I have a Neon Tetra I found on the surface on his side with some kind of clear or white fungus covering the whole tail region. The tetra can no longer swim very well but is still alive. I moved the fish from my tank to a separate container. Would API Pimafix help with this? I had a Rummy Nose Tetra about a month ago with a thick white hairy fungus on the side and this tetra unfortunately did not make it after moving to another container. I am not sure if it is the same fungus. None of my other fish seem effected. Thanks.