HomeFish encyclopediaRay-finned fishesLanternfishesLanternfishesSlendertail lanternfish Slendertail lanternfish (Gonichthys tenuiculus) Scientific name: Gonichthys tenuiculus Garman, 1899 The Slendertail lanternfish (Gonichthys tenuiculus) is a marine fish of the family Myctophidae. Native range: Eastern Pacific, region between 32?N and 22?S, including Chile. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 10-12; Anal spines: 0; Anal soft rays: 17 - 20; Vertebrae: 38 - 41. Branchiostegal rays: 8-9.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGonichthys tenuiculusFamilyMyctophidae (Lanternfishes)OrderMyctophiformes (Lanternfishes)ClassActinopterygii (Ray-finned fishes)Maximum length5.0EnvironmentMarine; bathypelagicClimateDeep-waterDistributionEastern Pacific: region between 32?N and 22?S, including Chile.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