HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBarbeled dragonfishesThreelight dragonfish Threelight dragonfish (Trigonolampa miriceps) Scientific name: Trigonolampa miriceps Regan & Trewavas, 1930 The Threelight dragonfish (Trigonolampa miriceps) is a marine fish of the family Stomiidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 17-20; Anal spines: 0; Anal soft rays: 16 - 19. Body slender, moderately compressed. Serial photophores small, deeply embedded in skin. Minute light organs scattered over skin of body.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTrigonolampa miricepsFamilyStomiidae (Barbeled dragonfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length32.0Depth range1860 m (6102 ft)EnvironmentMarine; bathypelagic; depth range ? - 1860 mClimateDeep-waterDistributionEastern Atlantic: 65?N (between Greenland to Iceland) to about 44?N; two records at 26?N 16?W and 11?N 24?W. Western Atlantic: between 42?N and 37?N. Northwest Atlantic: Canada. Circumglobal in the subtropical convergence south of 35?S.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