Purple tangs can be real bullies. My Scopas tang made my Purple tank stay in a cave for about 3 months. Added them at the same time with a Gem tang also (3 Zebras). When I added a my Blue Face angel he decided he wanted the cave the Purple tang was in. Now the Purple decided he has had enough and was tired of being bullied. The Purple beat the heck out of the Scopas! Now the Scopas has to hide in a rock. The Scopas hid for almost 2 weeks. I though he was dead. After about a month the Purple lets the Scopas swim around some but not much.
Long story short adding another fish or changing the tank in any way can dramality change the pecking order. It can flip one way or the other as time goes on. Good Luck!
Long story short adding another fish or changing the tank in any way can dramality change the pecking order. It can flip one way or the other as time goes on. Good Luck!