HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBristlemouthsShowy bristlemouth Showy bristlemouth (Cyclothone signata) Scientific name: Cyclothone signata Garman, 1899 The Showy bristlemouth (Cyclothone signata) is a marine fish of the family Gonostomatidae. Native range: Eastern Pacific, Bering Sea, British Columbia (Canada) and Gulf of Panama. Reported from Chile. Indian Ocean. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 13-14; Anal spines: 0; Anal soft rays: 18 - 20; Vertebrae: 30 - 32. Branchiostegal rays: 12-14.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCyclothone signataFamilyGonostomatidae (Bristlemouths)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length3.0Depth range16–4938 m (52–16201 ft)EnvironmentMarine; bathypelagic; depth range 16 - 4938 m, usually 100 - 800 mClimateDeep-waterDistributionEastern Pacific: Bering Sea, British Columbia (Canada) and Gulf of Panama. Reported from Chile. Indian 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