What order did you put your fish in? Most wrasses are considered to be aggressive and should be added with caution and clowns vary, the most peaceful it the ocellaris but the tomato aggressive. The royal gramma is usually considered peaceful.
how long has he been in the tank? if you just added him maybe it will pass once they show him who is boss in tank but if you want to try to help him you can do a few things one is re arrange your aquascape another is to remove all the fish to a seperate tank for a week or so then add all back to the tank..
special thanks to melosu58 , roka , thincat,CaptainAhab (and many more who i will list later as i find thier names so i can spell them lol ) for i would not have the tank or the knowledge i have about my tank if not for them.