03-10-2011, 07:16 AM
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The tuft on the bottom ray does look like fungus. However, I've read, on another forum, that most of what looks like fungus on fish is caused by bacterial problems, because true fungus only grows on dead cells. Anyway, I'd try Melafix. I've found that it usually gets rid of tufty things, as well as helping with fin/tail issues. If that doesn't work, or if it gets worse, then you might want to try Pimafix, or something else for fungus.