HomeFish encyclopediaRay-finned fishesSawbelliesSlimeheadsWest Pacific luminous roughy West Pacific luminous roughy (Aulotrachichthys prosthemius) Scientific name: Aulotrachichthys prosthemius Jordan & Fowler, 1902 The West Pacific luminous roughy (Aulotrachichthys prosthemius) is a marine fish of the family Trachichthyidae. Native range: North Pacific, southern Japan and Hawaii. BiologyBenthopelagic or near crevices and caves.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAulotrachichthys prosthemiusFamilyTrachichthyidae (Slimeheads)OrderBeryciformes (Sawbellies)ClassActinopterygii (Ray-finned fishes)Maximum length6.1Depth range90–198 m (295–650 ft)EnvironmentMarine; bathypelagic; depth range 90 - 198 mClimateDeep-waterDistributionNorth Pacific: southern Japan and Hawaii.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026