coloration\u003c\/strong\u003e. They reach about \u003cstrong data-start=\"650\" data-end=\"734\"\u003e8–10 inches across including spines (with a central body diameter of 3–4 inches)\u003c\/strong\u003e and should be housed in aquariums of at least \u003cstrong data-start=\"781\" data-end=\"796\"\u003e100 gallons\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"801\" data-end=\"1218\"\u003eProvide \u003cstrong data-start=\"809\" data-end=\"919\"\u003eample live rock for grazing, open sandy substrate, and plenty of open space to accommodate its long spines\u003c\/strong\u003e. Care should be taken to secure aquascaping, as their movements can dislodge rocks and corals. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79 °F, pH ~8.1–8.4). While they do not jump, a \u003cstrong data-start=\"1128\" data-end=\"1142\"\u003esecure lid\u003c\/strong\u003e is recommended to prevent them from climbing into overflows or equipment.\u003c\/p\u003e\n\u003cp data-start=\"1220\" data-end=\"1593\"\u003eDiet should consist of \u003cstrong data-start=\"1243\" data-end=\"1412\"\u003enatural algae growth, supplemented with dried seaweed (nori), macroalgae, spirulina-based pellets, and occasional scavenged meaty foods such as mysis or brine shrimp\u003c\/strong\u003e. With proper care, this urchin makes a \u003cstrong data-start=\"1452\" data-end=\"1521\"\u003estriking, functional, and hardy addition to a large reef aquarium\u003c\/strong\u003e, serving as both an algae grazer and a stunning display invertebrate.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1220\" data-end=\"1593\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609260339385,"sku":null,"price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/flat_750x_075_f-pad_750x1000_f8f8f8.u3-Photoroom.png?v=1787041308"},{"product_id":"banded-pencil-urchin","title":"Banded Pencil Urchin","description":"\u003cp data-start=\"93\" data-end=\"437\"\u003eMy species\/animal is an \u003cstrong data-start=\"117\" data-end=\"133\"\u003einvertebrate\u003c\/strong\u003e: \u003cstrong data-start=\"135\" data-end=\"177\"\u003eBanded Pencil Urchin (\u003cem data-start=\"159\" data-end=\"170\"\u003eEucidaris\u003c\/em\u003e sp.)\u003c\/strong\u003e. It is a \u003cstrong data-start=\"187\" data-end=\"199\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"216\" data-end=\"242\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"260\" data-end=\"434\"\u003eshort, thick, banded spines that resemble pencils, its armored appearance, algae-grazing behavior, and unique ability to carry shells or debris on its back for camouflage\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"439\" data-end=\"746\"\u003eMales typically \u003cstrong data-start=\"455\" data-end=\"541\"\u003ecannot be distinguished from females, as pencil urchins are not sexually dimorphic\u003c\/strong\u003e, while juveniles are \u003cstrong data-start=\"563\" data-end=\"610\"\u003esmaller with thinner, less developed spines\u003c\/strong\u003e. They reach about \u003cstrong data-start=\"629\" data-end=\"679\"\u003e3–5 inches across (including spines) as adults\u003c\/strong\u003e and should be housed in aquariums of at least \u003cstrong data-start=\"726\" data-end=\"743\"\u003e30–50 gallons\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"748\" data-end=\"1086\"\u003eProvide \u003cstrong data-start=\"756\" data-end=\"838\"\u003eample live rock for grazing and hiding, with a stable sand or rubble substrate\u003c\/strong\u003e, as they can move and topple loose aquascaping. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79 °F, pH ~8.1–8.4). While they do not jump, ensure equipment and corals are secured, since they may knock items over while moving.\u003c\/p\u003e\n\u003cp data-start=\"1088\" data-end=\"1494\"\u003eDiet should consist of \u003cstrong data-start=\"1111\" data-end=\"1239\"\u003ealgae (natural growth on rocks and glass), supplemented with dried seaweed (nori), macroalgae, and sinking herbivore pellets\u003c\/strong\u003e. In some cases, they may also scavenge on leftover meaty foods such as mysis or brine shrimp. With proper care, this urchin makes a \u003cstrong data-start=\"1372\" data-end=\"1422\"\u003ehardy and fascinating addition to the aquarium\u003c\/strong\u003e, serving both as a grazer and a visually unique display invertebrate.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1088\" data-end=\"1494\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609260568761,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/fe4be7521cff44d3dec6675f68ef282741fb0756_1024x1024-Photoroom.png?v=1787041308"},{"product_id":"pincushion-green","title":"Pincushion, Green","description":"\u003cp data-start=\"85\" data-end=\"395\"\u003eMy species\/animal is an \u003cstrong data-start=\"109\" data-end=\"125\"\u003einvertebrate\u003c\/strong\u003e: \u003cstrong data-start=\"127\" data-end=\"171\"\u003eGreen Pincushion Urchin (\u003cem data-start=\"154\" data-end=\"168\"\u003eSalmacis sp.\u003c\/em\u003e)\u003c\/strong\u003e. It is a \u003cstrong data-start=\"181\" data-end=\"193\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"210\" data-end=\"236\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"254\" data-end=\"392\"\u003erounded pincushion-like body, short yet dense green to brown spines, natural camouflage behavior, and effectiveness as an algae grazer\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"397\" data-end=\"749\"\u003eMales typically \u003cstrong data-start=\"413\" data-end=\"515\"\u003ecannot be visually distinguished from females, as this species shows no external sexual dimorphism\u003c\/strong\u003e, while juveniles are \u003cstrong data-start=\"537\" data-end=\"611\"\u003esmaller with paler or less vibrant spine coloration and shorter spines\u003c\/strong\u003e. They reach about \u003cstrong data-start=\"630\" data-end=\"675\"\u003e3–4 inches in diameter (including spines)\u003c\/strong\u003e as adults and should be housed in aquariums of at least \u003cstrong data-start=\"732\" data-end=\"746\"\u003e30 gallons\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"751\" data-end=\"1132\"\u003eProvide \u003cstrong data-start=\"759\" data-end=\"842\"\u003eample live rock for grazing, a sand or rubble substrate, and secure aquascaping\u003c\/strong\u003e, since they often carry algae, shells, or debris on their spines for protection. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79 °F, pH ~8.1–8.4). While they do not jump, a \u003cstrong data-start=\"1037\" data-end=\"1051\"\u003esecure lid\u003c\/strong\u003e is recommended to prevent them from crawling into filter intakes or overflows.\u003c\/p\u003e\n\u003cp data-start=\"1134\" data-end=\"1546\"\u003eDiet should consist of \u003cstrong data-start=\"1157\" data-end=\"1310\"\u003enatural algae growth (film algae, microalgae, and short hair algae), supplemented with dried seaweed (nori), spirulina, and sinking herbivore pellets\u003c\/strong\u003e. If algae is limited in the tank, regular supplementation is required to keep them healthy. With proper care, this urchin makes a \u003cstrong data-start=\"1441\" data-end=\"1487\"\u003ehardy and functional addition to aquariums\u003c\/strong\u003e, offering both algae control and a unique visual appeal.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1134\" data-end=\"1546\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609260634297,"sku":null,"price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/species_95_57897372f2360.w1000.h666-Photoroom.png?v=1787041308"},{"product_id":"blue-tuxedo-urchin","title":"Blue Tuxedo Urchin","description":"\u003cp data-start=\"95\" data-end=\"468\"\u003eMy species\/animal is an \u003cstrong data-start=\"119\" data-end=\"135\"\u003einvertebrate\u003c\/strong\u003e: \u003cstrong data-start=\"137\" data-end=\"181\"\u003eBlue Tuxedo Urchin (\u003cem data-start=\"159\" data-end=\"178\"\u003eMespilia globulus\u003c\/em\u003e)\u003c\/strong\u003e. It is a \u003cstrong data-start=\"191\" data-end=\"203\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"220\" data-end=\"233\"\u003ereef-safe\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"251\" data-end=\"465\"\u003ebrilliant alternating bands of deep blue and black across its body, compact pincushion shape, algae-grazing abilities, and tendency to camouflage itself by carrying shells, rocks, or bits of algae on its spines\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"470\" data-end=\"806\"\u003eMales typically \u003cstrong data-start=\"486\" data-end=\"588\"\u003ecannot be visually distinguished from females, as this species shows no external sexual dimorphism\u003c\/strong\u003e, while juveniles are \u003cstrong data-start=\"610\" data-end=\"668\"\u003esmaller, with less vivid coloration and shorter spines\u003c\/strong\u003e. They reach about \u003cstrong data-start=\"687\" data-end=\"732\"\u003e3–4 inches in diameter (including spines)\u003c\/strong\u003e as adults and should be housed in aquariums of at least \u003cstrong data-start=\"789\" data-end=\"803\"\u003e30 gallons\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"808\" data-end=\"1168\"\u003eProvide \u003cstrong data-start=\"816\" data-end=\"906\"\u003eample live rock for grazing, a stable sand or rubble substrate, and secure aquascaping\u003c\/strong\u003e, since they may carry small objects on their spines. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79 °F, pH ~8.1–8.4). While they do not jump, a \u003cstrong data-start=\"1073\" data-end=\"1087\"\u003esecure lid\u003c\/strong\u003e is recommended to prevent them from crawling into overflows or filter intakes.\u003c\/p\u003e\n\u003cp data-start=\"1170\" data-end=\"1596\"\u003eDiet should consist of \u003cstrong data-start=\"1193\" data-end=\"1327\"\u003enatural algae growth (film and short hair algae), supplemented with dried seaweed (nori), spirulina, and sinking herbivore pellets\u003c\/strong\u003e. If algae is insufficient in the aquarium, regular supplementation is important to prevent starvation. With proper care, this urchin makes a \u003cstrong data-start=\"1469\" data-end=\"1530\"\u003evibrant, hardy, and functional addition to reef aquariums\u003c\/strong\u003e, helping to control algae while standing out as a living jewel.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1170\" data-end=\"1596\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609260830905,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/lightX_35154ee7-162e-4a16-887e-7c7f71bea5ec-Photoroom.png?v=1787041308"},{"product_id":"hairy-pincushion-urchin","title":"Hairy Pincushion Urchin","description":"\u003cp data-start=\"100\" data-end=\"474\"\u003eMy species\/animal is an \u003cstrong data-start=\"124\" data-end=\"140\"\u003einvertebrate\u003c\/strong\u003e: \u003cstrong data-start=\"142\" data-end=\"194\"\u003eHairy Pincushion Urchin (\u003cem data-start=\"169\" data-end=\"191\"\u003eTripneustes gratilla\u003c\/em\u003e)\u003c\/strong\u003e. It is a \u003cstrong data-start=\"204\" data-end=\"216\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"233\" data-end=\"259\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"277\" data-end=\"471\"\u003erounded pincushion body, dense and somewhat “hairy” appearance due to fine spines, striking color variations (ranging from purple, brown, green to white), and excellent algae-grazing ability\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"476\" data-end=\"813\"\u003eMales typically \u003cstrong data-start=\"492\" data-end=\"594\"\u003ecannot be visually distinguished from females, as this species shows no external sexual dimorphism\u003c\/strong\u003e, while juveniles are \u003cstrong data-start=\"616\" data-end=\"675\"\u003esmaller with shorter spines and less intense coloration\u003c\/strong\u003e. They reach about \u003cstrong data-start=\"694\" data-end=\"739\"\u003e4–6 inches in diameter (including spines)\u003c\/strong\u003e as adults and should be housed in aquariums of at least \u003cstrong data-start=\"796\" data-end=\"810\"\u003e55 gallons\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"815\" data-end=\"1169\"\u003eProvide \u003cstrong data-start=\"823\" data-end=\"906\"\u003eample live rock for grazing, a sand or rubble substrate, and stable aquascaping\u003c\/strong\u003e, as they may pick up shells, algae, or small debris to camouflage themselves. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79 °F, pH ~8.1–8.4). A \u003cstrong data-start=\"1074\" data-end=\"1088\"\u003esecure lid\u003c\/strong\u003e is recommended to prevent them from crawling into overflows or filter intakes.\u003c\/p\u003e\n\u003cp data-start=\"1171\" data-end=\"1593\"\u003eDiet should consist of \u003cstrong data-start=\"1194\" data-end=\"1341\"\u003enatural algae growth (macroalgae, film algae, and hair algae), supplemented with dried seaweed (nori), spirulina, and sinking herbivore pellets\u003c\/strong\u003e. In low-algae aquariums, regular supplementation is essential to prevent starvation. With proper care, this urchin makes a \u003cstrong data-start=\"1465\" data-end=\"1513\"\u003euseful and unique addition to reef aquariums\u003c\/strong\u003e, both as an effective algae grazer and as a fascinating display invertebrate.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1171\" data-end=\"1593\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609260863673,"sku":null,"price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/Tripneustes-gratilla_20-Photoroom.png?v=1787041308"},{"product_id":"black-longspine-urchin","title":"Black Longspine Urchin","description":"\u003cp data-start=\"97\" data-end=\"424\"\u003eMy species\/animal is an \u003cstrong data-start=\"121\" data-end=\"137\"\u003einvertebrate\u003c\/strong\u003e: \u003cstrong data-start=\"139\" data-end=\"185\"\u003eBlack Longspine Urchin (\u003cem data-start=\"165\" data-end=\"182\"\u003eDiadema setosum\u003c\/em\u003e)\u003c\/strong\u003e. It is a \u003cstrong data-start=\"195\" data-end=\"207\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"224\" data-end=\"237\"\u003ereef-safe\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"255\" data-end=\"421\"\u003ejet-black body, extremely long thin spines, bright orange eye spot, and striking ability to graze algae effectively while adding dramatic appearance to reef tanks\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"426\" data-end=\"769\"\u003eMales typically \u003cstrong data-start=\"442\" data-end=\"525\"\u003ecannot be distinguished from females, as this species is not sexually dimorphic\u003c\/strong\u003e, while juveniles are \u003cstrong data-start=\"547\" data-end=\"606\"\u003esmaller with shorter spines and less vibrant coloration\u003c\/strong\u003e. They reach about \u003cstrong data-start=\"625\" data-end=\"705\"\u003e8–10 inches across including spines (with the body itself around 3–4 inches)\u003c\/strong\u003e and should be housed in aquariums of at least \u003cstrong data-start=\"752\" data-end=\"766\"\u003e75 gallons\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"771\" data-end=\"1120\"\u003eProvide \u003cstrong data-start=\"779\" data-end=\"899\"\u003eample live rock for grazing and hiding during the day, with open swimming space for their long spines to move freely\u003c\/strong\u003e. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79 °F, pH ~8.1–8.4). A secure lid is recommended, not because they jump, but to prevent them from dislodging equipment or crawling into overflow areas.\u003c\/p\u003e\n\u003cp data-start=\"1122\" data-end=\"1519\"\u003eDiet should consist of \u003cstrong data-start=\"1145\" data-end=\"1272\"\u003enatural algae (film, hair, and macroalgae) supplemented with dried seaweed (nori), spirulina, and sinking herbivore pellets\u003c\/strong\u003e. They may also scavenge leftover meaty foods like mysis or brine shrimp if available. With proper care, this urchin makes a \u003cstrong data-start=\"1397\" data-end=\"1457\"\u003ehardy, eye-catching, and useful addition to the aquarium\u003c\/strong\u003e, acting as both a grazer and a unique display invertebrate.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1122\" data-end=\"1519\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609261256889,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/2016-12-05d-31515-Photoroom.png?v=1787041310"},{"product_id":"green-pincushion-urchin","title":"Green Pincushion Urchin","description":"\u003cp data-start=\"99\" data-end=\"432\"\u003eMy species\/animal is an \u003cstrong data-start=\"123\" data-end=\"139\"\u003einvertebrate\u003c\/strong\u003e: \u003cstrong data-start=\"141\" data-end=\"194\"\u003eGreen Pincushion Urchin (\u003cem data-start=\"168\" data-end=\"191\"\u003eLytechinus variegatus\u003c\/em\u003e)\u003c\/strong\u003e. It is a \u003cstrong data-start=\"204\" data-end=\"216\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"233\" data-end=\"259\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"277\" data-end=\"429\"\u003erounded pincushion shape, vibrant green coloration, ability to camouflage itself with shells and debris, and effectiveness as a natural algae grazer\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"434\" data-end=\"764\"\u003eMales typically \u003cstrong data-start=\"450\" data-end=\"552\"\u003ecannot be visually distinguished from females, as this species shows no external sexual dimorphism\u003c\/strong\u003e, while juveniles are \u003cstrong data-start=\"574\" data-end=\"626\"\u003esmaller with paler coloration and shorter spines\u003c\/strong\u003e. They reach about \u003cstrong data-start=\"645\" data-end=\"690\"\u003e3–4 inches in diameter (including spines)\u003c\/strong\u003e as adults and should be housed in aquariums of at least \u003cstrong data-start=\"747\" data-end=\"761\"\u003e30 gallons\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"766\" data-end=\"1175\"\u003eProvide \u003cstrong data-start=\"774\" data-end=\"878\"\u003eample live rock for grazing, a sand or rubble substrate, and stable aquascaping with hiding crevices\u003c\/strong\u003e, as these urchins may carry small shells or pieces of substrate on their backs. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79 °F, pH ~8.1–8.4). While they do not jump, a \u003cstrong data-start=\"1072\" data-end=\"1086\"\u003esecure lid\u003c\/strong\u003e is recommended to prevent them from crawling into overflows, pumps, or filter intakes.\u003c\/p\u003e\n\u003cp data-start=\"1177\" data-end=\"1595\"\u003eDiet should consist of \u003cstrong data-start=\"1200\" data-end=\"1353\"\u003enatural algae growth (film algae, short hair algae, and microalgae), supplemented with dried seaweed (nori), spirulina, and sinking herbivore pellets\u003c\/strong\u003e. In low-algae aquariums, supplementation is essential to prevent starvation. With proper care, this urchin makes a \u003cstrong data-start=\"1469\" data-end=\"1521\"\u003efunctional and attractive addition to reef tanks\u003c\/strong\u003e, helping to maintain algae control while adding movement and character.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1177\" data-end=\"1595\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609261584569,"sku":null,"price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/pincushion-urchin-Photoroom.png?v=1787041309"},{"product_id":"pincushion-urchin","title":"Pincushion Urchin","description":"\u003cp data-start=\"92\" data-end=\"401\"\u003eMy species\/animal is an \u003cstrong data-start=\"116\" data-end=\"132\"\u003einvertebrate\u003c\/strong\u003e: \u003cstrong data-start=\"134\" data-end=\"181\"\u003ePincushion Urchin (\u003cem data-start=\"155\" data-end=\"178\"\u003eLytechinus variegatus\u003c\/em\u003e)\u003c\/strong\u003e. It is a \u003cstrong data-start=\"191\" data-end=\"203\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"220\" data-end=\"246\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"264\" data-end=\"398\"\u003ecompact, round “pincushion” shape, vibrant green-to-brown coloration, short sturdy spines, and excellent ability to graze on algae\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"403\" data-end=\"735\"\u003eMales typically \u003cstrong data-start=\"419\" data-end=\"521\"\u003ecannot be visually distinguished from females, as this species shows no external sexual dimorphism\u003c\/strong\u003e, while juveniles are \u003cstrong data-start=\"543\" data-end=\"597\"\u003esmaller with lighter coloration and shorter spines\u003c\/strong\u003e. They reach about \u003cstrong data-start=\"616\" data-end=\"661\"\u003e3–4 inches in diameter (including spines)\u003c\/strong\u003e as adults and should be housed in aquariums of at least \u003cstrong data-start=\"718\" data-end=\"732\"\u003e30 gallons\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"737\" data-end=\"1109\"\u003eProvide \u003cstrong data-start=\"745\" data-end=\"828\"\u003eample live rock for grazing, a sand or rubble substrate, and secure aquascaping\u003c\/strong\u003e, as they may carry shells, algae, or other debris on their spines for camouflage. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79 °F, pH ~8.1–8.4). While they don’t jump, a \u003cstrong data-start=\"1023\" data-end=\"1037\"\u003esecure lid\u003c\/strong\u003e is recommended to prevent them from crawling into overflows or pumps.\u003c\/p\u003e\n\u003cp data-start=\"1111\" data-end=\"1540\"\u003eDiet should consist of \u003cstrong data-start=\"1134\" data-end=\"1281\"\u003enatural algae growth (film, short hair algae, and microalgae), supplemented with dried seaweed (nori), spirulina, and sinking herbivore pellets\u003c\/strong\u003e. In aquariums with low algae growth, consistent supplementation is necessary to avoid starvation. With proper care, this urchin makes a \u003cstrong data-start=\"1418\" data-end=\"1476\"\u003efunctional and attractive addition to marine aquariums\u003c\/strong\u003e, providing algae control while adding movement and character.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1111\" data-end=\"1540\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609261715641,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/205474-768x768-Photoroom.png?v=1787041310"},{"product_id":"pink-shortspine-urchin","title":"Pink Shortspine Urchin","description":"\u003cp data-start=\"100\" data-end=\"184\"\u003e\u003cstrong data-start=\"100\" data-end=\"119\"\u003eSpecies\/Animal:\u003c\/strong\u003e (Invertebrates) \u003cstrong data-start=\"136\" data-end=\"162\"\u003ePink Shortspine Urchin\u003c\/strong\u003e (\u003cem data-start=\"164\" data-end=\"181\"\u003eEchinometra sp.\u003c\/em\u003e)\u003c\/p\u003e\n\u003cp data-start=\"186\" data-end=\"524\"\u003eThe Pink Shortspine Urchin is a \u003cstrong data-start=\"218\" data-end=\"230\"\u003epeaceful\u003c\/strong\u003e species that is generally \u003cstrong data-start=\"257\" data-end=\"283\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"301\" data-end=\"405\"\u003ecompact, rounded body, short spines with pink to reddish hues, and excellent algae-grazing abilities\u003c\/strong\u003e. Their vivid coloration and active foraging make them both a functional and decorative addition to marine aquariums.\u003c\/p\u003e\n\u003cp data-start=\"526\" data-end=\"761\"\u003eMales typically \u003cstrong data-start=\"542\" data-end=\"634\"\u003ecannot be visually distinguished from females, as sea urchins are not sexually dimorphic\u003c\/strong\u003e, while \u003cstrong data-start=\"642\" data-end=\"758\"\u003ejuveniles are smaller with proportionally shorter and lighter-colored spines that deepen in color as they mature\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"763\" data-end=\"1013\"\u003eThey reach about \u003cstrong data-start=\"780\" data-end=\"794\"\u003e2–4 inches\u003c\/strong\u003e in size and should be housed in aquariums of at least \u003cstrong data-start=\"849\" data-end=\"863\"\u003e30 gallons\u003c\/strong\u003e, with \u003cstrong data-start=\"870\" data-end=\"919\"\u003eample live rock for grazing and hiding spaces\u003c\/strong\u003e. Ensure stable aquascaping, as they may dislodge loose rocks or coral frags while foraging.\u003c\/p\u003e\n\u003cp data-start=\"1015\" data-end=\"1050\"\u003eMaintain stable water parameters:\u003c\/p\u003e\n\u003cul data-start=\"1051\" data-end=\"1129\"\u003e\n\u003cli data-start=\"1051\" data-end=\"1080\"\u003e\n\u003cp data-start=\"1053\" data-end=\"1080\"\u003e\u003cstrong data-start=\"1053\" data-end=\"1066\"\u003eSalinity:\u003c\/strong\u003e 1.020–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1081\" data-end=\"1109\"\u003e\n\u003cp data-start=\"1083\" data-end=\"1109\"\u003e\u003cstrong data-start=\"1083\" data-end=\"1099\"\u003eTemperature:\u003c\/strong\u003e 72–79°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1110\" data-end=\"1129\"\u003e\n\u003cp data-start=\"1112\" data-end=\"1129\"\u003e\u003cstrong data-start=\"1112\" data-end=\"1119\"\u003epH:\u003c\/strong\u003e 8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1131\" data-end=\"1250\"\u003eA secure lid is \u003cstrong data-start=\"1147\" data-end=\"1164\"\u003enot necessary\u003c\/strong\u003e, as urchins do not jump, but they can climb glass and move objects within the tank.\u003c\/p\u003e\n\u003cp data-start=\"1252\" data-end=\"1605\"\u003e\u003cstrong data-start=\"1252\" data-end=\"1261\"\u003eDiet:\u003c\/strong\u003e Primarily herbivorous, feeding on \u003cstrong data-start=\"1296\" data-end=\"1341\"\u003emicroalgae, coralline algae, and detritus\u003c\/strong\u003e. In aquariums with insufficient algae, their diet should be supplemented with \u003cstrong data-start=\"1420\" data-end=\"1478\"\u003enori (dried seaweed), algae wafers, or sinking pellets\u003c\/strong\u003e. Occasionally, they may accept \u003cstrong data-start=\"1510\" data-end=\"1531\"\u003esmall meaty foods\u003c\/strong\u003e like mysis or brine shrimp, but plant-based food sources are essential.\u003c\/p\u003e\n\u003cp data-start=\"1607\" data-end=\"1789\"\u003eWith proper care, the Pink Shortspine Urchin is a \u003cstrong data-start=\"1657\" data-end=\"1703\"\u003ehardy, attractive, and beneficial addition\u003c\/strong\u003e to reef aquariums, both for its utility in algae control and its unique coloration.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ealgae, etc.], and with proper care this fish makes a standout addition to the aquarium.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1607\" data-end=\"1789\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609261912249,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/common_sea_urchin_by_w00zle-Photoroom.png?v=1787041310"},{"product_id":"heart-urchin","title":"Heart Urchin","description":"\u003cp data-start=\"128\" data-end=\"200\"\u003e\u003cstrong data-start=\"128\" data-end=\"147\"\u003eSpecies\/Animal:\u003c\/strong\u003e (Invertebrates) \u003cstrong data-start=\"164\" data-end=\"180\"\u003eHeart Urchin\u003c\/strong\u003e (\u003cem data-start=\"182\" data-end=\"197\"\u003eAnametlia sp.\u003c\/em\u003e)\u003c\/p\u003e\n\u003cp data-start=\"202\" data-end=\"387\"\u003eThe Heart Urchin is a \u003cstrong data-start=\"224\" data-end=\"236\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"253\" data-end=\"279\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"297\" data-end=\"384\"\u003eunique burrowing behavior, heart-shaped body, and distinct cross-patterned markings\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"389\" data-end=\"601\"\u003eMales typically \u003cstrong data-start=\"405\" data-end=\"508\"\u003edo not show significant differences from females, as these invertebrates are not sexually dimorphic\u003c\/strong\u003e, while \u003cstrong data-start=\"516\" data-end=\"598\"\u003efemales\/juveniles resemble adults but may be smaller and lighter in coloration\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"603\" data-end=\"848\"\u003eThey reach about \u003cstrong data-start=\"620\" data-end=\"634\"\u003e3–5 inches\u003c\/strong\u003e in adult size and should be housed in aquariums of at least \u003cstrong data-start=\"695\" data-end=\"709\"\u003e30 gallons\u003c\/strong\u003e, with a \u003cstrong data-start=\"718\" data-end=\"761\"\u003edeep sandbed (3–4 inches) for burrowing\u003c\/strong\u003e, some \u003cstrong data-start=\"768\" data-end=\"809\"\u003elive rock for natural habitat balance\u003c\/strong\u003e, and \u003cstrong data-start=\"815\" data-end=\"845\"\u003eample open substrate space\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"850\" data-end=\"889\"\u003eStable water parameters are required:\u003c\/p\u003e\n\u003cul data-start=\"890\" data-end=\"968\"\u003e\n\u003cli data-start=\"890\" data-end=\"919\"\u003e\n\u003cp data-start=\"892\" data-end=\"919\"\u003e\u003cstrong data-start=\"892\" data-end=\"905\"\u003eSalinity:\u003c\/strong\u003e 1.020–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"920\" data-end=\"948\"\u003e\n\u003cp data-start=\"922\" data-end=\"948\"\u003e\u003cstrong data-start=\"922\" data-end=\"938\"\u003eTemperature:\u003c\/strong\u003e 72–79°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"949\" data-end=\"968\"\u003e\n\u003cp data-start=\"951\" data-end=\"968\"\u003e\u003cstrong data-start=\"951\" data-end=\"958\"\u003epH:\u003c\/strong\u003e 8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"970\" data-end=\"1115\"\u003eA secure lid is \u003cstrong data-start=\"986\" data-end=\"1003\"\u003enot necessary\u003c\/strong\u003e since Heart Urchins do not jump, but fine substrate is important for them to sift through and feed naturally.\u003c\/p\u003e\n\u003cp data-start=\"1117\" data-end=\"1407\"\u003e\u003cstrong data-start=\"1117\" data-end=\"1126\"\u003eDiet:\u003c\/strong\u003e Heart Urchins are \u003cstrong data-start=\"1145\" data-end=\"1164\"\u003edeposit feeders\u003c\/strong\u003e, meaning they consume \u003cstrong data-start=\"1187\" data-end=\"1241\"\u003edetritus, microalgae, bacteria, and organic matter\u003c\/strong\u003e filtered from the sand. Supplemental feeding with \u003cstrong data-start=\"1292\" data-end=\"1347\"\u003efine powdered foods, phytoplankton, and marine snow\u003c\/strong\u003e may help in aquariums with low natural food availability.\u003c\/p\u003e\n\u003cp data-start=\"1409\" data-end=\"1560\"\u003eWith proper care, this invertebrate makes a \u003cstrong data-start=\"1453\" data-end=\"1488\"\u003efascinating and unique addition\u003c\/strong\u003e to the aquarium, best suited for peaceful reef or sand-focused tanks.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1409\" data-end=\"1560\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609262272697,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/ce465df6-41c0-4a09-a266-4845a9f45c23-Photoroom.png?v=1787041311"},{"product_id":"pencil-urchin","title":"Pencil Urchin","description":"\u003cp data-start=\"186\" data-end=\"564\"\u003eThe Pencil Urchin is a \u003cstrong data-start=\"209\" data-end=\"228\"\u003esemi-aggressive\u003c\/strong\u003e species that is \u003cstrong data-start=\"245\" data-end=\"271\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"289\" data-end=\"425\"\u003ethick, blunt spines that resemble pencils, unique radial symmetry, and ability to add unusual texture and movement to reef aquariums\u003c\/strong\u003e. While hardy and striking, they may occasionally knock over loose corals or rocks while foraging, so aquascaping stability is important.\u003c\/p\u003e\n\u003cp data-start=\"566\" data-end=\"779\"\u003eMales typically \u003cstrong data-start=\"582\" data-end=\"676\"\u003edo not display external differences from females, as the species is not sexually dimorphic\u003c\/strong\u003e, while \u003cstrong data-start=\"684\" data-end=\"776\"\u003ejuveniles are smaller with proportionally thinner spines and may have lighter coloration\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"781\" data-end=\"1018\"\u003eThey reach about \u003cstrong data-start=\"798\" data-end=\"812\"\u003e3–5 inches\u003c\/strong\u003e in size and should be housed in aquariums of at least \u003cstrong data-start=\"867\" data-end=\"881\"\u003e50 gallons\u003c\/strong\u003e, with \u003cstrong data-start=\"888\" data-end=\"936\"\u003eample live rock for grazing and hiding spots\u003c\/strong\u003e, as well as \u003cstrong data-start=\"949\" data-end=\"980\"\u003ea sandy or rubble substrate\u003c\/strong\u003e to mimic their natural environment.\u003c\/p\u003e\n\u003cp data-start=\"1020\" data-end=\"1055\"\u003eMaintain stable water parameters:\u003c\/p\u003e\n\u003cul data-start=\"1056\" data-end=\"1134\"\u003e\n\u003cli data-start=\"1056\" data-end=\"1085\"\u003e\n\u003cp data-start=\"1058\" data-end=\"1085\"\u003e\u003cstrong data-start=\"1058\" data-end=\"1071\"\u003eSalinity:\u003c\/strong\u003e 1.020–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1086\" data-end=\"1114\"\u003e\n\u003cp data-start=\"1088\" data-end=\"1114\"\u003e\u003cstrong data-start=\"1088\" data-end=\"1104\"\u003eTemperature:\u003c\/strong\u003e 72–79°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1115\" data-end=\"1134\"\u003e\n\u003cp data-start=\"1117\" data-end=\"1134\"\u003e\u003cstrong data-start=\"1117\" data-end=\"1124\"\u003epH:\u003c\/strong\u003e 8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1136\" data-end=\"1287\"\u003eA secure lid is \u003cstrong data-start=\"1152\" data-end=\"1169\"\u003enot necessary\u003c\/strong\u003e, as Pencil Urchins are not jumpers, but tank rockwork should be secured since their movements can dislodge objects.\u003c\/p\u003e\n\u003cp data-start=\"1289\" data-end=\"1645\"\u003e\u003cstrong data-start=\"1289\" data-end=\"1298\"\u003eDiet:\u003c\/strong\u003e Omnivorous. They feed on \u003cstrong data-start=\"1324\" data-end=\"1356\"\u003ealgae, biofilm, and detritus\u003c\/strong\u003e, but may also consume \u003cstrong data-start=\"1379\" data-end=\"1438\"\u003esponges, sessile invertebrates, and occasionally corals\u003c\/strong\u003e. In aquariums, supplemental feeding with \u003cstrong data-start=\"1480\" data-end=\"1573\"\u003edried seaweed (nori), macroalgae, sinking pellets, or small meaty foods like mysis shrimp\u003c\/strong\u003e can help sustain them, especially in newer or lower-nutrient systems.\u003c\/p\u003e\n\u003cp data-start=\"1647\" data-end=\"1837\"\u003eWith proper care, the Pencil Urchin makes a \u003cstrong data-start=\"1691\" data-end=\"1740\"\u003ehardy, unique, and visually striking addition\u003c\/strong\u003e to aquariums, though best kept in systems where delicate corals and frags are securely placed.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1647\" data-end=\"1837\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609262731449,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/heterocentrotus_sp-Photoroom.png?v=1787041316"},{"product_id":"pincushion-green-1","title":"Pincushion, Green","description":"\u003cp\u003e\u003cimg\u003e\u003c\/p\u003e\n\u003cp data-end=\"177\" data-start=\"101\"\u003e\u003cstrong data-end=\"120\" data-start=\"101\"\u003eSpecies\/Animal:\u003c\/strong\u003e (Invertebrates) \u003cstrong data-end=\"158\" data-start=\"137\"\u003ePincushion, Green\u003c\/strong\u003e (\u003cem data-end=\"174\" data-start=\"160\"\u003eSalmacis sp.\u003c\/em\u003e)\u003c\/p\u003e\n\u003cp data-end=\"556\" data-start=\"179\"\u003eThe Green Pincushion Urchin is a \u003cstrong data-end=\"224\" data-start=\"212\"\u003epeaceful\u003c\/strong\u003e species that is generally considered \u003cstrong data-end=\"288\" data-start=\"262\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-end=\"407\" data-start=\"306\"\u003erounded pincushion-like body, vibrant green coloration, and dense covering of short, blunt spines\u003c\/strong\u003e. This urchin is not only eye-catching but also highly valued for its role as a natural algae grazer, helping to maintain a clean reef environment.\u003c\/p\u003e\n\u003cp data-end=\"777\" data-start=\"558\"\u003eMales typically \u003cstrong data-end=\"660\" data-start=\"574\"\u003eshow no visible differences from females, as the species is not sexually dimorphic\u003c\/strong\u003e, while \u003cstrong data-end=\"774\" data-start=\"668\"\u003ejuveniles tend to be smaller with proportionally thinner and lighter spines that darken as they mature\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"1050\" data-start=\"779\"\u003eThey reach about \u003cstrong data-end=\"810\" data-start=\"796\"\u003e3–4 inches\u003c\/strong\u003e in size and should be housed in aquariums of at least \u003cstrong data-end=\"879\" data-start=\"865\"\u003e30 gallons\u003c\/strong\u003e, with \u003cstrong data-end=\"917\" data-start=\"886\"\u003eample live rock for grazing\u003c\/strong\u003e, \u003cstrong data-end=\"952\" data-start=\"919\"\u003eopen sandy areas for movement\u003c\/strong\u003e, and \u003cstrong data-end=\"980\" data-start=\"958\"\u003estable aquascaping\u003c\/strong\u003e, since they can dislodge unsecured rocks and corals while foraging.\u003c\/p\u003e\n\u003cp data-end=\"1087\" data-start=\"1052\"\u003eMaintain stable water parameters:\u003c\/p\u003e\n\u003cul data-end=\"1166\" data-start=\"1088\"\u003e\n\u003cli data-end=\"1117\" data-start=\"1088\"\u003e\n\u003cp data-end=\"1117\" data-start=\"1090\"\u003e\u003cstrong data-end=\"1103\" data-start=\"1090\"\u003eSalinity:\u003c\/strong\u003e 1.020–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1146\" data-start=\"1118\"\u003e\n\u003cp data-end=\"1146\" data-start=\"1120\"\u003e\u003cstrong data-end=\"1136\" data-start=\"1120\"\u003eTemperature:\u003c\/strong\u003e 72–79°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1166\" data-start=\"1147\"\u003e\n\u003cp data-end=\"1166\" data-start=\"1149\"\u003e\u003cstrong data-end=\"1156\" data-start=\"1149\"\u003epH:\u003c\/strong\u003e 8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1286\" data-start=\"1168\"\u003eA secure lid is \u003cstrong data-end=\"1200\" data-start=\"1184\"\u003enot required\u003c\/strong\u003e, as urchins do not jump, but they may climb glass and move objects around the tank.\u003c\/p\u003e\n\u003cp data-end=\"1540\" data-start=\"1288\"\u003e\u003cstrong data-end=\"1297\" data-start=\"1288\"\u003eDiet:\u003c\/strong\u003e Primarily herbivorous, feeding on \u003cstrong data-end=\"1377\" data-start=\"1332\"\u003emicroalgae, coralline algae, and detritus\u003c\/strong\u003e. In tanks with low algae growth, their diet should be supplemented with \u003cstrong data-end=\"1508\" data-start=\"1450\"\u003edried seaweed (nori), algae wafers, or sinking pellets\u003c\/strong\u003e to maintain proper nutrition.\u003c\/p\u003e\n\u003cp data-end=\"1732\" data-start=\"1542\"\u003eWith proper care, the Green Pincushion Urchin is a \u003cstrong data-end=\"1635\" data-start=\"1593\"\u003ehardy, attractive, and useful addition\u003c\/strong\u003e to reef aquariums, both as a functional algae grazer and as a unique invertebrate centerpiece.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-end=\"177\" data-start=\"101\"\u003e\u003cstrong data-end=\"120\" data-start=\"101\"\u003eSpecies\/Animal:\u003c\/strong\u003e (Invertebrates) \u003cstrong data-end=\"158\" data-start=\"137\"\u003ePincushion, Green\u003c\/strong\u003e (\u003cem data-end=\"174\" data-start=\"160\"\u003eSalmacis sp.\u003c\/em\u003e)\u003c\/p\u003e\n\u003cp data-end=\"556\" data-start=\"179\"\u003eThe Green Pincushion Urchin is a \u003cstrong data-end=\"224\" data-start=\"212\"\u003epeaceful\u003c\/strong\u003e species that is generally considered \u003cstrong data-end=\"288\" data-start=\"262\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-end=\"407\" data-start=\"306\"\u003erounded pincushion-like body, vibrant green coloration, and dense covering of short, blunt spines\u003c\/strong\u003e. This urchin is not only eye-catching but also highly valued for its role as a natural algae grazer, helping to maintain a clean reef environment.\u003c\/p\u003e\n\u003cp data-end=\"777\" data-start=\"558\"\u003eMales typically \u003cstrong data-end=\"660\" data-start=\"574\"\u003eshow no visible differences from females, as the species is not sexually dimorphic\u003c\/strong\u003e, while \u003cstrong data-end=\"774\" data-start=\"668\"\u003ejuveniles tend to be smaller with proportionally thinner and lighter spines that darken as they mature\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"1050\" data-start=\"779\"\u003eThey reach about \u003cstrong data-end=\"810\" data-start=\"796\"\u003e3–4 inches\u003c\/strong\u003e in size and should be housed in aquariums of at least \u003cstrong data-end=\"879\" data-start=\"865\"\u003e30 gallons\u003c\/strong\u003e, with \u003cstrong data-end=\"917\" data-start=\"886\"\u003eample live rock for grazing\u003c\/strong\u003e, \u003cstrong data-end=\"952\" data-start=\"919\"\u003eopen sandy areas for movement\u003c\/strong\u003e, and \u003cstrong data-end=\"980\" data-start=\"958\"\u003estable aquascaping\u003c\/strong\u003e, since they can dislodge unsecured rocks and corals while foraging.\u003c\/p\u003e\n\u003cp data-end=\"1087\" data-start=\"1052\"\u003eMaintain stable water parameters:\u003c\/p\u003e\n\u003cul data-end=\"1166\" data-start=\"1088\"\u003e\n\u003cli data-end=\"1117\" data-start=\"1088\"\u003e\n\u003cp data-end=\"1117\" data-start=\"1090\"\u003e\u003cstrong data-end=\"1103\" data-start=\"1090\"\u003eSalinity:\u003c\/strong\u003e 1.020–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1146\" data-start=\"1118\"\u003e\n\u003cp data-end=\"1146\" data-start=\"1120\"\u003e\u003cstrong data-end=\"1136\" data-start=\"1120\"\u003eTemperature:\u003c\/strong\u003e 72–79°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1166\" data-start=\"1147\"\u003e\n\u003cp data-end=\"1166\" data-start=\"1149\"\u003e\u003cstrong data-end=\"1156\" data-start=\"1149\"\u003epH:\u003c\/strong\u003e 8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1286\" data-start=\"1168\"\u003eA secure lid is \u003cstrong data-end=\"1200\" data-start=\"1184\"\u003enot required\u003c\/strong\u003e, as urchins do not jump, but they may climb glass and move objects around the tank.\u003c\/p\u003e\n\u003cp data-end=\"1540\" data-start=\"1288\"\u003e\u003cstrong data-end=\"1297\" data-start=\"1288\"\u003eDiet:\u003c\/strong\u003e Primarily herbivorous, feeding on \u003cstrong data-end=\"1377\" data-start=\"1332\"\u003emicroalgae, coralline algae, and detritus\u003c\/strong\u003e. In tanks with low algae growth, their diet should be supplemented with \u003cstrong data-end=\"1508\" data-start=\"1450\"\u003edried seaweed (nori), algae wafers, or sinking pellets\u003c\/strong\u003e to maintain proper nutrition.\u003c\/p\u003e\n\u003cp data-end=\"1732\" data-start=\"1542\"\u003eWith proper care, the Green Pincushion Urchin is a \u003cstrong data-end=\"1635\" data-start=\"1593\"\u003ehardy, attractive, and useful addition\u003c\/strong\u003e to reef aquariums, both as a functional algae grazer and as a unique invertebrate centerpiece.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ealgae, etc.], and with proper care this fish makes a standout addition to the aquarium.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1732\" data-start=\"1542\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609262796985,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/species_95_57897372f2360.w1000.h666-Photoroom_db2bc778-b028-429e-a41c-5a296d99a862.png?v=1787041317"},{"product_id":"purple-pink-hairy-urchin","title":"Purple\/Pink Hairy Urchin","description":"\u003cp data-start=\"98\" data-end=\"191\"\u003e\u003cstrong data-start=\"98\" data-end=\"117\"\u003eSpecies\/Animal:\u003c\/strong\u003e (Invertebrates) \u003cstrong data-start=\"134\" data-end=\"162\"\u003ePurple\/Pink Hairy Urchin\u003c\/strong\u003e (\u003cem data-start=\"164\" data-end=\"188\"\u003ePseudoboletia maculata\u003c\/em\u003e)\u003c\/p\u003e\n\u003cp data-start=\"193\" data-end=\"553\"\u003eThe Purple\/Pink Hairy Urchin is a \u003cstrong data-start=\"227\" data-end=\"239\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"256\" data-end=\"282\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"300\" data-end=\"453\"\u003ebrilliant purple to pink coloration, distinctive hairy appearance from its long spines, and its ability to graze algae and clean the reef environment\u003c\/strong\u003e. Its striking colors and unusual “hairy” texture make it a true showpiece in any marine aquarium.\u003c\/p\u003e\n\u003cp data-start=\"555\" data-end=\"806\"\u003eMales typically \u003cstrong data-start=\"571\" data-end=\"652\"\u003edo not differ visually from females, as the species is not sexually dimorphic\u003c\/strong\u003e, while \u003cstrong data-start=\"660\" data-end=\"803\"\u003ejuveniles are smaller and often display lighter, less intense coloration with proportionally shorter spines that grow denser as they mature\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"808\" data-end=\"1072\"\u003eThey reach about \u003cstrong data-start=\"825\" data-end=\"839\"\u003e3–4 inches\u003c\/strong\u003e in size and should be housed in aquariums of at least \u003cstrong data-start=\"894\" data-end=\"908\"\u003e40 gallons\u003c\/strong\u003e, with plenty of \u003cstrong data-start=\"925\" data-end=\"968\"\u003elive rock for grazing and hiding spaces\u003c\/strong\u003e, as well as \u003cstrong data-start=\"981\" data-end=\"1003\"\u003estable aquascaping\u003c\/strong\u003e to prevent dislodging of rocks or coral frags as they move around.\u003c\/p\u003e\n\u003cp data-start=\"1074\" data-end=\"1109\"\u003eMaintain stable water parameters:\u003c\/p\u003e\n\u003cul data-start=\"1110\" data-end=\"1188\"\u003e\n\u003cli data-start=\"1110\" data-end=\"1139\"\u003e\n\u003cp data-start=\"1112\" data-end=\"1139\"\u003e\u003cstrong data-start=\"1112\" data-end=\"1125\"\u003eSalinity:\u003c\/strong\u003e 1.020–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1140\" data-end=\"1168\"\u003e\n\u003cp data-start=\"1142\" data-end=\"1168\"\u003e\u003cstrong data-start=\"1142\" data-end=\"1158\"\u003eTemperature:\u003c\/strong\u003e 72–79°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1169\" data-end=\"1188\"\u003e\n\u003cp data-start=\"1171\" data-end=\"1188\"\u003e\u003cstrong data-start=\"1171\" data-end=\"1178\"\u003epH:\u003c\/strong\u003e 8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1190\" data-end=\"1320\"\u003eA secure lid is \u003cstrong data-start=\"1206\" data-end=\"1222\"\u003enot required\u003c\/strong\u003e, as urchins are non-jumpers, but they are mobile and may climb glass or move loose decorations.\u003c\/p\u003e\n\u003cp data-start=\"1322\" data-end=\"1684\"\u003e\u003cstrong data-start=\"1322\" data-end=\"1331\"\u003eDiet:\u003c\/strong\u003e Primarily herbivorous, feeding on \u003cstrong data-start=\"1366\" data-end=\"1420\"\u003emicroalgae, coralline algae, detritus, and biofilm\u003c\/strong\u003e. In aquariums with low algae, supplement their diet with \u003cstrong data-start=\"1478\" data-end=\"1548\"\u003edried seaweed (nori), macroalgae, algae wafers, or sinking pellets\u003c\/strong\u003e. They may also accept \u003cstrong data-start=\"1571\" data-end=\"1592\"\u003esmall meaty foods\u003c\/strong\u003e such as mysis or brine shrimp, though plant-based food sources should be their main diet.\u003c\/p\u003e\n\u003cp data-start=\"1686\" data-end=\"1875\"\u003eWith proper care, the Purple\/Pink Hairy Urchin makes a \u003cstrong data-start=\"1741\" data-end=\"1786\"\u003eunique, colorful, and functional addition\u003c\/strong\u003e to reef aquariums, serving as both an algae grazer and a vibrant display invertebrate.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ealgae, etc.], and with proper care this fish makes a standout addition to the aquarium.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1686\" data-end=\"1875\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609262862521,"sku":null,"price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/OIP-Photoroom_d7e8cacd-383a-47bc-810b-7e109f2126f0.png?v=1787041318"},{"product_id":"needle-pincushion-urchin","title":"Needle Pincushion Urchin","description":"\u003cp data-start=\"214\" data-end=\"581\"\u003eThe Needle Pincushion Urchin is a \u003cstrong data-start=\"248\" data-end=\"260\"\u003epeaceful\u003c\/strong\u003e species that is generally considered \u003cstrong data-start=\"298\" data-end=\"324\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"342\" data-end=\"460\"\u003ecompact pincushion-shaped body, dense covering of sharp, needle-like spines, and excellent algae-grazing abilities\u003c\/strong\u003e. Its unique appearance and useful role in controlling algae growth make it a fascinating addition to marine aquariums.\u003c\/p\u003e\n\u003cp data-start=\"583\" data-end=\"772\"\u003eMales typically \u003cstrong data-start=\"599\" data-end=\"672\"\u003edo not differ from females, as this species is not sexually dimorphic\u003c\/strong\u003e, while \u003cstrong data-start=\"680\" data-end=\"769\"\u003ejuveniles tend to have shorter, lighter-colored spines compared to fully grown adults\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"774\" data-end=\"1120\"\u003eThey reach about \u003cstrong data-start=\"791\" data-end=\"805\"\u003e3–4 inches\u003c\/strong\u003e in size and should be housed in aquariums of at least \u003cstrong data-start=\"860\" data-end=\"874\"\u003e30 gallons\u003c\/strong\u003e, with plenty of \u003cstrong data-start=\"891\" data-end=\"934\"\u003elive rock for grazing and hiding spaces\u003c\/strong\u003e as well as \u003cstrong data-start=\"946\" data-end=\"966\"\u003ea mature sandbed\u003c\/strong\u003e to support their natural feeding habits. Care should be taken to secure the aquascape, as urchins are strong enough to topple loose rocks while moving.\u003c\/p\u003e\n\u003cp data-start=\"1122\" data-end=\"1157\"\u003eMaintain stable water parameters:\u003c\/p\u003e\n\u003cp data-start=\"1160\" data-end=\"1187\"\u003e\u003cstrong data-start=\"1160\" data-end=\"1173\"\u003eSalinity:\u003c\/strong\u003e 1.020–1.025\u003c\/p\u003e\n\u003cp data-start=\"1190\" data-end=\"1216\"\u003e\u003cstrong data-start=\"1190\" data-end=\"1206\"\u003eTemperature:\u003c\/strong\u003e 72–79°F\u003c\/p\u003e\n\u003cp data-start=\"1190\" data-end=\"1216\"\u003e\u003cstrong data-start=\"1219\" data-end=\"1226\"\u003epH:\u003c\/strong\u003e 8.1–8.4\u003c\/p\u003e\n\u003cp data-start=\"1238\" data-end=\"1316\"\u003eA secure lid is \u003cstrong data-start=\"1254\" data-end=\"1271\"\u003enot necessary\u003c\/strong\u003e, as urchins are non-jumping invertebrates.\u003c\/p\u003e\n\u003cp data-start=\"1318\" data-end=\"1529\"\u003e\u003cstrong data-start=\"1318\" data-end=\"1327\"\u003eDiet:\u003c\/strong\u003e Primarily feeds on \u003cstrong data-start=\"1347\" data-end=\"1379\"\u003ealgae, detritus, and biofilm\u003c\/strong\u003e found naturally on rocks and glass. In tanks with low algae, supplement their diet with \u003cstrong data-start=\"1468\" data-end=\"1526\"\u003edried seaweed (nori), algae wafers, or sinking pellets\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1531\" data-end=\"1728\"\u003eWith proper care, the Needle Pincushion Urchin makes a \u003cstrong data-start=\"1586\" data-end=\"1620\"\u003eunique and beneficial addition\u003c\/strong\u003e to reef aquariums, serving both as a natural algae controller and as a striking invertebrate centerpiece.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1531\" data-end=\"1728\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609262960825,"sku":null,"price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/echinostrephusaciculatus2-Photoroom_5f56ffe0-39b4-46d8-9176-7086e6664d75.png?v=1787041319"},{"product_id":"white-ring-shortspine-urchin","title":"White Ring Shortspine Urchin","description":"\u003cp data-start=\"61\" data-end=\"155\"\u003e\u003cstrong data-start=\"61\" data-end=\"80\"\u003eSpecies\/Animal:\u003c\/strong\u003e (Invertebrates) \u003cstrong data-start=\"97\" data-end=\"129\"\u003eWhite Ring Shortspine Urchin\u003c\/strong\u003e (\u003cem data-start=\"131\" data-end=\"152\"\u003eEchinometra mathaei\u003c\/em\u003e)\u003c\/p\u003e\n\u003cp data-start=\"157\" data-end=\"595\"\u003e\u003cstrong data-start=\"157\" data-end=\"173\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"173\" data-end=\"176\"\u003eThe White Ring Shortspine Urchin is a \u003cstrong data-start=\"214\" data-end=\"226\"\u003epeaceful\u003c\/strong\u003e species that is generally considered \u003cstrong data-start=\"264\" data-end=\"290\"\u003ereef-safe with caution\u003c\/strong\u003e. It is admired for its \u003cstrong data-start=\"314\" data-end=\"438\"\u003edistinctive short spines with pale or white ring patterns at their bases, compact body form, and active grazing behavior\u003c\/strong\u003e. This urchin is well known for its ability to control algae growth but may scrape coralline algae and potentially disturb fragile corals if not monitored.\u003c\/p\u003e\n\u003cp data-start=\"597\" data-end=\"621\"\u003e\u003cstrong data-start=\"597\" data-end=\"619\"\u003eSexual Dimorphism:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"622\" data-end=\"825\"\u003e\n\u003cli data-start=\"622\" data-end=\"711\"\u003e\n\u003cp data-start=\"624\" data-end=\"711\"\u003e\u003cstrong data-start=\"624\" data-end=\"633\"\u003eMales\u003c\/strong\u003e and \u003cstrong data-start=\"638\" data-end=\"649\"\u003efemales\u003c\/strong\u003e are externally indistinguishable, as with most sea urchins.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"712\" data-end=\"825\"\u003e\n\u003cp data-start=\"714\" data-end=\"825\"\u003e\u003cstrong data-start=\"714\" data-end=\"727\"\u003eJuveniles\u003c\/strong\u003e tend to have thinner, lighter-colored spines compared to adults, which are darker and sturdier.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"827\" data-end=\"1055\"\u003e\u003cstrong data-start=\"827\" data-end=\"856\"\u003eSize \u0026amp; Tank Requirements:\u003c\/strong\u003e\u003cbr data-start=\"856\" data-end=\"859\"\u003eThey reach about \u003cstrong data-start=\"876\" data-end=\"921\"\u003e3–4 inches in diameter (including spines)\u003c\/strong\u003e and should be housed in aquariums of at least \u003cstrong data-start=\"968\" data-end=\"982\"\u003e50 gallons\u003c\/strong\u003e, as they require stable rockwork for grazing and safe hiding crevices.\u003c\/p\u003e\n\u003cp data-start=\"1057\" data-end=\"1363\"\u003e\u003cstrong data-start=\"1057\" data-end=\"1075\"\u003eHabitat Needs:\u003c\/strong\u003e\u003cbr data-start=\"1075\" data-end=\"1078\"\u003eProvide \u003cstrong data-start=\"1086\" data-end=\"1099\"\u003elive rock\u003c\/strong\u003e for grazing and shelter, as well as \u003cstrong data-start=\"1136\" data-end=\"1160\"\u003estable sandbed areas\u003c\/strong\u003e where the urchin can burrow slightly or anchor itself. Ensure aquascaping is secure, since they can wedge into rocks and push smaller corals or frags out of place. Stable water parameters are crucial:\u003c\/p\u003e\n\u003cul data-start=\"1364\" data-end=\"1442\"\u003e\n\u003cli data-start=\"1364\" data-end=\"1393\"\u003e\n\u003cp data-start=\"1366\" data-end=\"1393\"\u003e\u003cstrong data-start=\"1366\" data-end=\"1379\"\u003eSalinity:\u003c\/strong\u003e 1.020–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1394\" data-end=\"1422\"\u003e\n\u003cp data-start=\"1396\" data-end=\"1422\"\u003e\u003cstrong data-start=\"1396\" data-end=\"1412\"\u003eTemperature:\u003c\/strong\u003e 72–79°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1423\" data-end=\"1442\"\u003e\n\u003cp data-start=\"1425\" data-end=\"1442\"\u003e\u003cstrong data-start=\"1425\" data-end=\"1432\"\u003epH:\u003c\/strong\u003e 8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1444\" data-end=\"1553\"\u003eA lid is not required for jumping but can prevent accidental equipment dislodging caused by their movement.\u003c\/p\u003e\n\u003cp data-start=\"1555\" data-end=\"1868\"\u003e\u003cstrong data-start=\"1555\" data-end=\"1564\"\u003eDiet:\u003c\/strong\u003e\u003cbr data-start=\"1564\" data-end=\"1567\"\u003eThis urchin primarily feeds on \u003cstrong data-start=\"1598\" data-end=\"1637\"\u003ealgae, coralline algae, and biofilm\u003c\/strong\u003e, making it a valuable part of a clean-up crew. In captivity, their diet can be supplemented with \u003cstrong data-start=\"1735\" data-end=\"1800\"\u003enori sheets, spirulina, macroalgae, and sinking algae pellets\u003c\/strong\u003e. If natural algae growth is low, additional feeding is necessary.\u003c\/p\u003e\n\u003cp data-start=\"1870\" data-end=\"2117\"\u003e\u003cstrong data-start=\"1870\" data-end=\"1884\"\u003eCare Note:\u003c\/strong\u003e\u003cbr data-start=\"1884\" data-end=\"1887\"\u003eThe White Ring Shortspine Urchin is hardy and effective at algae control but may consume coralline algae and disturb fragile coral placements. With proper care, it makes a fascinating and functional addition to marine aquariums.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ealgae, etc.], and with proper care this fish makes a standout addition to the aquarium.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1870\" data-end=\"2117\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609263026361,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/Seaurchin-Photoroom.png?v=1787041318"},{"product_id":"slate-pencil-urchin","title":"Slate Pencil Urchin","description":"\u003cp data-start=\"71\" data-end=\"164\"\u003e\u003cstrong data-start=\"71\" data-end=\"90\"\u003eSpecies\/Animal:\u003c\/strong\u003e (Invertebrates) \u003cstrong data-start=\"107\" data-end=\"130\"\u003eSlate Pencil Urchin\u003c\/strong\u003e (\u003cem data-start=\"132\" data-end=\"161\"\u003eHeterocentrotus mammillatus\u003c\/em\u003e)\u003c\/p\u003e\n\u003cp data-start=\"166\" data-end=\"618\"\u003e\u003cstrong data-start=\"166\" data-end=\"182\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"182\" data-end=\"185\"\u003eThe Slate Pencil Urchin is a \u003cstrong data-start=\"214\" data-end=\"226\"\u003epeaceful\u003c\/strong\u003e species that is generally considered \u003cstrong data-start=\"264\" data-end=\"290\"\u003ereef-safe with caution\u003c\/strong\u003e. It is admired for its \u003cstrong data-start=\"314\" data-end=\"424\"\u003ethick, blunt spines that resemble pencils, vibrant reddish to maroon coloration, and sturdy body structure\u003c\/strong\u003e. This species is striking and instantly recognizable among urchins due to its large, smooth, slate-like spines which are often used in crafts and traditional jewelry when collected naturally.\u003c\/p\u003e\n\u003cp data-start=\"620\" data-end=\"644\"\u003e\u003cstrong data-start=\"620\" data-end=\"642\"\u003eSexual Dimorphism:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"645\" data-end=\"898\"\u003e\n\u003cli data-start=\"645\" data-end=\"737\"\u003e\n\u003cp data-start=\"647\" data-end=\"737\"\u003e\u003cstrong data-start=\"647\" data-end=\"656\"\u003eMales\u003c\/strong\u003e cannot be distinguished externally, as urchins lack obvious sexual dimorphism.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"738\" data-end=\"898\"\u003e\n\u003cp data-start=\"740\" data-end=\"898\"\u003e\u003cstrong data-start=\"740\" data-end=\"761\"\u003eFemales\/Juveniles\u003c\/strong\u003e appear similar to males; juveniles are smaller, paler in coloration, and their spines are thinner and more delicate until fully grown.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"900\" data-end=\"1154\"\u003e\u003cstrong data-start=\"900\" data-end=\"929\"\u003eSize \u0026amp; Tank Requirements:\u003c\/strong\u003e\u003cbr data-start=\"929\" data-end=\"932\"\u003eThey reach about \u003cstrong data-start=\"949\" data-end=\"1000\"\u003e6–8 inches in diameter (spine tip to spine tip)\u003c\/strong\u003e and should be housed in aquariums of at least \u003cstrong data-start=\"1047\" data-end=\"1062\"\u003e100 gallons\u003c\/strong\u003e, since they require space for grazing and can grow quite large compared to other urchins.\u003c\/p\u003e\n\u003cp data-start=\"1156\" data-end=\"1441\"\u003e\u003cstrong data-start=\"1156\" data-end=\"1174\"\u003eHabitat Needs:\u003c\/strong\u003e\u003cbr data-start=\"1174\" data-end=\"1177\"\u003eProvide ample \u003cstrong data-start=\"1191\" data-end=\"1204\"\u003elive rock\u003c\/strong\u003e for grazing and stability, with some \u003cstrong data-start=\"1242\" data-end=\"1264\"\u003eopen sandbed areas\u003c\/strong\u003e for movement. Because of their size and strength, they can easily dislodge rock structures, so aquascaping should be secure and stable. Stable water parameters are important:\u003c\/p\u003e\n\u003cul data-start=\"1442\" data-end=\"1520\"\u003e\n\u003cli data-start=\"1442\" data-end=\"1471\"\u003e\n\u003cp data-start=\"1444\" data-end=\"1471\"\u003e\u003cstrong data-start=\"1444\" data-end=\"1457\"\u003eSalinity:\u003c\/strong\u003e 1.020–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1472\" data-end=\"1500\"\u003e\n\u003cp data-start=\"1474\" data-end=\"1500\"\u003e\u003cstrong data-start=\"1474\" data-end=\"1490\"\u003eTemperature:\u003c\/strong\u003e 72–79°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1501\" data-end=\"1520\"\u003e\n\u003cp data-start=\"1503\" data-end=\"1520\"\u003e\u003cstrong data-start=\"1503\" data-end=\"1510\"\u003epH:\u003c\/strong\u003e 8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1522\" data-end=\"1646\"\u003eA secure lid is advisable, not because they jump, but because their strength and movements can push equipment or rockwork.\u003c\/p\u003e\n\u003cp data-start=\"1648\" data-end=\"1970\"\u003e\u003cstrong data-start=\"1648\" data-end=\"1657\"\u003eDiet:\u003c\/strong\u003e\u003cbr data-start=\"1657\" data-end=\"1660\"\u003eSlate Pencil Urchins are \u003cstrong data-start=\"1685\" data-end=\"1707\"\u003eomnivorous grazers\u003c\/strong\u003e, feeding mainly on \u003cstrong data-start=\"1727\" data-end=\"1787\"\u003ealgae (including coralline algae), biofilm, and detritus\u003c\/strong\u003e. In captivity, they should be supplemented with \u003cstrong data-start=\"1836\" data-end=\"1948\"\u003edried seaweed (nori), macroalgae, spirulina pellets, and occasionally meaty foods like mysis or brine shrimp\u003c\/strong\u003e to maintain health.\u003c\/p\u003e\n\u003cp data-start=\"1972\" data-end=\"2300\"\u003e\u003cstrong data-start=\"1972\" data-end=\"1986\"\u003eCare Note:\u003c\/strong\u003e\u003cbr data-start=\"1986\" data-end=\"1989\"\u003eAlthough hardy, they are powerful movers and may knock over corals or unsecured rockwork. They are best suited for larger reef or fish-only systems where their grazing can be beneficial but managed. With proper care, the Slate Pencil Urchin makes a unique and visually impressive addition to marine aquariums.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ealgae, etc.], and with proper care this fish makes a standout addition to the aquarium.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1972\" data-end=\"2300\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609263255737,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/436e8dd2917b607f1590d44a588f2eae-Photoroom.png?v=1787041320"},{"product_id":"sand-dollar","title":"Sand Dollar","description":"\u003cp data-start=\"118\" data-end=\"198\"\u003e\u003cstrong data-start=\"118\" data-end=\"137\"\u003eSpecies\/Animal:\u003c\/strong\u003e (Invertebrates) \u003cstrong data-start=\"154\" data-end=\"169\"\u003eSand Dollar\u003c\/strong\u003e (\u003cem data-start=\"171\" data-end=\"195\"\u003eDendraster excentricus\u003c\/em\u003e)\u003c\/p\u003e\n\u003cp data-start=\"200\" data-end=\"595\"\u003e\u003cstrong data-start=\"200\" data-end=\"216\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"216\" data-end=\"219\"\u003eThe Sand Dollar is a \u003cstrong data-start=\"240\" data-end=\"252\"\u003epeaceful\u003c\/strong\u003e species that is \u003cstrong data-start=\"269\" data-end=\"295\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"313\" data-end=\"400\"\u003eunique flat, disc-like body, intricate patterns, and fascinating burrowing behavior\u003c\/strong\u003e. These invertebrates are not flashy in color but are highly valued for their distinctive shape and natural role as sand sifters, contributing to a cleaner and healthier substrate in aquariums.\u003c\/p\u003e\n\u003cp data-start=\"597\" data-end=\"621\"\u003e\u003cstrong data-start=\"597\" data-end=\"619\"\u003eSexual Dimorphism:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"622\" data-end=\"892\"\u003e\n\u003cli data-start=\"622\" data-end=\"770\"\u003e\n\u003cp data-start=\"624\" data-end=\"770\"\u003e\u003cstrong data-start=\"624\" data-end=\"633\"\u003eMales\u003c\/strong\u003e typically appear similar in external structure to females and are not visually distinguishable; reproductive differences are internal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"771\" data-end=\"892\"\u003e\n\u003cp data-start=\"773\" data-end=\"892\"\u003e\u003cstrong data-start=\"773\" data-end=\"794\"\u003eFemales\/Juveniles\u003c\/strong\u003e resemble males in appearance, with juveniles being smaller and lighter in color until maturity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"894\" data-end=\"1100\"\u003e\u003cstrong data-start=\"894\" data-end=\"923\"\u003eSize \u0026amp; Tank Requirements:\u003c\/strong\u003e\u003cbr data-start=\"923\" data-end=\"926\"\u003eThey reach about \u003cstrong data-start=\"943\" data-end=\"969\"\u003e3–4 inches in diameter\u003c\/strong\u003e and should be housed in aquariums of at least \u003cstrong data-start=\"1016\" data-end=\"1030\"\u003e50 gallons\u003c\/strong\u003e, ideally with a \u003cstrong data-start=\"1047\" data-end=\"1071\"\u003emature, deep sandbed\u003c\/strong\u003e for burrowing and feeding.\u003c\/p\u003e\n\u003cp data-start=\"1102\" data-end=\"1324\"\u003e\u003cstrong data-start=\"1102\" data-end=\"1120\"\u003eHabitat Needs:\u003c\/strong\u003e\u003cbr data-start=\"1120\" data-end=\"1123\"\u003eProvide a \u003cstrong data-start=\"1133\" data-end=\"1149\"\u003efine sandbed\u003c\/strong\u003e (essential for burrowing), some \u003cstrong data-start=\"1182\" data-end=\"1221\"\u003elive rock for biological filtration\u003c\/strong\u003e, and \u003cstrong data-start=\"1227\" data-end=\"1247\"\u003eopen sandy space\u003c\/strong\u003e rather than crowded rock structures. Stable water parameters are critical:\u003c\/p\u003e\n\u003cul data-start=\"1325\" data-end=\"1406\"\u003e\n\u003cli data-start=\"1325\" data-end=\"1355\"\u003e\n\u003cp data-start=\"1327\" data-end=\"1355\"\u003e\u003cstrong data-start=\"1327\" data-end=\"1340\"\u003eSalinity:\u003c\/strong\u003e ~1.020–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1356\" data-end=\"1385\"\u003e\n\u003cp data-start=\"1358\" data-end=\"1385\"\u003e\u003cstrong data-start=\"1358\" data-end=\"1374\"\u003eTemperature:\u003c\/strong\u003e ~72–79°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1386\" data-end=\"1406\"\u003e\n\u003cp data-start=\"1388\" data-end=\"1406\"\u003e\u003cstrong data-start=\"1388\" data-end=\"1395\"\u003epH:\u003c\/strong\u003e ~8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1408\" data-end=\"1557\"\u003eA secure lid is recommended for aquariums, though Sand Dollars are not jumpers; the lid prevents disturbances and helps maintain stable conditions.\u003c\/p\u003e\n\u003cp data-start=\"1559\" data-end=\"1954\"\u003e\u003cstrong data-start=\"1559\" data-end=\"1568\"\u003eDiet:\u003c\/strong\u003e\u003cbr data-start=\"1568\" data-end=\"1571\"\u003eSand Dollars are primarily \u003cstrong data-start=\"1598\" data-end=\"1633\"\u003edetritivores and filter feeders\u003c\/strong\u003e, sifting through sand to consume microscopic algae, organic detritus, and plankton. In captivity, their diet should consist of \u003cstrong data-start=\"1761\" data-end=\"1818\"\u003emicroalgae, phytoplankton, and fine particulate foods\u003c\/strong\u003e such as powdered invertebrate foods, with occasional supplementation of \u003cstrong data-start=\"1891\" data-end=\"1933\"\u003emysis or enriched brine shrimp nauplii\u003c\/strong\u003e in very fine form.\u003c\/p\u003e\n\u003cp data-start=\"1956\" data-end=\"2211\"\u003e\u003cstrong data-start=\"1956\" data-end=\"1970\"\u003eCare Note:\u003c\/strong\u003e\u003cbr data-start=\"1970\" data-end=\"1973\"\u003eSand Dollars are \u003cstrong data-start=\"1990\" data-end=\"2016\"\u003esensitive in captivity\u003c\/strong\u003e, requiring mature aquariums with stable sandbeds and abundant microfauna. With proper care, this fascinating invertebrate makes a standout and unusual addition to specialized marine aquariums.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ealgae, etc.], and with proper care this fish makes a standout addition to the aquarium.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1956\" data-end=\"2211\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609263386809,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/156393-15copy-Photoroom.png?v=1787041319"},{"product_id":"shortspine-urchin","title":"Shortspine Urchin","description":"\u003cp data-start=\"70\" data-end=\"149\"\u003e\u003cstrong data-start=\"70\" data-end=\"89\"\u003eSpecies\/Animal:\u003c\/strong\u003e (Invertebrates) \u003cstrong data-start=\"106\" data-end=\"127\"\u003eShortspine Urchin\u003c\/strong\u003e (\u003cem data-start=\"129\" data-end=\"142\"\u003eEchinometra\u003c\/em\u003e sp.)\u003c\/p\u003e\n\u003cp data-start=\"151\" data-end=\"651\"\u003e\u003cstrong data-start=\"151\" data-end=\"167\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"167\" data-end=\"170\"\u003eThe Shortspine Urchin is a \u003cstrong data-start=\"197\" data-end=\"209\"\u003epeaceful\u003c\/strong\u003e species that is generally considered \u003cstrong data-start=\"247\" data-end=\"273\"\u003ereef-safe with caution\u003c\/strong\u003e, admired for its \u003cstrong data-start=\"291\" data-end=\"382\"\u003ecompact round body, relatively short spines, and ability to graze on algae and detritus\u003c\/strong\u003e. Unlike long-spined urchins, it has sturdier, shorter spines, making it easier to keep in community aquariums. Its colors can range from purple to pink, brown, or reddish tones, often with banding or speckled patterns, making it an attractive addition to reef tanks.\u003c\/p\u003e\n\u003cp data-start=\"653\" data-end=\"677\"\u003e\u003cstrong data-start=\"653\" data-end=\"675\"\u003eSexual Dimorphism:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"678\" data-end=\"898\"\u003e\n\u003cli data-start=\"678\" data-end=\"793\"\u003e\n\u003cp data-start=\"680\" data-end=\"793\"\u003e\u003cstrong data-start=\"680\" data-end=\"689\"\u003eMales\u003c\/strong\u003e and \u003cstrong data-start=\"694\" data-end=\"705\"\u003efemales\u003c\/strong\u003e appear nearly identical externally, as urchins do not show obvious sexual dimorphism.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"794\" data-end=\"898\"\u003e\n\u003cp data-start=\"796\" data-end=\"898\"\u003e\u003cstrong data-start=\"796\" data-end=\"809\"\u003eJuveniles\u003c\/strong\u003e are smaller, lighter in coloration, and develop stronger spine density as they mature.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"900\" data-end=\"1039\"\u003e\u003cstrong data-start=\"900\" data-end=\"929\"\u003eSize \u0026amp; Tank Requirements:\u003c\/strong\u003e\u003cbr data-start=\"929\" data-end=\"932\"\u003eThey reach about \u003cstrong data-start=\"949\" data-end=\"975\"\u003e3–4 inches in diameter\u003c\/strong\u003e and should be housed in aquariums of at least \u003cstrong data-start=\"1022\" data-end=\"1036\"\u003e30 gallons\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1041\" data-end=\"1291\"\u003e\u003cstrong data-start=\"1041\" data-end=\"1059\"\u003eHabitat Needs:\u003c\/strong\u003e\u003cbr data-start=\"1059\" data-end=\"1062\"\u003eProvide plenty of \u003cstrong data-start=\"1080\" data-end=\"1093\"\u003elive rock\u003c\/strong\u003e for grazing, stable structures to climb, and areas of \u003cstrong data-start=\"1148\" data-end=\"1164\"\u003eopen sandbed\u003c\/strong\u003e for movement. They may also appreciate hiding spaces in rock crevices during the day. Stable water parameters are essential:\u003c\/p\u003e\n\u003cul data-start=\"1292\" data-end=\"1370\"\u003e\n\u003cli data-start=\"1292\" data-end=\"1321\"\u003e\n\u003cp data-start=\"1294\" data-end=\"1321\"\u003e\u003cstrong data-start=\"1294\" data-end=\"1307\"\u003eSalinity:\u003c\/strong\u003e 1.020–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1322\" data-end=\"1350\"\u003e\n\u003cp data-start=\"1324\" data-end=\"1350\"\u003e\u003cstrong data-start=\"1324\" data-end=\"1340\"\u003eTemperature:\u003c\/strong\u003e 72–79°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1351\" data-end=\"1370\"\u003e\n\u003cp data-start=\"1353\" data-end=\"1370\"\u003e\u003cstrong data-start=\"1353\" data-end=\"1360\"\u003epH:\u003c\/strong\u003e 8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1372\" data-end=\"1487\"\u003eA secure lid is recommended, since urchins may dislodge rocks or equipment as they move, though they do not jump.\u003c\/p\u003e\n\u003cp data-start=\"1489\" data-end=\"1784\"\u003e\u003cstrong data-start=\"1489\" data-end=\"1498\"\u003eDiet:\u003c\/strong\u003e\u003cbr data-start=\"1498\" data-end=\"1501\"\u003eShortspine Urchins are primarily \u003cstrong data-start=\"1534\" data-end=\"1565\"\u003eherbivores and detritivores\u003c\/strong\u003e, feeding on \u003cstrong data-start=\"1578\" data-end=\"1652\"\u003ealgae (film algae, coralline algae, macroalgae), biofilm, and detritus\u003c\/strong\u003e. In captivity, their diet can be supplemented with \u003cstrong data-start=\"1704\" data-end=\"1781\"\u003edried seaweed (nori), algae wafers, and occasional microalgae-based foods\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1786\" data-end=\"2043\"\u003e\u003cstrong data-start=\"1786\" data-end=\"1800\"\u003eCare Note:\u003c\/strong\u003e\u003cbr data-start=\"1800\" data-end=\"1803\"\u003eWhile hardy and useful for algae control, they may scrape coralline algae and occasionally knock over unsecured corals or rockwork. With proper care, the Shortspine Urchin makes a practical and fascinating addition to the marine aquarium.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ealgae, etc.], and with proper care this fish makes a standout addition to the aquarium.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInternational Aquatics Quarantine \u0026amp; Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos\/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSeveral species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1786\" data-end=\"2043\"\u003e \u003c\/p\u003e","brand":"International Aquatics","offers":[{"title":"Default Title","offer_id":48609263517881,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/2472\/1849\/files\/echinometra-mathaei-rock-burrowing-urchin-Photoroom.png?v=1787041320"}],"url":"https:\/\/internationalaquatics.com\/collections\/urchin-best-selection-worldwide-fully-quarantined.oembed?page=2","provider":"International Aquatics Fish \u0026 Corals","version":"1.0","type":"link"}