HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsSmallmouth yellowfish Smallmouth yellowfish (Labeobarbus aeneus) Scientific name: Labeobarbus aeneus Burchell, 1822 The Smallmouth yellowfish (Labeobarbus aeneus) is a freshwater fish of the family Cyprinidae. BiologyDorsal spines (total): 4; Dorsal soft rays (total): 7-9; Anal spines: 3; Anal soft rays: 5Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLabeobarbus aeneusFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length50.0EnvironmentFreshwater; benthopelagic; potamodromousClimateSubtropicalDistributionAfrica: originally endemic to the Orange-Vaal River system, South Africa. Has been introduced into the Gouritz River, South Cape and the Olifants River, Limpopo River system where it is now established.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: commercial; gamefish: yesResilienceLow, minimum population doubling time 4.5 - 14 years (K=0.13-0.27; tmax=12) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026