Regulators have spent more than $600 million to keep them from the Great Lakes and waters such as Lake Barkley on the ... feeding on algae and plankton. Grass carp eat aquatic plants, while ...

For decades, invasive species of carp have been wreaking havoc on lakes and waterways in the American Midwest. One way to help tackle the infestation is simply to catch, cook and eat the fish ...

New rules recently approved by the Oregon Department of Fish and Wildlife will allow the district to reintroduce sterile grass-eating carp into the lake, although under more controlled conditions.

When released into the wild, they spread rapidly despite scientists’ doubts that they would reproduce, and now present a huge ecological problem, especially silver carp. “They're eating green ...