Red thing...centipede?????

[SEA SALT]

We have this red worm-centipede looking thing coming out at night of a rock..can anyone identify please. Also is it harmful to my tank, it is in my 2.5 gallon with a mantis shrimp. Thank you for any help.

[chameleofreak]

Just a bristleworm. Harmless scavenger.

[chimmike]

your mantis hasn't eaten it yet? odd.

[wilsonreefs]

X2 on bristleworm...

[khull]

X3 on bristleworm