In addition to what Vic said you will have to make sure that you do not capture fish that are on the DO NOT HARVEST list and there are several on that list. Another thing to consider is that most streams are on private lands.
Link to the Do Not Harvest
Regulations | MDC Hunting and Fishing

There is also a statement in there about keeping the receipt for the minnows you have purchased.

If I thought the minnows were too small I would just use jigs.