I am at a loss on what to do - I have a 90 gal reef and 70 gal sump. My fish are a coral beauty, 2 perculas, nice size yellow tang and a yellowtail damsel. These fish are all over 3 years in my tank. I spotted a nice g.f. angel that I would like to put in but have reservations bec of the coral beauty. Please make a fish suggestion if you don't like the g.f. angel. I don't want a wrasse bec my tank is uncovered. Thanks in advance for your advice.