Aiptasia or Zoas?

[DjPhato]

Hi all, could you please help me identifying these invertebrates?
Picture 1: I spotted them on one of my recently received live rocks and tank just started cycling so they might be not so happy and would not open much.
Picture 2: I also spotted another one on a different rock that unfortunately retracted and it really looked similar to aiptasia. I was not able to take a picture before retracting. What do you think? Thanks!

 

[Reefing102]

First looks like zoas or palythoas. Second is hard to say

 

[griss]

First looks like zoas or palythoas. Second is hard to say

Agree on Shane’s assessment.

 

[DjPhato]

Thank guys…the unidentified is still closed and not extended, as soon as I can I will take a better picture

 

[DjPhato]

Ok i was finally able to take few more pics. It closes very quickly, not sure if aiptasia behaves like that, I never had before. What do you think? Thanks

 

[Reefing102]

I’m hesitant to say Aiptasia because of the textured stalk. Though it does appear you have some sort of coral in front of it too. I’m honestly not sure

 

[griss]

Yeah, I don’t think Aiptasia but, I’m not sure what it could be.

 

[DjPhato]

Yeah rocks are full of some small pieces of corals, lets see if some resuscitate when i start with lights.
As for the aiptasia-like, i am also very unsure and wanted to ask you guys, should I just treat it as aiptasia to be on the safe side? Franks F aiptasia?

 

[griss]

Yeah rocks are full of some small pieces of corals, lets see if some resuscitate when i start with lights.
As for the aiptasia-like, i am also very unsure and wanted to ask you guys, should I just treat it as aiptasia to be on the safe side? Franks F aiptasia?

Personally, I’d leave it be and see what it becomes. I truly do t think it’s aiptasia.

 

[Reefing102]

While I don’t think it’s Aiptasia either, if you have a small chisel, you could try to chisel it off and keep it separate to see what it turns into

 

[HONESTINJUN]

Ok i was finally able to take few more pics. It closes very quickly, not sure if aiptasia behaves like that, I never had before. What do you think? Thanks

What an unexpected blessing. It is a blessing, right? If they start to get to be too dense, will you introduce a control species?