HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesMarine hatchetfishesSladen's hatchet fish Sladen's hatchet fish (Argyropelecus sladeni) Scientific name: Argyropelecus sladeni Regan, 1908 The Sladen's hatchet fish (Argyropelecus sladeni) is a marine fish of the family Sternoptychidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 9; Anal spines: 0; Anal soft rays: 11 - 12; Vertebrae: 35 - 38. Branchiostegal rays: 10.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameArgyropelecus sladeniFamilySternoptychidae (Marine hatchetfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length7.0Depth range0–2926 m (0–9600 ft)EnvironmentMarine; bathypelagic; depth range 0 - 2926 mClimateDeep-waterDistributionAtlantic, Indian and Pacific: in tropical waters. Eastern Atlantic: Cape Blanc, Mauritania to Namibia. Eastern Pacific: Oregon to southern California in the USA. Southeast Pacific: Chile. South China Sea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026