try firefish, royal gramma, cardinal fish, gobies.., hawk fish, jawfish, blennys, clowns ofcourse but beware of Saddlebacks, Maroons,Clarkii, and Tomato they are the most aggressive, mandarins are really cool if you set up a copepod farm or train them to eat other stuff(my Starry Dragonette/Red Scooter Blenny(2 years old now) eats chopped silver sides, mysis, brine, and now trying to get him to eat pellets that fall to the sand) Fish prolly need the most research, the biggest reason, IME, being that if you put something in there that you dont like or doesn't work out with other fish or corals you will likely have to take all the rock out to get the fish out

I had a six-line: can be aggressive toward super doscile fish, and eats crabs, but is really entertaining. Other wrasses, cannot say, but to say that some are defintiely NOT reef safe and that alotta people have flashers and fairy wrasses in their reefs. check out aquacon.com for the reef safe/non reef safe categories