here is what i found out of the DOW fishing guid book
MINNOW: Members of families of fish classified Cyprinidae (carp, chub, dace, goldfish, minnow,
shiner, stoneroller and tench) Cyprinodontidae (killifish, topminnow) and Clupeidae (gizzard shad)
except those designated as nongame, threatened or endangered.
and here is what they say about using minnows
(b) The only fish species that can be taken and/or used for consumption or personal use as bait (alive or dead) by seining, netting, trapping or dipping are minnows (except in ?c? below), bluegill, hybrid bluegill, carp, sunfish, gizzard shad, sculpin, white and longnose suckers, yellow perch and rainbow smelt. Statewide bag limits apply to sunfish, bluegill, hybrid bluegill and yellow perch. It is illegal to take, possess or harvest for private or commercial use as bait threatened or endangered species or species listed as nongame in wildlife regulations. See #5 and 6 below for a list of these species.
(c) The only species that can be taken for commercial use are: minnows (except those listed as threatened, endangered or prohibited); gizzard shad, white and longnose suckers (except those listed as threatened, endangered or prohibited); and carp (except those listed as threatened, endangered or prohibited).
See ?Nongame Species.?