Cyprinodon pisteri Miller & Minckley, 2002
Palomas pupfish

Family:  Cyprinodontidae (Pupfishes), subfamily: Cyprinodontinae
Max. size:  4.9 cm SL (male/unsexed); 4.93 cm (female)
Environment:  pelagic; freshwater
Distribution:  North America: restricted to the Lago de Guzmán basin of northern Chihuahua in Mexico and possibly southwestern New Mexico, USA.
Diagnosis:  Dorsal soft rays (total): 8-11; Anal soft rays: 9-11; Vertebrae: 25-27. In breeding males dorsal fin dusky to black, not yellow or orange; band on caudal fin narrow (narrower that eye-diameter) and often diffuse or absent; first dorsal fin ray thickened and spikelike; ocellus usually well developed in dorsal fin of females, no anal fin ocellus; breast fully scaled; modally 10 dorsal and anal fin rays; 7 pelvic fin rays, 25-28 (mode 26) scales in lateral line and modally 26 vertebrae (Ref. 43452).
Biology:  Occurs in springs, ciénegas, shorelines and cutoff channels of rivers and creeks, even colonizing ephemeral canals and ditches along roadsides (Ref. 43452). Distinct pairing during breeding. (Ref. 205). Demersal eggs with adhesive threads (Ref. 205).
IUCN Red List Status: Least Concern (LC); Date assessed: 06 March 2018 Ref. (130435)
Threat to humans:  harmless
Country info:   
 


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