Is this Aiptasia?

Yx2016

New member
Hi all,

I need some help identifying something that has been growing for several months in my tank. At first I thought it was some kind of coral and I left it alone. Recently I came to know aiptasia and what's in my tank looks like it but not quite the same. It looks a lot skinnier than regular aiptasia. I did quite a bit of search on the Internet but couldn't find anything that looks exactly like what I have. It extends when light is on and detracts completely when light goes off. It expands in my tank but not super fast. It took over 2 - 3 rocks in several months. Attached are a couple of pictures. Should I get rid of it? Appreciate your help!
 

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Sugar Magnolia

Mother of Dachshunds
Staff member
RC Mod
It could also be colonial hydroids or clove polyps. Can you try to get a closer pic with the blue lights off and the flow off?
 

Yx2016

New member
Thank you guys for the input! Here are a few more pictures. I had a Xenia before but these ones seem to have much thinner branches. Still don't know for sure what they are. But it's good to know they are not Aiptasia!
 

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JohnL

RC Staff
Staff member
Admin
Thank you guys for the input! Here are a few more pictures. I had a Xenia before but these ones seem to have much thinner branches. Still don't know for sure what they are. But it's good to know they are not Aiptasia!

I think it's Xenia
 

reefing102

Who Am I Here?
Premium Member
With the mat like structure it does appear to be star polyp of some sort. Last I knew, colonial hydroids didn’t have the mat structure.

Star polyps can be invasive (many people keep them isolated to an island).
 
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