Ok i think my balloon molly might have mouth fungas. Her fins seem to be designating and her mouth seems like something is eating it. She is a pretty new fish got her from pets smart. She is rather big compared to my other balloon mollies but i though it was just because she is female. I don't have another tank to put her in and treat her and the tank she is in now has crayfish and plants so most medicines cant be used. Does this sound like mouth fungus? If so what should i use to treat her that is safe for plants and crayfish? I know how to properly humanly euthanize her if that would be best. What do you think?