HomeFish encyclopediaRay-finned fishesCusk eelsViviparous brotulasFreetail brotula Freetail brotula (Bidenichthys capensis) Scientific name: Bidenichthys capensis Barnard, 1934 The Freetail brotula (Bidenichthys capensis) is a marine fish of the family Bythitidae. Native range: Southeast Atlantic, known only from South Africa. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 75; Anal spines: 0; Anal soft rays: 38. Yellowish in color.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBidenichthys capensisFamilyBythitidae (Viviparous brotulas)OrderOphidiiformes (Cusk eels)ClassActinopterygii (Ray-finned fishes)Maximum length9.0EnvironmentMarine; demersalClimateSubtropicalDistributionSoutheast Atlantic: known only from South Africa.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceLow, minimum population doubling time 4.5 - 14 years (Assuming Fec SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026