This is a Bristleworm... but is it a Fireworm?

[myreeef]

I have at least 5 of these in my sump and at least 2 in my main tank. I have not seen any of them in 3-4 weeks the tank is now almost 5 weeks old. They all ranged from 2 inches to 6 inches long.
This one in the picture is about 5 inches long, but you can only see about 1 - 1.5 inches of him. I took this picture in the dark using a flashlight.

 

[investigator1]

It is definitely very suspect of one. The only way to tell for sure is try and feed it a coral and see what happens, DOH! I didn't mean that.