HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesMarine hatchetfishesBrock's bristle-mouth fish Brock's bristle-mouth fish (Argyripnus brocki) Scientific name: Argyripnus brocki Struhsaker, 1973 The Brock's bristle-mouth fish (Argyripnus brocki) is a marine fish of the family Sternoptychidae. Native range: Eastern Central Pacific, Hawaiian Islands. Species factsScientific nameArgyripnus brockiFamilySternoptychidae (Marine hatchetfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length8.9Depth range180–380 m (591–1247 ft)EnvironmentMarine; benthopelagic; depth range 180 - 380 mClimateTropicalDistributionEastern Central Pacific: Hawaiian Islands.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