HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPoeciliidsMixe swordtail Mixe swordtail (Xiphophorus mixei) Scientific name: Xiphophorus mixei Kallman, Walter, Morizot & Kazianis, 2004 The Mixe swordtail (Xiphophorus mixei) is a freshwater fish of the family Poeciliidae. Native range: North America, Mexico. BiologyA small to medium-sized swordtail species characterized by a short sword (index 0.06); 1 or 2 orange lateral stripes and black spots at the base of the caudal fin.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameXiphophorus mixeiFamilyPoeciliidae (Poeciliids)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length3.9EnvironmentFreshwater; pelagicClimateTropicalDistributionNorth America: Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026