Original description as Cyprinodon atrorus:
- Miller, Robert Rush. 1968. "Two new fishes of the genus Cyprinodon, from the Cuatro Cienegas basin, Coahuila, Mexico". Occasional Papers of the Museum of Zoology, University of Michigan. (659): 1-15 (ffm00173)
Conservation: Cyprinodon atrorus is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (1996).