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DNR fry marking study a high-tech venture

Published 05/20/2012, Grand Forks Herald

Fisheries crews for the Minnesota Department of Natural Resources again this spring marked walleye fry with oxytetracycline, or OTC, as part of an eight-year study launched in 2008 to determine the optimum number of fry that should be restocked in lakes where eggs are removed for stocking purpose.

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