HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBarbeled dragonfishesDeepsea dragonfish Deepsea dragonfish (Eustomias trewavasae) Scientific name: Eustomias trewavasae Norman, 1930 The Deepsea dragonfish (Eustomias trewavasae) is a marine fish of the family Stomiidae. Native range: Circumglobal. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 20-26; Anal spines: 0; Anal soft rays: 31 - 37Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEustomias trewavasaeFamilyStomiidae (Barbeled dragonfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length26.0Depth range0–1000 m (0–3281 ft)EnvironmentMarine; bathypelagic; depth range 0 - 1000 mClimateDeep-waterDistributionCircumglobal.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