What the heck is this worm thing and is it harmful!?

[mihkey]

I just recently got an anemone, a fancy brittle, a diamond goby, and a Koran angelfish. Today I was looking around to see if the brittle moved and I noticed this nasty looking worm that came out when the light was off, and crawled back into a hole in the rock when the light turned on. I guess there was a couple but I only saw one. I will get a better picture in a minute but this is all I got.

 

[themcnertney]

Probably just a bristle worm. They typically come out when I feed and at night in my experience. Good clean up member. Don’t touch.

 

[Lemons]

Looks like a bristle worm, they get a bad rep for their spines. They eat detritus and leftovers, so as long as they arent in apocolyptic levels in your tank they're a good thing!

 

[Gtinnel]

It’s hard to tell from the picture but it looks like a regular bristleworm to me also.

 

[Lavey29]

There's probably a lot more too

 

[jabberwock]

Yeah, a worm in your tank does not really constitute an emergency...

You probably have a lot more than 1.