HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesLightfishesSlender lightfish Slender lightfish (Vinciguerria attenuata) Scientific name: Vinciguerria attenuata Cocco, 1838 The Slender lightfish (Vinciguerria attenuata) is a marine fish of the family Phosichthyidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 13-15; Anal spines: 0; Anal soft rays: 13 - 16. Dark dorsum, silvery flanks; lower jaw symphysis, premaxilla and fin rays lacking pigment streaks.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameVinciguerria attenuataFamilyPhosichthyidae (Lightfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length4.5Depth range100–2000 m (328–6562 ft)EnvironmentMarine; bathypelagic; depth range 100 - 2000 mClimateSubtropicalDistributionWestern Atlantic. Eastern Atlantic: Portugal south to Congo and South Africa, including the Mediterranean. Northwest Atlantic: Canada. Indian Ocean: off Inhaca Island, Mozambique. Southeast Pacific: Chile. South China SeaConservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (tmax=1) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026