| Cyprinodontidae (Pupfishes), subfamily: Cyprinodontinae |
| 4.6 cm SL (male/unsexed) |
|
benthopelagic; freshwater |
| North America: restricted to the upper Santa Cruz basin in southern Arizona and Northern Sonora. |
|
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). |
|
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Extinct (EX); Date assessed: 18 November 2011 Ref. (130435)
|
| harmless |
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