Uznawany jako synonim Gambusia affinis (Baird & Girard, 1853)
- Baird, Spencer F. & C.F. Girard. 1853. "Descriptions of new species of fishes collected by Mr. John H. Clark, on the U. S. and Mexican Boundary Survey, under Lt. Col. Jas. D. Graham". Proceedings of the Academy of Natural Sciences of Philadelphia. 6:387-390 (ffm04562)
Oryginalny opis jako Gambusia myersi:
- Ahl, Ernst. 1923. "Gambusia modesta sp. n". Blätter für Aquarien- und Terrarien-Kunde. Stuttgart. 34:220-221 (ffm04572)