I put a plant in and he seems to be going in it a lot and resting on the leaves (although I can't see how they would support him) and he rests on the bottom quite a bit. Plus when he does swim about, he flares a LOT. I'm assuming he can see his reflection but there's nothing (no background, etc) on any sides of the tank so there's not much I can do about it. He also flares at me a lot but it doesn't hurt my feelings or anything. Just wanted to make sure it's not going to wear him out too much.