HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsButterfly barb Butterfly barb (Barbus hulstaerti) Scientific name: Barbus hulstaerti Poll, 1945 The Butterfly barb (Barbus hulstaerti) is a freshwater fish of the family Cyprinidae. In the aquarium it needs water at 22–24°C (72–75°F). Butterfly barb care at a glanceTemperature22–24°C (72–75°F) Species factsScientific nameBarbus hulstaertiFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length3.5EnvironmentFreshwater;; pH range: 6.0 - 6.5; dH range: 5 - ? benthopelagicClimateTropicalDistributionAfrica: Momboyo, Tshuapa and Pimo (Lomami tributary) (middle Congo River basin) in Democratic Republic of the Congo. Questionable reports from Angola and upper Ogoou? in Gabon.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesAquarium: commercialResilienceHigh, 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