OK, so my two clowns... the past two mornings act very strange to me but it could be something I'm just new to also and something that's normal hopefully. I've noticed that one will go to the top of the tank for a good 5-10 minutes or so while the other one stays down on the bottom behind a rock and when the one on the bottom comes out the one on top will finally go back down and start swimming together. Is this something I need to be worried about?