mushroom browning

[no_Wedge]

I have a mushroom that sits next to a rock, and when it fully expands shortly after it shrinks up and turns somewhat brown. I did notice small aiptasia next to it, and was wondering if maybe the aiptasia was stinging the underside causing this. Would this be logical?

[seapug]

yes, stings from aptasia will cause just about any coral-type creature to retract. The browning is probably a simple matter of the coloration appearing altered when the coral is contracted vs. expanded where it's tissues reflect/absorb light in a different way.

[no_Wedge]

ok time to pull out the aptasia x again