Is my coral dying??

[Dymond]

I bought this yesterday and in the store it seemed fine. Once I got home it stopped opening and half of the “branches” are green and some are brown. Idk if it’s dying or growing. Side note: when I got home I noticed a tiny starfish in it. Not sure if that could be a problem as well.

 

[lmforbis]

It isn’t obviously dying yet.
if you don’t have some very intense lighting it will die.