HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsConvict grouper Convict grouper (Hyporthodus septemfasciatus) Scientific name: Hyporthodus septemfasciatus Thunberg, 1793 The Convict grouper (Hyporthodus septemfasciatus) is a marine fish of the family Serranidae. BiologyOccurs near shore, including semi-enclosed sea areas in rocky reefs in shallow waters. Commercially cultured in Japan.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHyporthodus septemfasciatusFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length155Depth range5–30 m (16–98 ft)EnvironmentMarine; reef-associated; non-migratory; depth range 5 - 30 mClimateTropicalDistributionNorthwest Pacific: known with certainty only from Japan, Korea, and China. Reports from other areas appear to be based on misidentifications of Epinephelus octofasciatus.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: minor commercial; aquaculture: commercialResilienceVery 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