As Clarence said, you have just about every species swimming around there. Bass, pike, perch, crappie, sunfish, salmon, trout, bullheads, channel cats, white bass, gar, sheepshead, carp, you name it. One guy on youtube even caught a lake trout in there! I hear there are some slab crappies kicking around right now if you know where to look
For bait, you can't go wrong with live minnows or worms underneath a float or try throwing some tube jigs around right now. Corn works good for carp too if your in to that.