
My small green sunfish has developed a problem with his bottom. The area at the body is red and looks as though it is sprouting a thin long brown growth and with white split ends. I tried to take the best pic i could. Water test this morning showed 0 ammonia, 0 nitrites and 20ppm nitrates. Does anyone know what this is or how to cure it? How lethal is it and can it harm my other fish. i have 3 green sunfish.


