HomeFish encyclopediaRay-finned fishesGrinnersAulopusJapanese thread-sail fish Japanese thread-sail fish (Hime japonica) Scientific name: Hime japonica G?nther, 1877 The Japanese thread-sail fish (Hime japonica) is a marine fish of the family Aulopidae. Native range: Pacific Ocean, Japan, Philippines, and the Hawaiian Islands. Reported more recently from Taiwan and the Chesterfield Islands. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 16-17; Anal spines: 0; Anal soft rays: 9 - 10; Vertebrae: 42 - 43. Diameter of orbit equal to or greater than length of snout. Fourth dorsal fin ray longest, but not elongated into a filament. In males, anterior part of dorsal fin with a large reddish blotch and a yellowish band on anal fin.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHime japonicaFamilyAulopidae (Aulopus)OrderAulopiformes (Grinners)ClassActinopterygii (Ray-finned fishes)Maximum length22.3Common length15.0Depth range85–510 m (279–1673 ft)EnvironmentMarine; demersal; depth range 85 - 510 mClimateTropicalDistributionPacific Ocean: Japan, Philippines, and the Hawaiian Islands. Reported more recently from Taiwan and the Chesterfield Islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=1-3) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026