Yellow worm

[RyanN]

Got some live rock a couple of weeks ago and this guy was climbing the glass today. Any idea what this is? I removed it for now.

 

[ISpeakForTheSeas]

Got some live rock a couple of weeks ago and this guy was climbing the glass today. Any idea what this is? I removed it for now.

I would guess a Eulalia sp., probably either E. viridis or E. xanthomucosa; they’re predators of worms (including worms of the save species), barnacles, and gastropods (like snails, mussels, etc.) - it wouldn’t surprise me to find if they eat small crustaceans like pods or hermit crabs too, but I don’t think there’s any solid evidence of this behavior yet.

 

[RyanN]

I would guess a Eulalia sp., probably either E. viridis or E. xanthomucosa; they’re predators of worms (including worms of the save species), barnacles, and gastropods (like snails, mussels, etc.) - it wouldn’t surprise me to find if they eat small crustaceans like pods or hermit crabs too, but I don’t think there’s any solid evidence of this behavior yet.

Thank you!