HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsSplittail bass Splittail bass (Hemanthias peruanus) Scientific name: Hemanthias peruanus Steindachner, 1875 The Splittail bass (Hemanthias peruanus) is a marine fish of the family Serranidae. Native range: Eastern Pacific, Baja California, Mexico to northern Chile. BiologyThird dorsal spine longest, with well-produced filament; middle rays of upper and lower lobes of caudal fin longest.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHemanthias peruanusFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length45.0Depth range20–120 m (66–394 ft)EnvironmentMarine; pelagic-neritic; depth range 20 - 120 mClimateTropicalDistributionEastern Pacific: Baja California, Mexico to northern Chile.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: minor commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 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