If you apply for an aquaculture license with your state [in NE it's $75 annually] you may subsequently apply for a depredation permit for critter causing fiscal damage to your business. Cormorants, GBH, Muskrats, Beaver, et al could be on the table. Just a thought.

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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