HomeFish encyclopediaRay-finned fishesSmeltsSlickheadsBluntsnout slickhead Bluntsnout slickhead (Rouleina squamilatera) Scientific name: Rouleina squamilatera Alcock, 1898 The Bluntsnout slickhead (Rouleina squamilatera) is a marine fish of the family Alepocephalidae. Native range: Indo-West Pacific, Madagascar, Sea of Okhotsk, and the Great Australian Bight; New Zealand. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 18-21; Anal spines: 0; Anal soft rays: 16 - 19Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameRouleina squamilateraFamilyAlepocephalidae (Slickheads)OrderOsmeriformes (Smelts)ClassActinopterygii (Ray-finned fishes)Maximum length38.0Depth range677–1150 m (2221–3773 ft)EnvironmentMarine; bathypelagic; depth range 677 - 1150 mClimateDeep-waterDistributionIndo-West Pacific: Madagascar, Sea of Okhotsk, and the Great Australian Bight; New Zealand.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