Need Help with ID

[Cscultho]

Been reefing several years now and this critter is the first for me. I’m concerned about this guy because unexpected my flame angel ended up dead yesterday for some unknown reason. Is this a good guy or bad? Please help! Thanks

 

[Goaway]

Looks like a peanut worm. Do a search and see if it matches. The worms extended, so you wont see much of the body.

If it is a peanut worm, harmless and beneficial to any reef. Im not sure whatelse it could be.

 

[Cscultho]

Thank you! I will look that up.