?? on recently I.D.

[dondemi]

I recently had a hitchhicker ID as a hidden cup coral & found a few more
Is it harmless or will it bother other corals?
Is it a filter feeder or should I try to give it a little something to eat?
Very new to SW & any help is appreciated - There is always something new to learn!

 

[renogaw]

it is non photosynthetic, but will eat food out of the water. i used to give em some mushed up seafood, but they seem to live without it.

 

[spanko]

From what I have read they like the shade and feed from whatever they can grab from the water column.