HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBristlemouthsKobayashi's bristlemouth Kobayashi's bristlemouth (Cyclothone kobayashii) Scientific name: Cyclothone kobayashii Miya, 1994 The Kobayashi's bristlemouth (Cyclothone kobayashii) is a marine fish of the family Gonostomatidae. Native range: Southern Ocean, circumglobal. Species factsScientific nameCyclothone kobayashiiFamilyGonostomatidae (Bristlemouths)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length4.2Depth range0–1058 m (0–3471 ft)EnvironmentMarine; bathydemersal; depth range 0 - 1058 mClimateDeep-waterDistributionSouthern Ocean: circumglobal.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