Hi I 2nd what SGOULD has to say about the kole tang beware not to put one in a small reef tank, as it can do a lot of damage if you have delicate plants and algae growth that you want to keep. In a very large reef tank the plant growth can recover, as the Kole has so much to pick from, Tangs also being
ICH magnets you will have a problem when he grows a little larger as he will get stressed out with the lack of swimming space , which could wipe out your tank if not caught in time, they are aslo prone to black spot (Tang Disease) which is harder to see due to there colouration , but fortnatly is not as bad as white spot ,,