HomeFreshwater aquarium fishTetras & characinsFlametail tetra Flametail tetra (Aphyocharax erythrurus) Scientific name: Aphyocharax erythrurus Eigenmann, 1912 The Flametail tetra (Aphyocharax erythrurus) is a freshwater fish of the family Characidae. In the aquarium it needs water at 22–26°C (72–79°F). Native range: South America, Essequibo River basin in Guyana. Flametail tetra care at a glanceTemperature22–26°C (72–79°F) Species factsScientific nameAphyocharax erythrurusFamilyCharacidae (Characins)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length5.8EnvironmentFreshwater;; pH range: 6.0 - 7.5; dH range: 10 - 20 benthopelagicClimateTropicalDistributionSouth America: Essequibo River basin in Guyana.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More tetras & characinsDarter characinCharacidium fasciatumRedflank bloodfinAphyocharax rathbuniCochu's blue tetraBoehlkea fredcochuiRummy-nose tetraHemigrammus rhodostomusEmber tetraHyphessobrycon amandaeOrnate tetraHyphessobrycon bentosiSee 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