HomeFish encyclopediaRay-finned fishesLanternfishesLanternfishesSlimtail lampfish Slimtail lampfish (Lampanyctus parvicauda) Scientific name: Lampanyctus parvicauda Parr, 1931 The Slimtail lampfish (Lampanyctus parvicauda) is a marine fish of the family Myctophidae. Native range: Eastern Central Pacific, from about 20?N to 15?S, and the Gulf of California. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 13-15; Anal spines: 0; Anal soft rays: 17 - 20; Vertebrae: 35 - 38Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLampanyctus parvicaudaFamilyMyctophidae (Lanternfishes)OrderMyctophiformes (Lanternfishes)ClassActinopterygii (Ray-finned fishes)Depth range100–500 m (328–1640 ft)EnvironmentMarine; bathypelagic; depth range 100 - 500 mClimateDeep-waterDistributionEastern Central Pacific: from about 20?N to 15?S, and the Gulf of California.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