HomeFreshwater aquarium fishTetras & characinsMoenkhausia collettii Moenkhausia collettii Scientific name: Moenkhausia collettii Steindachner, 1882 Moenkhausia collettii is a freshwater fish of the family Characidae that grows to about 5 cm (2 in). It is peaceful, suits community aquariums and needs water at 23–27°C (73–81°F) and a pH of 5.6–7.2. Native range: South America, Amazon basin from Peru to the Guianas. Moenkhausia collettii care at a glanceTemperamentPeacefulCommunity tankGoodAdult size5 cm (2 in)Temperature23–27°C (73–81°F)pH5.6–7.2Hardness5–15 dGH (89–268 ppm)DietOmnivore. Accepts live foods. BiologyOccurs in slow flowing areas of the main stream, over muddy bottoms. Considered gregarious and peaceful. Its reproduction in captivity would have been carried out for the first time in 1988.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMoenkhausia collettiiFamilyCharacidae (Characins)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length5.0EnvironmentFreshwater;; pH range: 5.6 - 7.2; dH range: ? - 15 benthopelagicClimateTropicalDistributionSouth America: Amazon basin from Peru to the Guianas.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More tetras & characinsIguanodectes spilurusHemigrammus ulreyiHemigrammus rodwayiRuby tetraAxelrodia rieseiAnostomus ternetziCachamaColossoma macropomumSee all tetras & characins SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0. Aquarium care parameters compiled, checked and converted to metric and imperial units by Guppies.za.net.Last updated 28 September 2026