by Minnesota DNR

Thousands of common carp died last month in Waseca County’s Lake Elysian because of a virus likely introduced to Minnesota waters by the release or escape of ornamental koi or pet goldfish.

A joint effort by the Minnesota Department of Natural Resources and the University of Minnesota have determined koi herpesvirus (KHV) was the main cause of the late-June fish kill in southern Minnesota. It is the state’s first documented case of the virus in a wild fish population.

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