What is this?

[Adam29c]

I just got some rock from a guy who said he just sold the light the other day. I'd say more like other week.

Anyway I just found these 3 little guys today. They are about 1/4" wide at least. Anyone know what this is?

 

[extremecoral]

Look likes anemone to me. Strawberry anemones?

 

[lsufiregal]

Ball anemone? I have them in my biocube. My son likes them.

 

[Adam29c]

Thanks. I think they are really cool. Now I can figure out how to make them happy.

 

[lsufiregal]

Mine haven't spread, but some people say they can become pests, but that hasn't been my experience. My son named one spike so I was relieved to find out they could stay.