Winona, MINNESOTA (WXOW) – The carcass of a Silver Carp was found on a dam just north of Winona. The Minnesota Department of Natural Resources said this is the furthest upstream a Silver Carp has been discovered on the Mississippi River.
The DNR said they assume the fish was trying to jump over the dam. Silver Carp are the type of fish that leap from water when disturbed.
A worker with the U.S. Fish and Wildlife Service first noticed the fish on August 9th. The fish was atop a concrete abutment just below Lock and Dam 5, about 20 miles further upstream of the previously northernmost instance of a silver carp. The dam is about 110 miles south of Lock and Dam 1 in St. Paul.
Silver carp are one of four species of invasive Asian carp threatening the Mississippi River and other native ecosystems. They can grow to 60 pounds, and they impact the base of the food chain by consuming large amounts of plankton that native fish also rely on.
Populations of bighead and silver carp are established in the Mississippi River and its tributaries downstream of Pool 16 in Iowa. Bighead carp have been found in Lake Pepin and the Mississippi and St. Croix rivers, and as far north as the mouth of the St. Croix in Prescott, Wis. But there is no indication bighead or silver carp are reproducing in the Minnesota waters of the Mississippi or St. Croix rivers.
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