HomeFish encyclopediaRay-finned fishesLanternfishesLanternfishesCrown lanternfish Crown lanternfish (Diaphus diadematus) Scientific name: Diaphus diadematus T?ning, 1932 The Crown lanternfish (Diaphus diadematus) is a marine fish of the family Myctophidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 13-14; Anal spines: 0; Anal soft rays: 13 - 15Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameDiaphus diadematusFamilyMyctophidae (Lanternfishes)OrderMyctophiformes (Lanternfishes)ClassActinopterygii (Ray-finned fishes)Maximum length4.2Depth range350 m (1148 ft)EnvironmentMarine; pelagic-oceanic; oceanodromous; depth range ? - 350 mClimateDeep-waterDistributionEastern Atlantic: from about 18?S to 23?S, but west of the thermal front between upwelled Benguela Water and South Atlantic Central Water. Indian Ocean: disjunct distribution, one population off Sumatra, the other in Mozambique Channel and in the Agulhas Current. Western Pacific: Southeast Asian seas to 20?N. Recorded from Australia.Conservation status (IUCN)Least Concern (LC)Threat 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