HomeFreshwater aquarium fishTetras & characinsSheep-pacu Sheep-pacu (Acnodon normani) Scientific name: Acnodon normani Gosline, 1951 The Sheep-pacu (Acnodon normani) is a freshwater fish of the family Characidae. In the aquarium it needs water at 22–28°C (72–82°F). Native range: South America, Amazon, Xingu and Tocantins River basins in Brazil. Sheep-pacu care at a glanceTemperature22–28°C (72–82°F) Species factsScientific nameAcnodon normaniFamilyCharacidae (Characins)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length13.5EnvironmentFreshwater;; pH range: 5.8 - 7.2; dH range: ? - 18 benthopelagicClimateTropicalDistributionSouth America: Amazon, Xingu and Tocantins River basins in Brazil.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More tetras & characinsMoenkhausia collettiiIguanodectes spilurusHemigrammus ulreyiHemigrammus rodwayiRuby tetraAxelrodia rieseiAnostomus ternetziSee all tetras & characins SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026