HomeFreshwater aquarium fishTetras & characinsSwordtail characin Swordtail characin (Corynopoma riisei) Scientific name: Corynopoma riisei Gill, 1858 The Swordtail characin (Corynopoma riisei) 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, coastal rivers of Trinidad and northern Venezuela and from the Meta River basin. Swordtail characin care at a glanceTemperature22–28°C (72–82°F) Species factsScientific nameCorynopoma riiseiFamilyCharacidae (Characins)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length4.8EnvironmentFreshwater;; pH range: 6.0 - 7.8; dH range: ? - 25 pelagicClimateTropicalDistributionSouth America: coastal rivers of Trinidad and northern Venezuela and from the Meta River basin.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More tetras & characinsCochu's blue tetraBoehlkea fredcochuiRedflank bloodfinAphyocharax rathbuniDarter characinCharacidium fasciatumRummy-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