This is my brother in laws' Queen angel. He has had it about 3-4 weeks roughly. It began with a very small white patch on it's tail and has spread to what you see in the picture. Dr.'s F&S said it sounded like ich and he treated with copper 12 days ago and has not had any improvement. He says the fish is still eating really well. It looks like a fungus. What is it and how should it be treated?
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