What is this? I just found it in my tank!

[Laverna]

 

[Laverna]

It looks like a black and white worm. I watched it eating stuff of my LR.

 

[Laverna]

Paintbug provided this link ~ turns out this little guy is helpful.
http://www.reefkeeping.com/issues/2004-04/rs/index.php

 

[jessiesgrrl]

Hey, that's really interesting... the functional morphology section made it look like cuke...

Laurie