''Richardsonius'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

cyprinid Cyprinidae is a family of freshwater fish commonly called the carp or minnow family. It includes the carps, the true minnows, and relatives like the barbs and barbels. Cyprinidae is the largest and most diverse fish family and the largest ver ...

fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of ...

consisting of two species native to western North America. Commonly known as redside shiners, that term is also used to refer to ''

Richardsonius balteatus The redside shiner (''Richardsonius balteatus'') is a species of cyprinid fish found in the western United States and Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean ...

'' specifically. The genus is named after naturalist Sir John Richardson (1787–1865), who described ''R. balteatus'' in 1836.

Species

* ''

'' ( J. Richardson, 1836) (Redside shiner) * '' Richardsonius egregius'' ( Girard, 1858) (Lahontan redside)

References

* * Fish of North America Fish of the United States {{Leuciscinae-stub