Here's another one for you.
You are a pond owner in Michigan. You have a permanent inflow and/or outflow built into your pond. (i.e. an overflow drain will fit the criteria) You must have a stocking permit from the state to stock fish into your pond. If you call me to stock fish in your pond, and you do NOT have the stocking permit, I can be held accountable for stocking the pond without a permit, the same as the owner. That is the reason why you will find very few out of state companies that will stock fish in Michigan, if any. The state of Michigan expects me to be part of their police force, making sure that the pond owner has the stocking permit.
Personally, I would not live in such a nanny state that required such permits. Just a principle of personal freedom.
BTW, where did the original stock for all fish farms come from? PUBLIC waters.