HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBarbeled dragonfishesLongbarb dragonfish Longbarb dragonfish (Flagellostomias boureei) Scientific name: Flagellostomias boureei Zugmayer, 1913 The Longbarb dragonfish (Flagellostomias boureei) is a marine fish of the family Stomiidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 14-17; Anal spines: 0; Anal soft rays: 21 - 26. Body compressed. Stem of barbel spotted with numerous patches of white luminous tissue.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameFlagellostomias boureeiFamilyStomiidae (Barbeled dragonfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length32.2Depth range0–3000 m (0–9843 ft)EnvironmentMarine; bathypelagic; depth range 0 - 3000 mClimateDeep-waterDistributionEastern Atlantic: Spain southward to South Africa. Western Atlantic: USA to the Gulf of Mexico (no records between 10?N to 20?S), and from southern Brazil to Argentina. Also found in the 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