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Cyprinodon arcuatus Minckley & Miller, 2002 Santa Cruz pupfish |
| 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 | |||