Considered a synonym of Cyprinodon variegatus Lacepède, 1803
- Lazara, K.J. 2001. "The killifishes, an annotated checklist, synonymy, and bibliography of recent oviparous Cyprinodontiform fishes". The killifish master index. 4:1-624 (ffm00080)
Original description as Esox ovinus:
- Mitchill, S.L. 1815. "The fishes of New York described and arranged". Transactions of the Literary and Philosophical Society of New York. 1:355-492 (ffm04539)