Help me ID these worms?

[hresseguie]

No luck locally. Don't seem to be harming, just overpopulating. Dozens originate from this one spot on the bottom of my pipe organ. I've dipped the coral twice and they just stick around.
They can stretch up to 6 or 7 inches! That's a long way in my Fluval Spec V!

 

[hresseguie]

Well I attached a photo. .. don't see it here. Hope you guys can?

 

[hresseguie]

Finally got the photo!

 

[Miz40B]

Possibly Digitate Hydroids. Not 100% sure though sorry.

 

[hresseguie]

Thanks! I did just google those and the photos posted look very different from what I have, unfortunately. These are very long very fine white worms segmented with black bands. They are much finer than the standard spaghetti worms I have elsewhere in the tank. They also seem to be tightly grouped into a bundle or a colony under this particular coral. They stretch out into the tank but don't seem to be spreading elsewhere. Any other thoughts?

 

[cloak]

I think it might be a Terebellid worm.

http://www.lionfishlair.com/hitchhiker/hitchhiker.shtml

 

[rssjsb]

Yeah, I think it's a worm, too.

Digitate hydroids don't look like that - they tend to be upright in the water column.

 

[Betta132]

Those appear to be the feeler-tentacles of spaghetti worms.

 

[justthewife]

They almost look like mini brittlestars. Are you sure they are worms?

 

[Betta132]

I think those tentacles are a bit long to be microbrittles.

 

[hresseguie]

Ho everyone! Thanks for the responses. I'm still no closer though the terribelid may be as they all emanate from one spot, but don't seem to be spreading around the tank! They may stretch 5 or 6 inches, but don't originate anywhere else and it's been months now. I have some plain white spaghetti worms. They move around and spread! Paying an updated photo now.

 

[hresseguie]

Help!

 

[Betta132]

Don't worry about them, whatever they are. Things with tentacles like that are gunk-eaters and harmless. If you have a lot, you have a lot of gunk.

 

[hresseguie]

Thanks!