What is this worm? Is it good or bad?

[Tiansho]

Does anybody know what is this? Some kind of worm?12689

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[SteveCGY]

Looks like a bristle worm. They are good clean up crew.

[RDNanoGuy]

Yep definitely a bristle worm.

[michaelis88]

bristle worm, can be bad or good. this one is unharmful to most corals. but it looks so ugly, I usually try to catch them and throw them out

[Tiansho]

Thank you guys


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