Two of my three guppies have long brown threads emerging from their bellies. One of the guppies thread is about 1 1/2 inches long. Does anyone know what this is, or why it is caused?
I honestly dont know! I have never noticed it before today. It's a possibility I have also thought of, as the fish dont seem to be under any kind of stress and are eating fine. It's baffling! I'll just have to keep a close eye upon them I think.