HomeFreshwater aquarium fishGuppies & livebearersYellow swordtail Yellow swordtail (Xiphophorus clemenciae) Scientific name: Xiphophorus clemenciae ?lvarez, 1959 The Yellow swordtail (Xiphophorus clemenciae) is a freshwater fish of the family Poeciliidae. In the aquarium it needs water at 22–26°C (72–79°F). Native range: North America, Coatzacoalcos and Papaloapan ecoregions in Mexico. Yellow swordtail care at a glanceTemperature22–26°C (72–79°F) BiologyCommon in small streams and brooks with light current and rockpools in areas with extensive limestone outcroppings; relatively uncommon in fast-flowing streams.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameXiphophorus clemenciaeFamilyPoeciliidae (Poeciliids)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length5.1EnvironmentFreshwater;; pH range: 7.2 - 8.0; dH range: 3 - 10 benthopelagic; non-migratoryClimateTropicalDistributionNorth America: Coatzacoalcos and Papaloapan ecoregions in Mexico.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More guppies & livebearersButterfly splitfinAmeca splendensBluetail goodeaAtaeniobius toweriBold characodonCharacodon audaxPoecilia wingeiMollyPoecilia sphenopsSouthern platyfishXiphophorus maculatusSee all guppies & livebearers SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026