Original description as Hyporhamphus mexicanus:
- Álvarez del Villar, José. 1959. "Nuevas especies de Xiphophorus e Hyporamphus procedentes del Río Coatzacoalcos (Pisc., Poeciliidae y Hemiramphidae)". Ciencia. 19(4-5):69-73 (ffm00051)
Conservation: Hyporhamphus mexicanus is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.