I just got my new betta fish 3 days ago, and he was acting fine until today. Im thinking its SBD? He just floats at the top in a corner and doesn't swim much. I did see earlier he kept bumping himself into the wall and having a spaz attack in the back? Im not sure what was going on, I am totally new to Betta. Should I just lower the amount of food Im giving him and see what happens? Im just worried, because already he is like my baby ;P