Tang problems

[dwerbs87]

So I have my tank up and running, looking great. I had purchased a yellow tang about a month ago and then last week a regal tang came available. The tank is 96 inches long and the two tangs are quite different shapes and families. But the yellow tang will chased the smaller hippo every once in awhile. No damage has been done just some flared fins and charges. Do you think this may calm down or will it only get worse?