Fire worm id

[Calappidae]

Is this truely a fire worm or regular bristleworm?

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He stretches out to about 8 inches in length.. I got five more just like him..

 

[GerritM]

Eurythoe sp., harmless scavengers.

 

[Calappidae]

What characteristics does a fire worm have exactly compared to a bristleworm? (other than venomous).