Pest ID..bristle worm? Good or bad?

[Reeferparty]

Is this a bristle worm?


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[RadagastWizard]

I had these before and they were totally harmless they would eat leftover food and tunnel in my sand

Btw what kind of live rock is that it's nice!

 

[Reeferparty]

I had these before and they were totally harmless they would eat leftover food and tunnel in my sand

Btw what kind of live rock is that it's nice!

That's actually my GSP mat that they're crawling on. Polyps are just closed since lights are off.

 

[snorvich]

Bristle worms are good.

 

[Cliving1]

Bristle worm, thats a good one!