Known from the Laguna Azteca in the headwaters of the Rio Panuco of the Rio Moctezuma Basin, 6 km north of Molango, Hidalgo (20° 48′ N, 98° 45′ O, 1280 masl). Possibly found in the Rio Santa María, Rio Venados, and Rio Amasa in the states of Queretaro and Hidalgo. Considered as C. labridens, listed as threatened by the NOM-059-ECOL-2010 and endangered by the IUCN Red List of Threatened Species 2009. Threatened by the introduction of the largemouth bass (Micropterus salmoides) and sunfish (Lepomis spp.) (Ref. 94458).