HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsStriped-fin grouper Striped-fin grouper (Epinephelus posteli) Scientific name: Epinephelus posteli Fourmanoir & Crosnier, 1964 The Striped-fin grouper (Epinephelus posteli) is a marine fish of the family Serranidae. Native range: Western Indian Ocean, known only from Madagascar, Natal in South Africa, and southern Mozambique. BiologyDorsal spines (total): 11; Dorsal soft rays (total): 15-16; Anal spines: 3; Anal soft rays: 9Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEpinephelus posteliFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length100.0Depth range20–50 m (66–164 ft)EnvironmentMarine; reef-associated; depth range 20 - 50 mClimateSubtropicalDistributionWestern Indian Ocean: known only from Madagascar, Natal in South Africa, and southern Mozambique.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: subsistence fisheries; gamefish: yesResilienceVery Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026