Oh I didn't notice the yellow, yea he would probably harass the new purple. The rest are good fish, but the kole might get harrased, it would be best to get a kole larger than the yellow tang you have now. As for my Angel hes alive and well, but he still has the spots. I now see why its bad to treat in the main, the meds wiped out all my alage, and my tank is yellow. All inverts are ok though. Thanks for asking, if he dosent recover tommorow I will probably throw together a 10 gal QT
, to expensive to continue treating in the main. Hope your bannerfish makes it as well.