Something that look like polyps?

[Chrille26]

Hi! I have had this live rock established for quite a while and I havent noticed this until now. It looks like a small cluster of arms with a green ring around the head and long tentacles wavng in the current.
Anyone know what it might be? The size is really small, each arm is like the average vermetid tube.
Thanks for any ideas!

 

[Jeffcb]

Looks like Aiptasia

 

[Chrille26]

Okey, I have one or two visible aiptasia in my tank but they dont really look or grow like these. The ones in the first post have a bright green ring at the base of the head and skinnier tentacles.

 

[Jekyl]

Peppermint shrimp will sort it out

 

[Patryk1982]

Hi
I think it's aiptasia

 

[Jeffcb]

Okey, I have one or two visible aiptasia in my tank but they dont really look or grow like these. The ones in the first post have a bright green ring at the base of the head and skinnier tentacles.

I have always liked the way they look lol but they will take over unchecked.

 

[Chrille26]

I found a pic of very similar looking growth in this thread, where it is described as Colonial Hydroids, could that be what it is? I dont want to squirt aiptasia-x on these before I know for sure what they are.

COLONIAL HYDROIDS

i set my tank up 6 months ago with brs reef saver rock and two pieces of old fiji rock that i had that was fully cured and i had for years. i noticed that the old fiji rock has some hydroids on it i was wondering if the reef saver rock are infected as well. not sure how they reproduce. i was...

www.reef2reef.com

 

[NeonRabbit221B]

Since when does aiptasia have a green disk?

 

[Patryk1982]

Also, this fish will eat it and won't move the corals Chelmon rostratus

while this fish will eat aiptasie but there is a risk it will eat corals Acreichthys tomentosus

 

[KJ]

Hi! I have had this live rock established for quite a while and I havent noticed this until now. It looks like a small cluster of arms with a green ring around the head and long tentacles wavng in the current.
Anyone know what it might be? The size is really small, each arm is like the average vermetid tube.
Thanks for any ideas!

Colonial hydroids.

 

[afishbestservedcold]

do they retract into a tube?

 

[hsn izd]

i think its aiptasia the beautiful green color that they have made me guess about it
but a six-line wrasse or peppermint shrimp will kill it off

 

[Chrille26]

Thanks for all the replies! I do not think it is Aiptasia, I am now sure it is Colonial Hydroids based of other pictures online. I will just leave them be for now and hopefully they wont explode all over my tank.