Original description as Dionda mandibularis:
- Contreras-Balderas, Salvador & J. Verduzco-Martínez. 1977. "Dionda mandibularis, a new cyprinid fish endemic to the Upper Rio Verde, San Luis Potosi, Mexico, with comments on related species". Transactions of the San Diego Society of Natural History. 18(16):259-266 (ffm00126)
Conservation: Tampichthys mandibularis is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.