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Cyprinodon pachycephalus Minckley & Minckley, 1986 Bighead pupfish |
| Family: | Cyprinodontidae (Pupfishes), subfamily: Cyprinodontinae | |||
| Max. size: | 5 cm TL (male/unsexed) | |||
| Environment: | benthopelagic; freshwater, non-migratory | |||
| Distribution: | Central America: Río Conchos, Mexico. | |||
| Diagnosis: | ||||
| Biology: | Not a seasonal killifish. Is very difficult to maintain in aquarium (Ref. 27139). | |||
| IUCN Red List Status: | Critically Endangered (CR); Date assessed: 28 September 2018 (B1ab(i,iii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||