HomeFreshwater aquarium fishOther freshwater fishDarter characine Darter characine (Apareiodon affinis) Scientific name: Apareiodon affinis Steindachner, 1879 The Darter characine (Apareiodon affinis) is a freshwater fish of the family Parodontidae. In the aquarium it needs water at 22–26°C (72–79°F). Native range: South America, La Plata River basin. Darter characine care at a glanceTemperature22–26°C (72–79°F) Species factsScientific nameApareiodon affinisFamilyParodontidae (Scrapetooths)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length14.3EnvironmentFreshwater;; pH range: 6.0 - 7.2; dH range: ? - 15 benthopelagicClimateSubtropicalDistributionSouth America: La Plata River basin.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More other freshwater fishShort-tailed pipefishMicrophis brachyurus brachyurusFinescale tigerfishDatnioides microlepisPumpkinseedLepomis gibbosusLined soleAchirus lineatusFreshwater garfishXenentodon cancilaSouth American lungfishLepidosiren paradoxaSee all other freshwater fish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026