HomeFish encyclopediaRay-finned fishesLanternfishesLanternfishesHeadlight fish Headlight fish (Diaphus effulgens) Scientific name: Diaphus effulgens Goode & Bean, 1896 The Headlight fish (Diaphus effulgens) is a marine fish of the family Myctophidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 15-17; Anal spines: 0; Anal soft rays: 15 - 16Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameDiaphus effulgensFamilyMyctophidae (Lanternfishes)OrderMyctophiformes (Lanternfishes)ClassActinopterygii (Ray-finned fishes)Maximum length15.0Depth range0–6000 m (0–19685 ft)EnvironmentMarine; bathypelagic; non-migratory; depth range 0 - 6000 mClimateDeep-waterDistributionEastern Atlantic: from 40? to 17?N, from 19?S to Subtropical Convergence zone. Western Atlantic: USA to about 20?N, from Brazil to Subtropical Convergence. Indian Ocean: west of 70?E between 5?S-38?S. Western Pacific: between 0? and 29?N, Southeast Asian seas, New South Wales, Australia and New Zealand. Central and Southeast Pacific.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