Fish acting erratic not eating?

needanswers1

New member
One fish died the other day and there were black threadlike hairs floating around, so i set the fish up in the tank. Goldie had white threadlike hairs on her. I think it was body fungus and i treated with coppersafe and maracyn. Goldie has not eaten in three days and after putting the second dose of maracyn in, started swimming around like crazy after she had been very still. What is wrong with her? How can I save her?
 
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