HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBarbeled dragonfishesLong-threaded dragon fish Long-threaded dragon fish (Leptostomias macronema) Scientific name: Leptostomias macronema Gilbert, 1905 The Long-threaded dragon fish (Leptostomias macronema) is a marine fish of the family Stomiidae. Native range: Eastern Central Pacific, Hawaii. Species factsScientific nameLeptostomias macronemaFamilyStomiidae (Barbeled dragonfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Depth range100–825 m (328–2707 ft)EnvironmentMarine; pelagic-oceanic; depth range 100 - 825 mClimateTropicalDistributionEastern Central Pacific: Hawaii.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