Need help With ID of this hitchhiker please!

[Reef Mamma]

Hi everyone, as with many we are new to Reef Aquariums. Just noticed this hitchhiker on my newer Zoas and wondering if anyone can help ID. Also are they bad ? Thanks

 

[tsouth]

A little baby feather duster. Harmless, and mega cute

 

[40g Nano]

It could be aptasia

 

[P-Dub]

Fan worm. They are generally harmless but can become a nuisance if they get out of control. They will multiply and die off based on available nutrients for them to feed on. They are passive filter feeders.

 

[P-Dub]

It could be aptasia

What is circled in the photo is not aptasia. And, thankfully, I don't see any in the photos.

 

[SHNICI]

+1 for Fan worm

 

[malacoda]

it's a feather duster/fan worm. Good overall. Typically don't last long if you have wrasses or other 'rock pickers' in the tank.

 

[SoCAL_Reefer]

Just moved to new home and had my 18 month old reef tank broken down and reset back up. That being said, the rock structure was completely rearranged and this evening I noticed 2 long flat white tentacle looking objects coming out of one of my rocks and then detached in the current about an hour later. Any clue what this could be? Harmless?

 

[P-Dub]

Haven't a clue....

 

[elysics]

Just moved to new home and had my 18 month old reef tank broken down and reset back up. That being said, the rock structure was completely rearranged and this evening I noticed 2 long flat white tentacle looking objects coming out of one of my rocks and then detached in the current about an hour later. Any clue what this could be? Harmless?

Are you sure that isn't superglue from the rescaping?

 

[SoCAL_Reefer]

Are you sure that isn't superglue from the rescaping?

No. None was used

 

[Mikedawg]

Maybe mucus from a coral; doesn't look like a "viable" organism. When my cabbage leathers shed I sometimes see something similar.

Assume already filtered out of your tank by now

 

[SoCAL_Reefer]

Maybe mucus from a coral; doesn't look like a "viable" organism. When my cabbage leathers shed I sometimes see something similar.

Assume already filtered out of your tank by now

Yes, it got filtered out that night

 

[vetteguy53081]

Very commonly found amongst zoa, looks like a hydroid to me. Looks like a tube worm but hydroid pattern. If you give it a gentle burst with a turkey baster, hydroid will remain whereas tube worm will retract.
Tube worm uses fan to capture food and is not actually a duster