What are these?

[danam770]

>

class="gc-images" title="DSC_0734.jpg[/IMG] style="max-width:400px" /></a> This life form showed up in my tank recently and continues to appear on the glass from time to time. There is some yellow stuff with filaments on a nearby rock. The thing looks like a worm with long, thin tentacles. Any idea what it can be?

 

[budsreef]

It looks like a spaghetti worm. They are good for eating detritus.

 

[budsreef]

Probably more accuate to call it a medusa worm, but still a good detritus eater.