I just introduced a beautiful purple tang and a sailfin tang in my 215 Gal
tank and immediately, my yellow tang is harrasing the other two tangs. The yellow tang is just slightly larger than both of the newbies. I read that put in a mirror in the tank would help the yellow tang see its reflection and leaves the new purple tang alone. That method helped a little bit, but he still go to other corner where the other tangs are hiding and harrasing.
I also read that remove the yellow tang and put him in another tank for a few weeks. This is almost impossible because my tank is deep and long.
How long would the yellow tang's behavior continue? Any advices?