HomeMarine aquarium fishBasslets, cardinalfish & hawkfishTiger grouper Tiger grouper (Mycteroperca tigris) Scientific name: Mycteroperca tigris Valenciennes, 1833 The Tiger grouper (Mycteroperca tigris) is a marine fish of the family Serranidae. BiologyA solitary species occurring in coral reefs and rocky areas. It is considered an ambush predator that hides among the coral and sponges and is easy to approach. Frequents cleaning stations. The size versus sex distribution of Bermuda population indicates that this species is a protogynous hermaphrodite; all fish less than 37 cm TL were females and all fish larger than 45 cm TL were males. Randall reported food of 59 specimens 15 to 57 cm SL were purely fishes of a variety of species.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMycteroperca tigrisFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length101Common length40.0Depth range10–40 m (33–131 ft)EnvironmentMarine; reef-associated; depth range 10 - 40 mClimateSubtropicalDistributionWestern Atlantic: southern Florida (USA) and the Gulf of Mexico to Brazil. It was suggested that Mycteroperca tigris was a transient species in the northwestern Gulf of Mexico, but has recently become abundant on the Flower Garden Banks off Texas.Conservation status (IUCN)Least Concern (LC), IUCN Grouper and Wrasse Specialist GroupThreat to humansReports of ciguatera poisoningUsesFisheries: commercial; aquarium: public aquariumsResilienceLow, minimum population doubling time 4.5 - 14 years (K=0.11; tm=6.5-9.5) More basslets, cardinalfish & hawkfishBanggai cardinal fishPterapogon kauderniYellowfin grouperMycteroperca venenosaRosy bassletLipogramma roseaRoyal bassletLipogramma regiaBicolor bassletLipogramma klayiBanded bassletLipogramma evidesSee 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