Original description as Cyprinodon beltrani:
- Álvarez del Villar, José. 1949. "Una nueva especie de peces Cyprinodontiformes de la laguna de Chichankanab, Quintana Roo". Revista de la Sociedad Mexicana de Historia Natural. 10(1-4):235-240 (ffm00174)
Conservation: Cyprinodon beltrani is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (EN) endangered (1996).