Ball anemone?

[TnFishwater98]

 

[Udest]

I guess we'll have to wait for op to post more pictures

 

[TnFishwater98]

Can you tell both are the same?

 

[vetteguy53081]

funny did you know that ball anemones are a main predator of starfish?

Paracorynactis Ball Tentacle ‘Anemone’ is a Starfish Killer! | Reef Builders | The Reef and Saltwater Aquarium Blog

The Ball tentacle Anemone is a very unusual tropical reef cnidarian that has a more than few interesting things going for it. You would think that such an attractive critter would be a popular…

reefbuilders.com

I have two stars and an urchin - never had an issue

 

[Udest]

yeah i dont think the little guys devour everything i think in those cases its the bigger species.

 

[MNFish]

Kind of hard to get a good picture as it is hanging down a little but it is completely filled in with a repeating pattern

 

[MNFish]

 

[Udest]

yeah that is probably a galaxea then watch if it puts sweeper tentacles out at night.

 

[MNFish]

I actually found 4 or 5 more....

 

[MNFish]

Do galaxea spread?

 

[Udest]

you must be doing something right when they spread though they generally will be in an attached colony , is there anyway you can check if it has a stony skeleton?

 

[SamMule]

Those look like galaxea to me.
Also, aptasia top right of your last set of pics.

 

[MNFish]

I am working on the aptasia, but it is a long battle that I am not sure I am going to win....

 

[TnFishwater98]

I actually found 4 or 5 more....

sounds invasive whatever it is. How long have you had your LR?

Sounds invasive what ever it is....

 

[TnFishwater98]

How long have you had your LR? Did you get it from someone?

 

[MNFish]

Bought it dried about a year ago... however I did get one piece of live rock about 6 months ago from another aquarium.

 

[MNFish]

I found one on the gravel and pulled it out. It is stoney for sure... attached are some pictures. Going to wait for it to open and try to take some more.... I was wrong however I bet there are 20 in the tank....

 

[MNFish]

 

[MNFish]

So do I glue this guy to a frag plug or toss it... I am leaning towards tossing as the seem to replicate like gremlins but they are pretty cool looking.

 

[MNFish]

you must be doing something right when they spread though they generally will be in an attached colony , is there anyway you can check if it has a stony skeleton?

Yes has a stony skeleton