Hairy mushroom coral stings?

[DonJuanAntwon]

do hairy mushroom corals sting? I have one encroaching my microlord and the micro looks like it’s receding (showing skeleton) exactly where the hairy mushroom is touching. I guess it’s time to move them apart.

 

[mangus]

They are not agressive but they can definitely harm other corals that they are touching.