Should be fine, as long as you don't have corals or u keep it well fed. I have one in my 180 and it used to pick at the few corals I have. If I feed it 2-3 times per day it leaves the corals alone...
A 65g is too small. I'd say a 75g is the minimum size for this fish, but minimal standards aren't sufficient for me. I like to see my fish in more comfortable homes.