If you are looking for some examples of some small tank fish that are pretty cool and that should be fairly peaceful together, the following is my stocking list for my 75g. I don't have very many fish and the ones I do keep I like to keep the fish kind of smallish side so I don't every have to worry about overpopulating or have to get rid of them in the event they get too big. My livestock includes the following Fantail Orange Filefish and a Firefish Goby along with a mated pair of Ocellaris, bonded pair of Pajamas, bonded pair of Banggais, a cleaner shrimp and a BTA. Probably pretty boring although with the exception of the clowns, everything is fairly inexpensive; as much as it can be with a SW reef tank. I am a novice at the coral world and have ventured into the zoanthids and some mushrooms although none of the fish seem to both anything in there.