help with ufo's

[California Ron]

Have 2 of each of these growing on live rock, are they good or should we be afraid?

 

[Navarre]

The right hand side looks like a tiny sarcophyton. (leather mushroom) and the left appears to be a brown polyp... possibly a majanoe anemone (bad). Some might say its an aiptasia (bad) but the polyps look too rounded for that.

 

[California Ron]

Thanks, I have been keeping an eye on the browner one's of the 2 thinking they were majano's they do tend to roam around the tank, the whiter ones dont seem to move anywhere and open and close with the light.

 

[Navarre]

If its mobile then its almost certainly an anemone of some description. I would be inclined ot watch and see what it grows into before wiping it out. I had a similar anemone appear on my liverock and i was told it was a majano and should kill it.. i wasnt convinced and held off being executioner... it turned out to be a baby bubble tip anemone and now resides happily in Aquascapers tank (another member on here)