What is hosting my live rock?

[tbrown]

Most living things with any degree of autonomy will close if agitated. Clams, snails, zoa polyps, my eye, polyps from pretty well any other coral, normal nems, aiptasia nems, hydroids... etc.

My first thought as I was reading the first line...

 

[Rocks reef]

I am resonating the colonial hydroids living amongst 'other' tubes. To me, I am not doubting any one else, they appear to be a 'feather duster' type tube. Vermatid are usually darker and smooth, those appear lighter and layered which how a feather duster grows its tube. Anyway.. I digress.

 

[Rocks reef]

I also want to add, the tube on the hydroids will be leathery, not hard. It is called a thecal sac.
Colonial hydroids, also known as digitate hydroids, can be controlled with a fringeback nudibranch.

 

[X-37B]

Just took this better pic.

 

[Rocks reef]

Beautiful Gorgonian @X-37B

 

[Crabs+Shrimps-69]

I have them in my nano. These type don't bother anything at least in my system. And this rock was from a tank breakdown from the lfs.
Mine are greenish.
Zoom in for a better view.

Had/have some of the green ones in my tank as well.
I didn't realise how similar my ones looked compared to @djfishyy's hydroids until I saw the photo of yours.

 

[Crabs+Shrimps-69]

I concur Dr. I had lots of these in my 36 gallon that I shutdown. And those are their own tubes. They will likely start showing up in other places of the tank if not quickly taken care of, if desired.

Anything that can be done to control or eradicate them with buying nudibranch?

 

[X-37B]

Anything that can be done to control or eradicate them with buying nudibranch?

I just glue corals over them. So.far none of my corals are bothered by them.

 

[Reefer Matt]

Anything that can be done to control or eradicate them with buying nudibranch?

I’ve never purposefully owned nudis, so idk. What worked a little bit for me was manually scrubbing and siphoning, and putting epoxy putty over them.

 

[X-37B]

Beautiful Gorgonian @X-37B

Thanks here's my golden in the same nano.

 

[lwien01]

I got new live rock at my local shop. I saw what looked like a dead coral on it and grabbed it. Now that it is home, these tubes are indeed hosting something. Not all of them, but definitely some.

I have been told they are from dead vermitid snails, that it is all aiptasia, and that it is from dead clove polyps. Now ai have no idea what to think.

There is definitely something feathery inside the tubes that retracts down into them when disturbed. I've only seen aiptasia free standing with no tube. Can aiptasia host leftover tubes? Are these aiptasia or some sort or tube worm? Thanks

 

[lwien01]

I’ve never purposefully owned nudis, so idk. What worked a little bit for me was manually scrubbing and siphoning, and putting epoxy putty over them.

Those are Hydroids like aiptasia
They can definitely inflict damage by stinging corals. A Copperband or Burgess butterfly would clean them up in no time

 

[Rocks reef]

Anything that can be done to control or eradicate them with buying nudibranch?

Pull the rock and scrape them off...blow torch...muratic acid....pitch the rock....plenty of options.
Ive heard of some medications working, but with anything it is hit or miss.

 

[Rocks reef]

Thanks here's my golden in the same nano.

Perfect example of a Golden Rod Gorgonian! I'm jealous @X-37B !!

 

[Crabs+Shrimps-69]

I just glue corals over them. So.far none of my corals are bothered by them.

I’ve never purposefully owned nudis, so idk. What worked a little bit for me was manually scrubbing and siphoning, and putting epoxy putty over them.

Pull the rock and scrape them off...blow torch...muratic acid....pitch the rock....plenty of options.
Ive heard of some medications working, but with anything it is hit or miss.

Thank you, I'll keep this in mind if they start becoming a problem.