HomeFish encyclopediaRay-finned fishesSmeltsLeptochilichthyidsVaillant's smooth-head Vaillant's smooth-head (Leptochilichthys pinguis) Scientific name: Leptochilichthys pinguis Vaillant, 1886 The Vaillant's smooth-head (Leptochilichthys pinguis) is a marine fish of the family Leptochilichthyidae. Native range: Eastern Atlantic, off South Africa and off Morocco. Western Indian Ocean: off South Africa and Saya-de-Malha Bank. Elsewhere, western tropical Pacific. BiologyDorsal spines: 0; Dorsal soft rays: 16-21; Anal spines: 0; Anal soft rays: 14 - 18. Pelvic fins with a short splint bone.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLeptochilichthys pinguisFamilyLeptochilichthyidae (Leptochilichthyids)OrderOsmeriformes (Smelts)ClassActinopterygii (Ray-finned fishes)Maximum length24.3Depth range800–1400 m (2625–4593 ft)EnvironmentMarine; bathypelagic; depth range 800 - 1400 mClimateDeep-waterDistributionEastern Atlantic: off South Africa and off Morocco. Western Indian Ocean: off South Africa and Saya-de-Malha Bank. Elsewhere, western tropical Pacific.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026