HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsBlackbrow bleak Blackbrow bleak (Acanthalburnus microlepis) Scientific name: Acanthalburnus microlepis De Filippi, 1863 The Blackbrow bleak (Acanthalburnus microlepis) is a freshwater fish of the family Cyprinidae. In the aquarium it needs water at 10–20°C (50–68°F). Blackbrow bleak care at a glanceTemperature10–20°C (50–68°F) Species factsScientific nameAcanthalburnus microlepisFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length25.0EnvironmentFreshwater; benthopelagicClimateTemperateDistributionFormer USSR: Endemic to the Kura-Aras basin. Probably also in Sefid of Iran. Distributed in the upper and middle reaches of Kura with tributaries downstream to Mingetchiaur and of Aras downstream to Karadonly (Azerbaijan).Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Fec = 2,830-9,705) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026