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Low oxygen kills fish in Minn. river
Thousands of fish in the Pelican River in northern Minnesota are dead, likely a result of low oxygen levels, according to a report from the Duluth News Tribune.
Species affected by the fish kill include black crappie, northern pike and yellow perch. The low oxygen is a result of normal winter conditions like ice cover exacerbated by low autumn water levels brought on by drought, according to the Department of Natural Resources. The die-off began when the river was still ice-covered, but now that the river is open the DNR expects oxygen levels to rise and the fish population to eventually recover.
Read more at the Duluth News Tribune.