Range Extent CommentsNative on Atlantic slope from Rio Nautla, Veracruz, Mexico, to northwestern Honduras. Established in Trudeau and Beaverhead Rock ponds, Madison County, Montana; Warms Springs Creek, Clark County, Idaho; Kelly Warm Spring, Grand Teton National Park, Teton County, Wyoming (Courtenay et al. 1987); in canals near Tampa, Hillsborough county, Florida; and (as a hybrid with southern platyfish) Indian spring, Clark County, Nevada; abundant at some localities (Page and Burr 1991). Has been collected, but is not known to be presently established, in Alberta, Arizona, and California (Robins et al. 1991).