The Department of Natural Resources says Asian carp DNA has been found in the Kalamazoo River.

Officials say tests from July found genetic material from silver carp, a variety of the Asian carp, and that further tests were being conducted with the assistance of the U.S. Fish and Wildlife Service. So far, no live silver carp have been found in the river, or anywhere else in the Great Lakes Basin, but the DNR says it will increase its presence along the river and intends to ask anglers to report any Asian carp sightings.

Environmental experts have warned if the Asian carp were to make it to Lake Michigan, the Great Lakes $7 (B) billion commercial fishing industry would be destroyed.