Orange Ridge Sea Star

Orange Ridge Sea Star (Echinaster spinulosus) is a peaceful species that is reef-safe with caution, admired for its bright orange coloration, raised ridged arms, and textured surface covered with small spines. Males typically show little visual difference from females but may be slightly smaller in size, while females/juveniles appear similar in shape and coloration, though juveniles are often paler until maturity. They reach about 6–8 inches and should be housed in aquariums of at least 50 gallons.

Provide ample live rock and a mature sandbed to allow for natural foraging, along with stable water parameters (salinity ~1.020–1.025, temp ~72–79°F, pH ~8.1–8.4). Unlike fish, sea stars will not jump, but aquariums should still be stable and secure.

Diet should consist of film algae, detritus, small invertebrates, and supplemental feedings of meaty foods such as mysis shrimp or clam meat. With proper care, this sea star makes a standout addition to a reef or peaceful community aquarium, adding both color and unique movement.

International Aquatics Quarantine & 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.

Several 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.