HomeFish encyclopediaRay-finned fishesLanternfishesLanternfishesWatases lanternfish Watases lanternfish (Diaphus watasei) Scientific name: Diaphus watasei Jordan & Starks, 1904 The Watases lanternfish (Diaphus watasei) is a marine fish of the family Myctophidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 14-15; Anal spines: 0; Anal soft rays: 14 - 15Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameDiaphus wataseiFamilyMyctophidae (Lanternfishes)OrderMyctophiformes (Lanternfishes)ClassActinopterygii (Ray-finned fishes)Maximum length17.0Depth range100–550 m (328–1804 ft)EnvironmentMarine; benthopelagic; depth range 100 - 550 mClimateSubtropicalDistributionEastern Atlantic: over continental shelf and slope southwards to about 30?S. Indo-West Pacific: east African continental shelf south of about 2?S, west coast of Madagascar and off Japan. Also recorded from Indonesia and northwestern Australia. South China Sea and East China Sea.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