My tangs (desjardini and scopas) have been fighting nonstop since I introduced the desjardini, which is bigger than it. It’s a 60 gallon and they are only about 2 inches big, with the bigger one being 3 inches. The scopas was insanely peaceful but now he just chases down the desjardini whenever he sees him. I’ve used the mirror trick and the scopas is dumb enough to attack himself, but I don’t know how to use the mirror trick in order to try and stop this for good. Do I just leave the mirror up until he stops being aggressive? My scopas has 2 tiny scratches and his lip is a bit busted, and my desjardini has one little cut on his fin but he’s a tank. Any help would be appreciated.