| Rudds | |
|---|---|
| Scardinius erythrophthalmus | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Cypriniformes |
| Family: | Cyprinidae |
| Genus: | Scardinius Bonaparte, 1837 |
Scardinius is a genus of ray-finned fish in the Cyprinidae family commonly called rudds. Locally, the name "rudd" without any further qualifiers is also used for particular species, particularly the Common Rudd (S. erythrophthalmus). The Rudd can be distinguished from the very similar Roach by way of the Rudd's upturned mouth, allowing the Rudd to pick food items such as aquatic insects from the surface of the water in which it resides.