I have had my betta named Arthur for 7 months. I've recently have upgraded his tank from a 3.5 Gallon to 5 Gallon tank.I used the bio sponge from the old tank filter. He has been in his tank for about 2 weeks but all of a sudden he has started to jump, and going to Conners of the tank and swimming off Rapidly, taking quite a few of naps and hovering over the bottom. There is no signs of bloating, Popeye, swim bladder and ich. I do weekly water changes, Is he going to be ok or sick? is it normal? why does he jump so frequently all of a sudden? Im very confused.