HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBristlemouthsBristlemouth Bristlemouth (Cyclothone alba) Scientific name: Cyclothone alba Brauer, 1906 The Bristlemouth (Cyclothone alba) is a marine fish of the family Gonostomatidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 12-15; Anal spines: 0; Anal soft rays: 17 - 20Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCyclothone albaFamilyGonostomatidae (Bristlemouths)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length2.9Depth range25–4938 m (82–16201 ft)EnvironmentMarine; bathypelagic; depth range 25 - 4938 m, usually 300 - 800 mClimateDeep-waterDistributionCircumglobal. Atlantic Ocean: scattered records from Iceland to the tropical region; off Saldanha, South Africa. Western Pacific: Japan, Papua New Guinea, Australia. Southeast Pacific: Peru. South China SeaConservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceHigh, 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