Another story for you, I had a Green Wrasse and Mysteri Wrasse the Green was added before the Mysteri both around the same size. They were in my 120G. I never saw the Mysteri for the first 5-6 months only zipping in and out to feed and the odd swim around I had seen some aggression and chasing around by the green wrasse.
Since I have had got rid of the green wrasse to a new 400G home the Mysteri wrasse is out swimming around and my favorite fish again.
So I guess is there anything bugging it?