最初命名為 Gambusia alvarezi:
- Hubbs, Clark L & Victor 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)
保育: Gambusia alvarezi 被評鑑為國際自然保育聯盟瀕危物種紅皮書名單中的 (DD) 資料缺乏 (1996). Gambusia alvarezi has a very limited distribution in and around Ojo de Agua de San Gregorio, which is found in good shape up to our days (May 2023). The small area of the spring is kept isolated by a fence since the water is used for human consumption.