最初描述为 Cyprinodon pachycephalus:
- Minckley, Wendell L & C.O. Minckley. 1986. "Cyprinodon pachycephalus, a new species of pupfish (Cyprinodontidae) from the Chihuahuan Desert of northern Mexico". Copeia. 1986(1):184-192 (ffm00183)
保育: Cyprinodon pachycephalus 由国际自然保护联盟(IUCN)在濒危物种红色名录中为自然保育而进行了评估 evaluated (CR) 极危(Critically endangered) (1996).