Richardsonius egregius (Girard, 1858)
Lahontan redside
Richardsonius egregius
photo by Ribeiro, F.

Family:  Leuciscidae (Minnows), subfamily: Pogonichthyinae
Max. size:  17 cm TL (male/unsexed); max. reported age: 5 years
Environment:  benthopelagic; freshwater
Distribution:  North America: Lahontan and other interior basins in northern Nevada and northern California, USA including Humboldt, Walker, Carson, Truckee, Susan, Quinn and Reese River systems; Walker, Tahoe and Pyramid Lakes. Introduced elsewhere, including upper Sacramento River systems in California.
Diagnosis:  Distinguished from a similar species Richardsonius balteatus by having less anal rays (8-9, rarely 10), longer snout, more slender body and less slender caudal peduncle (Ref. 86798).
Biology:  Occurs in margin of lakes and all types of stream habitats but usually in pools and slow runs (Ref. 86798).
IUCN Red List Status: Least Concern (LC); Date assessed: 01 March 2012 Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Froese, Rainer - 01.05.91
Modified by: Torres, Armi G. - 13.01.15
Checked by: Torres, Armi G. - 11.05.94

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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