HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsLongtail bass Longtail bass (Hemanthias leptus) Scientific name: Hemanthias leptus Ginsburg, 1952 The Longtail bass (Hemanthias leptus) is a marine fish of the family Serranidae. BiologyDorsal spines (total): 10; Dorsal soft rays (total): 14; Anal spines: 3; Anal soft rays: 8. Pelvic fin long, its tip extending posteriorly beyond origin of anal fin; caudal fin deeply emarginate, upper lobe projecting posteriorly; body silver with a pink cast dorsally, silvery-white ventrally; a yellow line extending from snout through lower edge of eye to posterior margin of opercle; pectoral fin pink, other fins yellow.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHemanthias leptusFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length50.0Common length35.0Depth range60–300 m (197–984 ft)EnvironmentMarine; demersal; depth range 60 - 300 mClimateTropicalDistributionWestern Atlantic: South Carolina, USA and northern Gulf of Mexico to the Caribbean Sea; probably more widespread. Reported from the northern coast of South America.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: 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