Despite advice not to do it, I bought a very nice RBTA from Rit at Atlanta Aquarium. He settled in to a spot at the back bottom of the tank. Stayed there for a few months. Now he’s everywhere. Every morning it’s like playing “Where’s Waldo”. This week he’s been creeping up the tank wall. Sat for a few days on my magnetic frag rack, today he’s in the top corner of the tank, right at the water line. Any thoughts on what to do??