The day before Yesterday I noticed that my beta fish simba was swimming like odd. Like he doesn't swim smooth he kind of jerks. So I got worried but he was doing ok other than that. But yesterday I noticed he would swim and then stop and out of no where start sinking to the bottom. He doesn't want to eat anymore and he doesn't even play around anymore (used to follow my finger and jump) so idk what's wrong with him since he doesn't have any spots on him or anything different on him. But I did notice one of his pectoral fins isn't moving as much. Please help I'm really worried. Il post pictures when I get home.