How's your budget...are you looking to start out cheap? I just setup a 55g tank and have the folowing: 1 yellow tang, 2 clown fish, 4 yellow tailed damsels, 6 yellow wrasses, 1 lawnmower blennie (very cool), and an assortment of shrimp, crabs, hermit crabs, and snails. It cost me about $150.00.