What are those antennas? (Setosa)

[Moonfruit777]

Hello,

a friend of mine has a setosa and would like to know about these little antennas sticking out of the coral.
They move in the flow and retract on contact, like a feather duster.

Are they any reason to be concerned or to dip the coral?
Could they cause the polyps to not extend fully?
Would any fish (e.g. banana wrasse ) eat them?

Thanks a lot in advance :)

 

[Lovemyreef2015]

I would say coral barnacle. Harmless

 

[Moonfruit777]

Thanks @Lovemyreef2015 !

To my understanding coral barnacles have a full fan of antennas.
The ones on the Setosa all have exactly two antennas (V- Shape).

Do they still classify as barnacle?

 

[Lovemyreef2015]

Looking more closely it could also be spionid worms. Also harmless.

 

[Sebastian the Lionfish]

I'm having the same issue with this if someone can give some more information

 

[Jonify]

Same ... two little v-shaped "antenna" sticking out of several of my SPS/LPS

 

[Glass Algae]

Do they ever feel around Independantly almost "dumbly" do they have a little tube they come from? Ever see it collecting tiny tiny pieces of substrate to add to its tube?

Cause that's what my spionid worms look like

 

[Jonify]

Do they ever feel around Independantly almost "dumbly" do they have a little tube they come from? Ever see it collecting tiny tiny pieces of substrate to add to its tube?

Cause that's what my spionid worms look like

It's hard to tell, they're very small .. looks like two pieces of hair. They jut out of the soft tissue, it looks like, so no substrate around ... they do retract when you pass something by it.

 

[Glass Algae]

It's hard to tell, they're very small .. looks like two pieces of hair. They jut out of the soft tissue, it looks like, so no substrate around ... they do retract when you pass something by it.

They look darker colored. Do they happen to look like thin white threads with no segments. Very smooth?

 

[Jonify]

They look darker colored. Do they happen to look like thin white threads with no segments. Very smooth?

Yes, thin, white, smooth, like a very, very fine piece of hair. But two of them, in a V.

 

[Glass Algae]

Yes, thin, white, smooth, like a very, very fine piece of hair. But two of them, in a V.

Let me see if I can get a Pic or vid of mine for identification.

 

[Glass Algae]

Let me see if I can get a Pic or vid of mine for identification.

Of course they're not out right now. Will post when they come out. But I'd check out pics of spionid worms and see if it matches up. They seem to come out of little tubes for me and always seem to be in pairs in a V.

 

[SeaJay]

Anyone ever get a solid ID on this? I experimenced the same thing and couldn’t figure it out. I’ve seen two little antenna sticking out of a vermetid tube before, but these were much smaller. It’s possible there’s a vermetid and his tube is hidden within my zoa.

 

[Mycoplant845]

I have one on a snail and one below a favite

 

[Jcascioli]

Any update on what these are?? I have a few, mostly on SPS and my lepto..

 

[vetteguy53081]

Thanks @Lovemyreef2015 !

To my understanding coral barnacles have a full fan of antennas.
The ones on the Setosa all have exactly two antennas (V- Shape).

Do they still classify as barnacle?

Those appear to be that of a spinoid worm which uses antennae to capture food