HomeFish encyclopediaRay-finned fishesSmeltsSlickheadsDeepscale slickhead Deepscale slickhead (Bathytroctes squamosus) Scientific name: Bathytroctes squamosus Alcock, 1890 The Deepscale slickhead (Bathytroctes squamosus) is a marine fish of the family Alepocephalidae. Native range: Western Indian Ocean, south of Madagascar and off Mozambique Ridge. Eastern Indian Ocean: Western Australia. Northwest Atlantic. Western Central Pacific. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 14-17; Anal spines: 0; Anal soft rays: 15 - 17Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBathytroctes squamosusFamilyAlepocephalidae (Slickheads)OrderOsmeriformes (Smelts)ClassActinopterygii (Ray-finned fishes)Maximum length30.6Depth range1000–2060 m (3281–6759 ft)EnvironmentMarine; bathypelagic; depth range 1000 - 2060 m, usually 1000 - 2000 mClimateDeep-waterDistributionWestern Indian Ocean: south of Madagascar and off Mozambique Ridge. Eastern Indian Ocean: Western Australia. Northwest Atlantic. Western Central Pacific.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, 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