Poeciliopsis is a genus of poeciliid fishes that primarily are native to Mexico and Central America. The only exceptions are P. turrubarensis where the range extends into Colombia, and P. occidentalis where the range extends into Arizona and New Mexico, and P. gracilis which has been accidentally introduced into fast flowing drainage ditches that flow into the north-eastern end of the Salton Sea in California.
Poeciliopsis turneri R. R. Miller, 1975 (Blackspotted livebearer)
Poeciliopsis turrubarensis (Meek, 1912)
Poeciliopsis viriosa R. R. Miller, 1960 (Chubby livebearer)
Hybrid species
Poeciliopsis monacha—occidentalis is a unisexual (all female) hybridogenic lineage. It is an ancient clonal lineage that appears to be more than 100,000 generations old. The maternal ancestor was P. monacha and the paternal ancestor was P. occidentalis.
