Hi guys I’ve got 2 small yellow tangs that was living peacefully. 2 days ago I saw a similar size purple and decided to add 1 to my tank. After 2 days the purple tang go all crazy and started attacking the 2 yellow tangs . Both yt has got bitten badly on the fins. Caught both of the yellows out ( can’t get the purple) and put them in isolation box. Even in isolation box. The purple keeps harassing them trying to attack. Question is will the purple learn to give up and not chase after a week or 2?