Anemone or coral or??

[NW Ken]

I had a 30 gallon fowlr at work that did have a few coral in its beginning. Mostly just gsp and pulsing zenia. I recently set up a 90 gallon and transfered the rock and sand to start the cycle. Nothing new has been added to any of my tanks in 2 years. Today I noticed two of these on two different rocks. They are about ¼" around. I've seen then all retracted in a ball, normal like the picture and what looks like tentacles extended before the lights come on. Thought?

 

[krollins]

1st:limpet(Most are good guys)
2nd: Ball anemone(actually mushroom coral, neutral)

 

[NW Ken]

Ball Anemone! Thank you! They look just like this one from another thread. Now, do I leave them or remove them?

 

[randomfishdude]

Ball Anemone! Thank you! They look just like this one from another thread. Now, do I leave them or remove them?

Leave it there cool lil dudes.

 

[krollins]

Leave them.