HomeFish encyclopediaRay-finned fishesPerch-like fishEelpoutsBlackmouth eelpout Blackmouth eelpout (Lycodapus fierasfer) Scientific name: Lycodapus fierasfer Gilbert, 1890 The Blackmouth eelpout (Lycodapus fierasfer) is a marine fish of the family Zoarcidae. Native range: Eastern Pacific, Bering Sea to Peru. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 82-85; Anal spines: 0; Anal soft rays: 70 - 74. Dorsal and anal fins confluent with caudal. Pearly background, sparsely speckled with fine black dots; black on jaws, mouth and gill cavities, and peritoneum.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLycodapus fierasferFamilyZoarcidae (Eelpouts)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length15.0Depth range50–2212 m (164–7257 ft)EnvironmentMarine; bathypelagic; depth range 50 - 2212 mClimateDeep-waterDistributionEastern Pacific: Bering Sea to Peru.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026