Mich. Comp. Laws § 324.48730: Powers of department.

Sec. 48730.

The department may designate the lakes and streams and parts of lakes and streams from which minnows, wigglers, and crayfish may be taken for commercial purposes and make rules, regulations, and restrictions for taking, possessing, and transporting minnows, wigglers, and crayfish.

A person shall not take or attempt to take minnows, wigglers, or crayfish for commercial purposes from any waters of the state not designated by the department or violate any of the rules, regulations, or restrictions established pursuant to this section.