My betta has had sbd for about a week. I've fasted him, tried to give a cooked pea but he wouldn't eat it (I haven't seen him eat anything) gave him an Epsom salt bath, I keep his tank at 78 degrees, but he still looks awful. His fins are deteriorating and he can't swim upright. Despite all of that he is still very active. As far as i can tell he is in no pain and isn't stressed but he just looks so sick. Any advice?