Fire worm or Bristol.

[cap11885]

Id plz.

[SereneAquatic]

The big one does NOT look like a bristle worm... The little one below it looks more like one but can't see enough of it to tell. I would definitely remove that bright red one. I've never had a fire worm so I can't say for sure, but he is different.

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[Sk8r]

https://en.wikipedia.org/wiki/Bearded_fireworm#/media/File:Bearded_Fireworm_(Small).jpghttps://en.wikipedia.org/wiki/Bearded_fireworm#/media/File:Bearded_Fireworm_(Small).jpg Looks like a bristleworm to me. Google hermodice carunculata. That's a fireworm.

[cap11885]

Yea when googled it doesn't look like the pictures.

[rjjr1963]

Are fire worms bad?

[cap11885]

yes. opportunistic and predatory. will eat whatever they can. coral, invert, small fish.