From the regulations:
e. The only species allowed to be taken and used
for consumption or used as bait (either alive or
dead) by fishing, seining, netting, trapping or
dipping are minnows, 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 bluegills and yellow perch.
Creek chub aren't on the list of permitted fish allowed for bait, so I recommend you don't use them, as I don't believe they're considered to be minnows. Also, while Lake Chub are seperate species from creek chub are protected as a species of concern and prohibited to be taken for any purpose. Make sure the species your catching is creek chub before taking them.