HomeFish encyclopediaRay-finned fishesLanternfishesLanternfishesBigeye lanternfish Bigeye lanternfish (Protomyctophum thompsoni) Scientific name: Protomyctophum thompsoni Chapman, 1944 The Bigeye lanternfish (Protomyctophum thompsoni) is a marine fish of the family Myctophidae. Native range: North Pacific, Japan, the Kuril-Kamchatka Trench and the Bering Sea eastward to the Gulf of Alaska south to Baja California. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 11-13; Anal spines: 0; Anal soft rays: 21 - 25; Vertebrae: 37 - 39. Adipose fin moderate. Metallic blue dorsally, bright silvery ventrally. Branchiostegal rays: 8-9.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameProtomyctophum thompsoniFamilyMyctophidae (Lanternfishes)OrderMyctophiformes (Lanternfishes)ClassActinopterygii (Ray-finned fishes)Maximum length5.2Depth range0–1500 m (0–4921 ft)EnvironmentMarine; bathypelagic; depth range 0 - 1500 mClimateDeep-waterDistributionNorth Pacific: Japan, the Kuril-Kamchatka Trench and the Bering Sea eastward to the Gulf of Alaska south to Baja California.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