I am still new at this I may not be the best to give advice or suggestions, but I thought I might be able to share some of my experiences with foxfaces. I have a Foxface Lo (have had him about 7months) and a One Spot (have had him about three weeks) in a 6ft 220. I just recently added the One Spot. After a few disagreements about sleeping quarters they now get along fine. In fact, the two foxfaces and the sailfin typically cruise the tank together. I have yet to have either of them even eye any of my corals. I feed frozen and algae sheets. I one to two sheets of algae in the tank every day and it is gone every day. They are pigs when it comes to food. Also, be aware that they learn you and your feeding habits. They see me coming and wait by the clip. It's a little unnerving the first time they brush your hand. I haven't been stabbed yet, but I've definitely started to change my habits so they aren't so willing to greet me every time I stick my hand in the tank. And as for compatibility, both foxfaces are the protectors of the tank. I used to have a jerk damsel that was a known killer and it was a blast to watch the foxfaces corner him like he was being put in time out. Foxfaces are great and I've had no problems with them. As stated in the beginning, I'm still a newbie, so take everything with a grain of salt. Just thought I might share my experiences on some of my favorite fish.