Receding mushroom disk

[Jon F]

Sold to me as Blue mushroom. Part of the first intro to my new tank at the end if January.

It looked good on introduction and grew nicely, covering half the frag plug to start with and completely covering it until today. Looks like it is receding on the lower half, iis it fading or is something eating it?

I have a peppermint shrimp, 3 hermits and 8 snails. Only fish is a Talbot damsel, they have all been in for over a month with no issues.

If it's the peppermint, I can live with that, it has completely removed my aipstasia problem.

Before

After

 

[Saltyreef]

odd. my blue mushrooms could live through a nuclear holocaust. ive been trying to kill them for nearly a decade.
kinda weird how its sucked into that frag plug. have you tried to lift up the skirt to see if theres anything underneath?

 

[Jon F]

odd. my blue mushrooms could live through a nuclear holocaust. ive been trying to kill them for nearly a decade.
kinda weird how its sucked into that frag plug. have you tried to lift up the skirt to see if theres anything underneath?

Yep, looked all over the plug, nothing i can see

 

[Sharkbait19]

Being more related to anemones than actual corals, mushroom corals tend to move, shrink, or recede when they’re stressed, much more than a coral would. It is either adjusting to you parameters, or just being a mushroom coral.