Original description as Poecilia butleri:
- Jordan, David Starr. 1888. "List of fishes collected by Alphonse Ferrer about Mazatlan, with descriptions of two new species - Heros beani and Poecilia butleri". Proceeding of the United States National Museum. 11(719):332-333 (ffm00330)
- Platypoecilus nelsoni Meek, 1904, with type locality at Papayo, Río Balsas basin, Guerrero, Mexico. Determiner: Parenti et al., 1999
Conservation: Poecilia butleri is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2018).