HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesMarine hatchetfishesGilbert & Cramer's bristle-mouth fish Gilbert & Cramer's bristle-mouth fish (Argyripnus ephippiatus) Scientific name: Argyripnus ephippiatus Gilbert & Cramer, 1897 The Gilbert & Cramer's bristle-mouth fish (Argyripnus ephippiatus) is a marine fish of the family Sternoptychidae. Native range: Pacific Ocean. Species factsScientific nameArgyripnus ephippiatusFamilySternoptychidae (Marine hatchetfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length8.9Depth range325–518 m (1066–1699 ft)EnvironmentMarine; benthopelagic; depth range 325 - 518 mClimateSubtropicalDistributionPacific Ocean.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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