Wis. Stat. § 29.421: Removal of rough fish.

The department may take rough fish by means of seines, nets or other devices, or cause rough fish to be taken, from any of the waters of this state, other than waters in a self-contained fish rearing facility or in a preexisting fish rearing facility that is an artificial body of water. Whenever the department takes rough fish under this section it shall dispose of the fish in any manner that it determines to be appropriate.