So I've had a 4 1/2 year old betta for quite some time now. Everyday whenever I make sudden movement he comes over to greet me but today when I went over to see him he didn't. It looks as if he got stuck behind a plant, so I moved it. But now his color looks off and he doesn't seem interested in food, but he still ate it when I put it infront of him. The readings of the tank have been the same since he's been in it so nothing is off. The tank is set to 80.. does this mean my fishy friends life is slowly coming to an end? Or is something truly wrong?