International Aquatics
Giant Grouper
Giant Grouper
🛡️ 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. For size preference please add a note on your order and we will match your fish to your requested size. If you just want the fish without our QT process, Please email us directly with your order number. Please note this does waive the 15 day guarantee.
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The Giant Grouper (Epinephelus lanceolatus) is an aggressive species that is not reef-safe, admired for its immense size, robust body, mottled brown-green coloration, and commanding presence as the largest bony reef fish in the world.
Males typically grow to massive proportions with bulkier heads and more dominant territorial behavior, while females/juveniles display slightly more streamlined bodies with lighter mottling and less aggressive tendencies.
They reach about 96 inches (8 feet) in length and should only be housed in aquariums of at least 3,000+ gallons, making them suitable primarily for large public aquariums rather than home tanks.
Provide ample open swimming space, sturdy live rock structures, and large hiding caves to mimic their natural reef environment. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79°F, pH ~8.1–8.4), and ensure the system has a heavy-duty secure lid, as this powerful fish can be surprisingly forceful.
Diet should consist of meaty foods such as fish, squid, shrimp, and other protein-rich items, as well as prepared marine carnivore diets. Because of their size and predatory nature, they will consume tankmates that can fit into their mouths. With proper care in a massive setup, this fish makes a stunning centerpiece and living giant of the reef.
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.
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