I got a Kole Tang about 2 months ago. Besides from a couple misunderstandings with my foxface, he has been a good resident. This week, in the evening, I noticed him tail slapping the glass over and over again. I realized that he is attacking his reflection. If I turn the room lights on he stops. If I put my hand on the glass he stops.I think it just started recently because now the room is dark at night, while before there was sunlight in the room for longer. That's why if I turn the light on, he can't see the reflection as well.What should I do? Will he eventually outgrow this? He has a couple marks on his nose, but I'm not sure if it's from that.