Hi Folks Have had a Red BTA for about 8 mnths. He hosts two clowns. About two months ago moved my tank and upgraded to a 90g from 55. In the new tank he has moved around the rock quite a bit but seemed to have settled in a spot for about 3 weeks. Yesterday, he left the bottom of the rock and started migrating up the tank and now has wedged himself in the corner of teh overflow box and is partially closed up. Clowns are still hanging with him and nesting. Should I be concerned? Could he be sick? Any thoughts or suggestions would be appreciated.