I was feeding my tank the fiftymillion foods I havefor everyone, and of coarse they all came out to eat, even something I've never seen before.....it looked like a cross between a gray centapeed(sp?) without all the extra legs and a pill bug. He's about a centimeter long and swims fast, real fast but mostly walks along the bottom, and likes to hide under the our live rocks. I called the store where we bought our live rocks and coral and they said they had no idea what it could be! Have you guys scene this before? Is it bad? :help: