HomeFish encyclopediaRay-finned fishesPerch-like fishCutlassfishesPacific black scabbardfish Pacific black scabbardfish (Aphanopus arigato) Scientific name: Aphanopus arigato Parin, 1994 The Pacific black scabbardfish (Aphanopus arigato) is a marine fish of the family Trichiuridae. Native range: Western Pacific, Japan, Kuril Islands, NW Ridge (Kinmei Seamount). Eastern Pacific: Canada and the USA. BiologyDorsal spines (total): 39 - 43; Dorsal soft rays (total): 54-58; Anal spines: 2; Anal soft rays: 47 - 50; Vertebrae: 103 - 105. Distance from snout to anus 1.8-1.9 times in SL; eye diameter 5.6-6.5; upper jaw 2.15-2.30 times in HL.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAphanopus arigatoFamilyTrichiuridae (Cutlassfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length72.0Depth range0–1350 m (0–4429 ft)EnvironmentMarine; benthopelagic; depth range 0 - 1350 mClimateDeep-waterDistributionWestern Pacific: Japan, Kuril Islands, NW Ridge (Kinmei Seamount). Eastern Pacific: Canada and the USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 14 years (Assuming tmax>10) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026