WHAT IS THIS?

jenfiandra

Community Member
View Badges
Joined
Feb 23, 2026
Messages
30
Reaction score
45
Location
Braselton, GA
What state or country do you live in
Georgia
Rating - 0%
0   0   0
SOOO…morning feeding this morning and I see this thing zooming around the entire tank. I was able to get a video before it burrowed down in the sand. I have a hard time thinking this can be anything good!
 
I am unsure but it looks just like a millipede for those who cant really see the video too well
 
I’ve seen other posts/videos and members were saying it’s a bristle worm. Not my knowledge but seems to be the consensus with shape and movement like that.
 
Looks like a epitoke, which is a reproductive stage for polychaete worms (bristle worms/clam worms) that causes them to be able to free swim like that.
That. I had forgotten that word. Creepy stuff in my opinion.
 
Along the lines of what is this, anybody know what this is? Looked at it under the microscope and it looks like it has finger like protrusions and looks like it is breathing. It is reproducing too as there was like 2 of these in my sump last week now I see like maybe 10 or 12
 

Attachments

  • 20260614_113455.mp4
    7.6 MB
SOOO…morning feeding this morning and I see this thing zooming around the entire tank. I was able to get a video before it burrowed down in the sand. I have a hard time thinking this can be anything good!
bristle worm
 

WHAT’S USUALLY THE FIRST CLUE THAT SOMETHING IS OFF IN YOUR REEF?

  • A fish’s behavior or appetite changes

    Votes: 11 15.5%
  • A coral looks different or stops opening normally

    Votes: 44 62.0%
  • Water clarity or surface appearance changes

    Votes: 10 14.1%
  • Equipment sounds or flow seem different

    Votes: 7 9.9%
  • A test result catches my attention

    Votes: 14 19.7%
  • Algae or other growth starts changing

    Votes: 14 19.7%
  • I usually notice when the problem is already obvious

    Votes: 3 4.2%
  • It depends on what’s going on

    Votes: 13 18.3%
  • Other (Post in the comments)

    Votes: 1 1.4%

New Posts

Back
Top
Home
Post thread…
Market
What's new