Is this a type of anemone?

[Drewjharper1900]

I cant get a picture of it becuase of where it is in the rockwork but i have two small anemone type creatures in my live rock. They're about the size of a quarter when they are open and close up during the day. They are purple with little tentacles that have white tips. Does anyone know what they are? there not multiplying or getting really big or anything so there not a nuscence. I just cant figure out what they are.

[Drewjharper1900]

And its not apitasia. Ive had those in my tank and killed them off.

[bradleym]

Look up ball anemone. That's my first guess.

[Drewjharper1900]

You're right. Ball anemone. Found this pic. Looks exatly like it.

175959

There pretty harmless right?

[bradleym]

IMO yes. Some people have had them get over 2 inches in size and reported they were dangerous to fish then but mine stay small.

[cichlidconvert]

I have a ton of them in my BTA tank and have yet to be a problem. And really i think they look kinda cool in a way.