What is this weird looking thing?

[Kristijan]

Hi everyone!
I haven't added anything to my aquarium for over a year, and today, I noticed this around my zoas. What could it be? It has green spots around it and white tip tentacles. To me, it looks like some anemone. It is tiny, around the same size as a zoa.

 

[AydenLincoln]

A ball anemone! Not harmful. I have some.

 

[EeyoreIsMySpiritAnimal]

It's a corallimorph.

 

[TnFishwater98]

They are a little harmful. They will spread and kill your snails and such. I had a few, now I have a few more

 

[Kristijan]

They are a little harmful. They will spread and kill your snails and such. I had a few; now I have a few more

They look quite cool.

 

[TnFishwater98]

They look quite cool.

They do look cool but so does a sheep in wolfs clothing.. lol… I was determined that I needed to get rid of them 6 months ago but now I’m over it. They seemed to stop spreading but I have them on all of my lower LR. They do great filtering things out of the water column but will kill snails . I have actually caught one sucking down a small bristle worm also….

 

[EeyoreIsMySpiritAnimal]

They look quite cool.

I have never had issues with these and have many in my tank.

 

[Kristijan]

Thank you all!

 

[TnFishwater98]

oops, just realized I posted this pic. This is not a ball anemone…..