Richardsonius egregius
Lahontan Redside
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Cypriniformes (Carps and Minnows)
Cyprinidae (Carps and Minnows)
Richardsonius
Richardsonius egregius (Lahontan Redside)
Description
This species account was compiled from
FishBase (Froese, R. and D. Pauly. Editors. 2025. FishBase. World Wide Web electronic publication. www.fishbase.org, version 04/2025.)
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Characters
Body shape: fusiform / normal. 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).
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.
Habitat Associations
Freshwater. benthopelagic. Found in: streams, lakes.
Biology
Occurs in margin of lakes and all types of stream habitats but usually in pools and slow runs (Ref. 86798).
Max length: 17.0 cm TL; common length: 7.2 cm TL; max age: 5 years.
IUCN Red List Status: Least Concern (LC), assessed 2012-03-01. Resilience: Medium (tmax=5).
References
Page, L.M. and B.M. Burr (1991) A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p.
Page, L.M. and B.M. Burr (2011) A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p.
Comments On Richardsonius egregius