HomeFish encyclopediaRay-finned fishesLanternfishesLanternfishesCalifornia flashlightfish California flashlightfish (Protomyctophum crockeri) Scientific name: Protomyctophum crockeri Bolin, 1939 The California flashlightfish (Protomyctophum crockeri) is a marine fish of the family Myctophidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 11-13; Anal spines: 0; Anal soft rays: 19 - 24; Vertebrae: 36 - 38. Branchiostegal rays: 8-9.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameProtomyctophum crockeriFamilyMyctophidae (Lanternfishes)OrderMyctophiformes (Lanternfishes)ClassActinopterygii (Ray-finned fishes)Maximum length3.7Depth range100–500 m (328–1640 ft)EnvironmentMarine; pelagic-oceanic; depth range 100 - 500 mClimateTemperateDistributionNorthwest Pacific: off T?hoku in Japan. Northeast Pacific: south of southern California to Washington. Also widespread in the transition region between the subarctic and central water masses of the North Pacific.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