Invert ID

votek

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Feb 20, 2003
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There is a dark colored slug-looking invert crawling on my glass. It looks black and greyish with small white tenticles, almost like spines that it appears to move with. It is worm-shaped and VERY slow moving.

Any ideas?
 
Yeah probably a bristleworm. There's alot of species and probably many dozens in your tank. Good things. Help stir up the sand bed. There's a good article right now over in www.reefcentral.com/ that you can check out if you want to learn more.
 
I've looked in every book I know and I've nor found a picture of what Im looking at.

Its NOT a bristleworm. Not only does it not behave like one, but it does not have the same characteristics.

THe worm is very fat, probably 1/4 of an inch in diamete. The white tenticles are not small and planced in even rows. They are randomly asorted on his body and they are long, probably nother 1/4 inch in length. THey are white and fade to black down on the body.
 
It's some kind of Nudibranch. I have one in my tank that is kinda greenish-brown, spiky and crawls on the glass. Probably some long lost twin brother =)
 
I'm with Corax, it's probably a nudibranch. What does it eat?
 
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