HomeFish encyclopediaSharks and RaysBramble, Sleeper and Dogfish sharksLantern sharksBlurred smooth lantern shark Blurred smooth lantern shark (Etmopterus bigelowi) Scientific name: Etmopterus bigelowi Shirai & Tachikawa, 1993 The Blurred smooth lantern shark (Etmopterus bigelowi) is a marine fish of the family Etmopteridae. Native range: Atlantic, Indian Ocean and Western Pacific. In the western Atlantic from the Gulf of Mexico to Argentina. BiologyOvoviviparous. Feeds on small sharks, squids and myctophids.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEtmopterus bigelowiFamilyEtmopteridae (Lantern sharks)OrderSqualiformes (Bramble, Sleeper and Dogfish sharks)ClassElasmobranchii (Sharks and Rays)Maximum length67.0Depth range163–1000 m (535–3281 ft)EnvironmentMarine; benthopelagic; depth range 163 - 1000 mClimateDeep-waterDistributionAtlantic, Indian Ocean and Western Pacific. In the western Atlantic from the Gulf of Mexico to Argentina.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessResilienceVery Low, minimum population doubling time more than 14 years (Fec assumed to be SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026