Pest or Pod or Bristle worm?

[Irishman]

Saw this on the tank at night. Quite a few of them actually even in the fuge.

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[Matt_Arian]

Little early to tell, but that looks like a euclid/bobbit worm. Not something you want in your general population tank, imho. But, if you can trap one or two, I will buy them off of you, as I'm gearing up for doing some specimen tanks for weird, off-the-wall reef animals like this.

 

[SynDen]

Looks more like a medusa or peanut worm, which would be a good one to have. Bristle worms dont generally have the distinguished head like that.