HomeFish encyclopediaRay-finned fishesSmeltsSlickheadsKoefoed's smooth-head Koefoed's smooth-head (Bathytroctes macrolepis) Scientific name: Bathytroctes macrolepis G?nther, 1887 The Koefoed's smooth-head (Bathytroctes macrolepis) is a marine fish of the family Alepocephalidae. Native range: Atlantic, Indian and Pacific. Species factsScientific nameBathytroctes macrolepisFamilyAlepocephalidae (Slickheads)OrderOsmeriformes (Smelts)ClassActinopterygii (Ray-finned fishes)Maximum length40.0Depth range2500–5850 m (8202–19193 ft)EnvironmentMarine; bathypelagic; depth range 2500 - 5850 m, usually 2800 - 3300 mClimateDeep-waterDistributionAtlantic, Indian and Pacific.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 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