| Family: |
Cyprinodontidae (Pupfishes), subfamily: Cyprinodontinae |
| Max. size: |
4.6 cm SL (male/unsexed) |
| Environment: |
benthopelagic; freshwater |
| Distribution: |
North America: restricted to the upper Santa Cruz basin in southern Arizona and Northern Sonora. |
| Diagnosis: |
Dorsal soft rays (total): 9-10; Anal soft rays: 9-11; Vertebrae: 25-27. Distinct dorsal-body surface, which is highly convex before the dorsal fin but changing abruptly at the dorsal origin into a deep, postdorsal concavity most developed in breeding males; absence in nuptial males of distinctive yellow or orange pigment on either the caudal fin or peduncle; weak development of lepidodonts and modally six preopercular pores (Ref. 43452). |
| Biology: |
|
| IUCN Red List Status: |
Extinct (EX); Date assessed: 18 November 2011 Ref. (130435)
|
| Threat to humans: |
harmless |
Source and more info: www.fishbase.org. For personal, classroom, and other internal use only. Not for publication.
