I was changing by background to solid for photography. My aro LOVED it when I had the back of the tank uncovered. I have since tried black, the old one and he freaks, headbangs and has been agitated. Now I thought it made them feel safer. I know he's at his max in the tank he's in and I'm in the middle of setting up the newer bigger one, but this behavior sucks. I want it, he doesn't? Should I leave him happy and ugly or not allow him to determine his lifestyle? What is best for the aro? health? training? is my fish a spoiled brat? (Serious headbanging here) Are background or solid backs the best?