the rose BTA is not known to host the occelaris in the wild. It is just a mater of chance if they do in the home aquarium. When I had an occellaris it took to my BTA in no time for some reason. Now I have a pair of true percs and the BTA hosts them as well. However, my percs seem to like my torch coral and hammer coral better. They pretty much make the rounds, spending time in my BTA, torch coral, hammer coral and hairy mushroom. I have recently had one "head" on my torch coral die for some reason. I am not sure if it is related to the clowns or not. The rest of the coral looks great. I would not worry too much about it...Lando