Creek Chubs are an early season fav by tourney anglers as few bait shops have suckers before the inland opener.
They are held like any other bait (cooler, bubbler change water often) except they have to have a lid on or they will jump out.
They work great for early season flatheads as well.
Since most are caught out of creeks and ditches (non AIS infested), they can be transported alive and used in other bodies of water then where caught.
Normally they are fished on a dead stick and are very effective for the larger size walleyes. Or so I’ve heard.