HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBarbeled dragonfishesPacific blackdragon Pacific blackdragon (Idiacanthus antrostomus) Scientific name: Idiacanthus antrostomus Gilbert, 1890 The Pacific blackdragon (Idiacanthus antrostomus) is a marine fish of the family Stomiidae. Native range: Eastern Pacific, throughout most of the tropic and temperate waters, both north and south of the equator. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 54-66; Anal spines: 0; Anal soft rays: 28 - 43; Vertebrae: 81 - 85Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameIdiacanthus antrostomusFamilyStomiidae (Barbeled dragonfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length7.6Depth range0–1103 m (0–3619 ft)EnvironmentMarine; bathypelagic; depth range 0 - 1103 mClimateDeep-waterDistributionEastern Pacific: throughout most of the tropic and temperate waters, both north and south of the equator.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, 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