Etheostoma segrex Norris & Minckley, 1997
Río Salado darter

Family:  Percidae (Perches), subfamily: Etheostomatinae
Max. size:  4.11 cm SL (male/unsexed); 4.38 cm SL (female)
Environment:  benthopelagic; freshwater
Distribution:  Central America: upper Rio Salado de los Nadadores in Bolson de Cuatro Ciénegas, Coahuila, Mexico.
Diagnosis:  Dorsal spines (total): 8-11; Dorsal soft rays (total): 8-10; Anal soft rays: 6-7; Vertebrae: 35-37
Biology:  Occurs in habitats with moderate turbulence over gravel and small cobble substrate. Seems to concentrate in vegetated areas when present. Also found in eddying currents along vegetated or cobble shorelines.
IUCN Red List Status: Critically Endangered (CR); Date assessed: 30 August 2018 (B1ab(iii,v)) Ref. (130435)
Threat to humans:  harmless


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