HomeMarine aquarium fishBasslets, cardinalfish & hawkfishRed grouper Red grouper (Epinephelus morio) Scientific name: Epinephelus morio Valenciennes, 1828 The Red grouper (Epinephelus morio) is a marine fish of the family Serranidae. Native range: Western Atlantic, North Carolina, USA to southern Brazil, including the Gulf of Mexico, Caribbean, and Bermuda; strays occur north to Massachusetts. BiologyAdults occur mainly over rocky and muddy bottoms. Uncommon around coral reefs. Usually rest on the bottom. Juveniles may be found in shallow water, but adults are usually taken from depths of 70-330 m. Feed on a wide variety of fishes and invertebrates. Are protogynous hermaphrodites. Most females transform to males between ages 7 to 14. Susceptible to red tide toxin (Ptychodiscus brevi). Marketed fresh or frozen. The world record for hook and line, 39 lbs., from Cape Canaveral, Florida.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEpinephelus morioFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length125Common length50.0Depth range5–330 m (16–1083 ft)EnvironmentMarine; reef-associated; non-migratory; depth range 5 - 330 m, usually 70 - 330 mClimateSubtropicalDistributionWestern Atlantic: North Carolina, USA to southern Brazil, including the Gulf of Mexico, Caribbean, and Bermuda; strays occur north to Massachusetts.Conservation status (IUCN)Near Threatened (NT), IUCN Grouper and Wrasse Specialist GroupThreat to humansOtherUsesFisheries: commercial; gamefish: yes; aquarium: public aquariumsResilienceLow, minimum population doubling time 4.5 - 14 years (K=0.1-0.18; tm=4-6; tmax=25; Fec=1.4 million) More basslets, cardinalfish & hawkfishBanggai cardinal fishPterapogon kauderniSwallowtail seaperchAnthias anthiasNassau grouperEpinephelus striatusBlack hamletHypoplectrus nigricansShy hamletHypoplectrus guttavariusGolden hamletHypoplectrus gummiguttaSee all basslets, cardinalfish & hawkfish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026