Original description as Gambusia alvarezi:
- Hubbs, Carl Leavitt & V.G. Springer. 1957. "A revision of the Gambusia nobilis species group, with descriptions of three new species, and notes on their variation, ecology and evolution". Texas Journal of Science. 9(3):279-327 (ffm04561)
Conservation: Gambusia alvarezi is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (VU) vulnerable (1996).