HomeFish encyclopediaRay-finned fishesSawbelliesSlimeheadsBrazilian luminous roughy Brazilian luminous roughy (Aulotrachichthys atlanticus) Scientific name: Aulotrachichthys atlanticus Menezes, 1971 The Brazilian luminous roughy (Aulotrachichthys atlanticus) is a marine fish of the family Trachichthyidae. Native range: Southwestern Atlantic, known from Brazil, Uruguay and Argentina. Species factsScientific nameAulotrachichthys atlanticusFamilyTrachichthyidae (Slimeheads)OrderBeryciformes (Sawbellies)ClassActinopterygii (Ray-finned fishes)Maximum length10.3Depth range115–210 m (377–689 ft)EnvironmentMarine; demersal; depth range 115 - 210 m, usually 152 - 159 mClimateTropicalDistributionSouthwestern Atlantic: known from Brazil, Uruguay and Argentina.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