I have it in the tank with three other triggers, a S&T Puffer, and a SoldierFish. I once saw a huge Queen in a store that would attack the glass if you put your fingers up to it. I knew they got really big, but I have no idea how fast or exactly how mean they are. It has not bothered any of the other fish yet. The other Triggers are less than half it's size. I bet that is why it was on sale. The LFS wanted it outta there before it took on the community.
Oh, I have a Fimbriated Moray in there, too.