My parrot fish is huge now and chasing all the other chilled out fish around for no reason

Might have to get rid of him, bet he is worth £50 now..

Anyone used a divider or anything to seperate him from the rest of the tank (with holes so he can see the other fish, just not go after em?)

Or do I just get a bigger fish than him, I do have the filtration to cope etc

But the Angel fish is the next size down, and I remember him chasing others when he was the biggest.

Yes I have moved the tank around to neutralise terratory..

Any ideas? (NOT pirhana based please - think these are salt water anyway)