My Betta fish has had white spot before and is still swimming around the tank with his normal energy. However, he's been bloated for about a month now and his belly has turned silver with this white stuff protruding from his anus? He still eats properly but i haven't seen much fecle matter in the tank? I have already done an extended treatment of esha 2000 but it doenst seem to have made a difference. The tank has regular water changes and tested at nitrates 20ppm and nitrites at 0ppm.