Betta acting strange
For the last couple of weeks i’ve been treating my tank for fungi/parasites after i noticed some of the fish flashing/itching. I have 7 mollies, 5 danios, 1 swordtail, 2 corydoras, 3 kuhli loaches and 3 female bettas, 1 of which developed what i think looks like velvet about a week ago. A couple of days ago i noticed this betta started darting across the tank or splashing at the surface every now and then. I’m not sure if this is linked to whatever the fungi or parasite is on it’s side but I’d love to know what you guys think this could be?
At the moment my PH is about 7.7, ammonia is about 0.1, and nitrite is about 0.2. I do 30% water changes monday and thursday and change the filters about once a week. I have a 64L tank.