I need some help identifying these bug.

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Beck

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Anyone know what these are? Are they good or bad?
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Here's a video. Yes, it's normal speed.
 
Those remind me of syllidae worms, take a look into that and see what you think. Most are harmless detravores. Apparently there is some misinformation out there. There are also worms similar to appearance of the syllidae, which are usually harmless.

And yes, I was under some bad impressions of them as well. More studies were done, so I'd be much more comfortable now keeping syllidae.
 
Bristle worms, unknown species though

The related firewoms have toxin, regular bristles just eat garbage and help your CUC as anything that digs will eat them too
I second this one!! Unknown species though. Kinda looks like a Lepidonotus spuamatus. There is over 10,000 species of Bristle worm.
 
I second this one!! Unknown species though. Kinda looks like a Lepidonotus spuamatus. There is over 10,000 species of Bristle worm.
To clarify for OP:

They are likely safe, there are too many species of bristle (likely many more yet to be discovered too!) to properly ID them, there are only a handful of true pest species and it’s typically easy to ID them
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%

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