Original description as Gambusia krumholzi:
- Minckley, Wendell L. 1963. "A new poeciliid fish (genus Gambusia) from the Rio Grande drainage of Coahuila, Mexico". Southwestern Naturalist. 8(3):154-161 (ffm04577)
Conservation: Gambusia krumholzi is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.