I'm trying to figure out what to add to my 120g. My issue is that's its 3ft wide. I want a tang, but know they need plenty of swimming room, and I feel, after reading A LOT, that my tank won't be good for them. I have a coral beauty in my tank, and I'm wondering what would happen if I added a flame angel? I love their small size and striking color. Am I asking for trouble if I have two dwarf angels in my 120? Opinions, personal experiences, etc? Thanks.