A little info about my tank, I have various soft reef, beginner reefs. The tank is 55 gallons in size. A couple months ago I bought a Yellow Tang. Upon purchase the Tang was an adolescent. I also bought a Coral Beauty the same day. In the tank at the time, there were around 30 snails and 20 hermit crabs, along with 3 or 4 Emerald crabs; a Scooter Blenny. The Tang and Coral Beauty fought over territory and ended up becoming friends within the first week. The Coral Beauty died weeks later by somehow swimming into the power jet.
Present day - the Tang and the Blenny still remain. They get along. I have attempted introducing several fish, 2 Lawnmower Blennys and a Six Line Wrasse. The Yellow Tang has killed every new fish I have introduced in the tank. I have also caught him killing snails and eating hermit crabs after pulling them out of the shell. There are some peppermint shrimp on the list too.
I feed the Tang once, mid-day. There is plenty of fresh algae for him to eat in the tank, also. Most is grown in my refugium. Is there anything I can do to prevent the Tang from killing new fish I put in my tank? Is there something specific causing this? Is he just a jerk?!?