I had a Flame awhile back. I kept him in a 55. He did well and got along well with my Tang. They swam around the tank together. I introduced a Clownfish after him, and he harrased the clown so much that it never left the corner of my tank. I had a Pajama Cardinal which would "stick up" for the clown, but the Flame went after him even tho the Cardinal was double his size. I never had any issues with the Flame nipping at corals. A Flame will do fine and will most likely be peaceful, but to keep that peace do NOT introduce any other fish after him. Make sure he is the LAST fish you put in your tank. I would stock the tank with the other fish you want and hold off on the Flame. If you can accept the fact that you will not be able to buy any fish after him, then go get one. They add alot of color to the tank.