What is this?

[Buckyez]

I found it in my tank. I thought it was just food flake, but then it started to move. I caught it and put it in my sump tank. It look like a stingray with spots. It's about the size of a quarter. So far everything in my tank is fine. What is it? Should I get rid of it? Please let me know.

http://img251.imageshack.us/img251/1415/dscn1554xs2.jpg

--Bucky

[macronut]

looks like planaria to me.

[Paintbug]

that is a Polyclad Flatworm, not reef safe. they are all considered predators and should be removed.

[Buckyez]

Thanks. I'll get rid of it.

--Bucky