HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBarbeled dragonfishesThreadfin dragonfish Threadfin dragonfish (Echiostoma barbatum) Scientific name: Echiostoma barbatum Lowe, 1843 The Threadfin dragonfish (Echiostoma barbatum) is a marine fish of the family Stomiidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 12-15; Anal spines: 0; Anal soft rays: 14 - 18Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEchiostoma barbatumFamilyStomiidae (Barbeled dragonfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length36.8Depth range30–4200 m (98–13780 ft)EnvironmentMarine; bathypelagic; depth range 30 - 4200 mClimateDeep-waterDistributionEastern Atlantic: Portugal to South Africa except the Gulf of Guinea. Western Atlantic: USA south to Argentina, including the Gulf of Mexico and the Caribbean Sea. Northwest Atlantic: Canada. Also Indian and Pacific oceans.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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