Original description as Ceraticthys vigilax:
- Baird, Spencer F. & C.F. Girard. 1853. "Descriptions of new species of fishes, collected by captains R. B. Marcy, and Geo. B. M'Clellan, in Arkansas". Proceedings of the Academy of Natural Sciences of Philadelphia. 6:390-392 (ffm00109)
Synonyms (1):
- Cochlognathus ornatus Baird & Girard, 1854, with type locality at Rio Grande at Brownsville, Cameron County, Texas, U.S.A. Determiner: Gilbert, 1998
Conservation: Pimephales vigilax is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.