I noticed one of my rummy tetras in my discus tank has a squiggly white thing on it's fin I took a photo to no success, but I visually enhanced the photo(lol)! Please take alook and see what you think. I think it's a parasite but then again I've never seen parasites on fish, so........Help Please! I tried to catch him to put him in a hospital tank but, couldn't catch him. I'll catch him later and seperate him til I indentify what it is. All my other fish look great and healthy all my levels are normal.

