| Richardsonius | |
|---|---|
| |
| Richardsonius balteatus hydrophloe | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Cypriniformes |
| Family: | Cyprinidae |
| Clade: | Pogonichthyinae |
| Genus: | Richardsonius Girard, 1856 |
| Type species | |
| Cyprinus (Abramis) balteatus Richardson, 1836
| |
Richardsonius is a genus of cyprinid fish consisting of two species native to western North America. Commonly known as redside shiners, that term is also used to refer to Richardsonius balteatus specifically. The genus is named after naturalist Sir John Richardson (1787–1865), who described R. balteatus in 1836.