I have a Flame Angel in my 90 gallon tank, and he behaves for the most part. Based on my guy, he loves picking at the Brains. I have no problems with him picking on the Torch or Frogspawn, but I had to move my Brain to another tank. Every one will tell you that Angel fish in reef tanks are hit and miss. I love my Flame Angel, so it was worth the risk to me. No other issues with him yet!!!