I had an issue today introducing some new fish and need advice on how I can proceed. I have a 5 ft mixed reef tank that I setup in the fall. I have 4 Tangs of differing species and the biggest fish in the tank is also my favorite one. It's a powder blue tang named Mully after Warriors great Chris Mullen... A month ago I introduced the tangs together and Mully and Wu (My yellow tang) went at it a bit. They would have occasional fights where they whacked each other with their tails. These were short encounters that ended soon after starting and neither fish seemed in danger. Today I introduced a Midas Blenny, 2 Wrasses and a One Spot Foxface. After acclimating the fish with the lights off I turned them back on and even fed the tank hoping that they would all feel fat & happy. Mully relentlessly attacked the Foxface. He was biting him as opposed to whacking him with his tail. The Foxface tried to hide and Mully kept hunting him down. The One Spot started to look weak and began swimming on its side. It was also showing micro bubbles from the stress. I decided that if I didn't intervene the Foxface would not last much longer. I placed the FoxFace back in thee CPR Aquatics First Aid system I acclimated him in but I hooked up the mini pump to provide a flow of water through it. He settled down and looks fine, other than being bored to death in a small cell. He took some food in there. Mully proceeded to go after the Midas Blenny and the Wrasses. The Midas quickly hid in a rock and the Wrasses buried themselves in the sand under a rock. Neither came out much more. I have heard that Powder Blue Tangs can be aggressive and mine is certainly a bully. I should probably change his name to Draymond (Warriors fans will understand)... Do I need to give up the Foxface or can these guys coexist? What guidelines do I need to follow if I want to add more fish in the future? Thanks all!