I'm debating starting up an aquarium. I've got room for a 29 gallon (30x12x28) lxwxh.

I'm particularly interested in species native to the midwest. Anyone have any good suggestions? Would a couple of small sunfish or perhaps a small bass work in there for any length of time before needing a bigger aquarium? I'm pretty sure I could have a couple small bullheads or other small catfish species in there and they'd be perfectly happy.

This is probably also going to be a good excuse to start raising nightcrawlers.. as feeders for the fish and also to use for fishing. Are nightcrawlers a good base diet for any particular species, or is that not a good idea, nutritionally speaking?