Aquatic Nuisance - european rudd
European Rudd (Scardinius erythrophthalmus)
Where did they come from?
- Originated in Western and Central Europe.
- They were introduced in the United States during the 1890â€™s and again in the late 1960â€™s.
Where can they be found in South Dakota?
- European rudd can be found in many waters of the state including the Missouri River Reservoirs, Pactola and Sheridan Reservoirs, and lakes in Northeast South Dakota
What do they look like?
Rudd can typically grow to lengths of approximately 18 inches, and can weigh over two pounds.
They resemble native golden shiners but can be distinguished by the presence of scales that completely cover the belly (shiners lack a fully scaled belly).
Why are they a problem?
- Rudd quickly outgrow predation making them of little use to predatory fish.
- They have been known to hybridize with golden shiners which are a native prey fish of predators such as walleye or pike. Hybridization may have detrimental effects to the genetics of native shiner populations.
How are they spread?
- Rudd are very difficult to distinguish from native shiners.Â They are often misidentified and sold as bait.Â Intentional or accidental release by anglers is the primary way this species spreads.
Check out Aquatic Nuisance Species Prevention on ways to prevent the spread of Aquatic Nuisance Species