I have the weirdest thing I see in my tank once every three weeks or so. I don't have a picture because my daughter always has my camera. Anyway, it's about three quarters of an inch and growing. It's as thin as a mechanical pencil lead and is white with black stripes. It's back, when near the top of the tank, glows irredesent. It's front part jerks back about a quarter of it's lenght when it moves. Looks like a snake or eel but it's head isn't really defineable that I can tell. Anybody with a thought???