Original description as Xiphophorus monticolus:
ZooBank:76A3AE8A-5DDE-44B4-9727-ECF932F768DE.
- Kallman, Klaus D & R.B. Walter, D.C. Morizot, S. Kazianis. 2004. "Two new species of Xiphophorus (Poeciliidae) from the Isthmus of Tehuantepec, Oaxaca, Mexico, with a discussion of the distribution of the X. clemenciae Clade". American Museum Novitates. (3441):1-34 (ffm00266) (abstract)
Conservation: Xiphophorus monticolus is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.