I was lucky enough to win the $50 dollar gift certificate to ocean gallery and with this i want to get a new fish for my 25 gallon nano. I currently have a black ocellaris and a royal gramma. I want something colorful but i would prefer it has some benefit for the tank. It is not necessary, only preffered. What do you all suggest? I want a flame angel but im not gonna risk it picking at my corals.