Original description as Cualac tessellatus:
- Miller, Robert Rush. 1956. "A new genus and species of cyprinodontid fish from San Luis Potosi, Mexico, with remarks on the subfamily Cyprinodontinae". Occasional Papers of the Museum of Zoology, University of Michigan. (n. 581), pp. 1-17 (ffm00169)
Conservation: Cualac tessellatus is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (VU) vulnerable (2018).