Original description as Gambusia infans:
- Woolman, Albert J.. 1894. "Report on a collection of fishes from the rivers of central and northern Mexico". Bulletin of the U.S. Fish Commission. v. 14, pp. 55-66 (ffm04517)
- Poeciliopsis porosus de Buen, 1943, with type locality at Lago de Camécuaro, Michoacán State, Mexico. Determiner: Rosen et al., 1963
Conservation: Poeciliopsis infans is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.