Round worms

[Sarra]

There are little critters that look like leaches in my tank. They're tiny, only about 2 mm across, 2 cm long, and flexible. They are tubular, and will pull inside themselves to move under my sand. Greenish in color, with some black, they seem to like a lighter front corner of the tank.

Any idea on an ID?

[Almondsaz]

Really need a pic if you can get one to help with the id.

[catpicklesdog]

Sounds like flatworms to me. Try this link (http://www.wetwebmedia.com/flatworms.htm).

[Sarra]

I looked through the flatworms on WetWebMedia and it looked NOTHING like them.

Last night I took a close look at it, it has teeth on it's 'head'. O_O

[fishieness]

perhaps a peanut worm?
Can you describe the teeth?

[Sarra]

Tiny. They are retractable, or it can loop itself over it's head.

it seems to hang out in one spot, still trying to get batteries for the camera.

[Charlesr1958]

Please check the worm section within the link below

A Hitch Hikers Guide to the Reefs (http://home2.pacific.net.ph/%7Esweetyummy42/hitchhikers.html)

Chuck

[Sarra]

Nothing even close to what I have in my tank.

I'm going to attempt to siphon it out to see how big it really is, there's just a tiny bit that comes out, above the sand. I wonder if I'm j ust seeing a tiny part of the worm? I don't really want to remove it if it's beneficial, though. =\

[Reefscape]

Really need to see a picture of this to give a correct ID. Not really worth stabbing in the dark or making second best guesses....