i agree with biggourami, a lemarks angel would be nice in there. everywhere i read said they are pretty much one of the only reef safe angels. but i got one in my 75 FOWLR and he is awesome! very cool colors, energetic, all over the tank, i think he doesnt like the air bubbles from the stone cause sometimes he would shoot over to bite at the air bubbles then swim away. very graceful in the water too