Please help me identify this

[Keelin MacDonald]

Hello everyone, I recently picked up this zoanthid frag from my lfs the day after it came in, wild caught from Vietnam. I noticed this small black spiny looking thing and asked the lady if she knew what it was. She said no, and I thought it could be exciting so I skipped dipping for now. The day after I put it in the tank, all the spikes extended into these hair looking things as is seen in the pictures below. They all seemed to have an egg or some type of cell that was released at the end of each hair.

I have two tanks set up that I am going to be switching everything between until I am algae free, so if I need to dip all my corals next tank switch to get rid of these it doesn't concern me too much. I am very interested in different marine 'pests' and other hitchhikers and would like to know about this one. If you have any insight please share.

Thanks!

 

[CasaReefer]

bump

 

[MTBake]

I'm not sure what that white thing is.

But I do believe I see a couple aiptasia. I circled them in orange here;

 

[Keelin MacDonald]

I'm not sure what that white thing is.

But I do believe I see a couple aiptasia. I circled them in orange here;

That is the same thing as the one on the left. The light makes them look white, but they are dark grey/black.

 

[Keelin MacDonald]

I took a video for a bit better of a look of how this thing is acting.

 

[DSC reef]

Looks like a type of sponge

 

[samnaz]

I agree it looks to be a sponge

 

[MTBake]

That video really helps see it. I'm also thinking a type of sponge.

 

[vetteguy53081]

I see sponge and one possible aptasia.