My 10 gallon tank finally finished cycling, so I got to relocate Amadeus into his new home. He seems really happy and interested in it, exploring all of the live plants and swimming through the bridge... but one problem. He is flaring a lot at his reflection on the back of the tank. I taped up some paper, hoping that it would cut the reflection, but he is still flaring quite a bit. Is there anything else I can do to cut the reflection? I just don't want him to get exhausted or stressed out by having to defend his territory all the time. Thanks!