I have a blueish green male betta, I got him a year ago, and he seemed to be full grown at the time. So I am not entirely sure of his age. He is usually very active, but he hasnt been for about 3 days, just floats on his side at the top of his bowl. If I tap on his bowl he will float normal and swim around for a while and then go back to floating sideways..he has had a slight loss in appetite also, but will still eat. When he does swim its not sluggish or anything. I am not sure whats wrong with him, is he cold? Or tired? swim bladder? help, please.