I believe this is frogspawn which i have lots in various colors. Euphyllia divisa also known as frogspawn and the giveaway in identification is the presence of a flabello-meandroid skeleton.
Frogspawn coral tentacles are thick, lumpy, and long; with some branching into double skeletal or single heads, at the end of these tentacles are brightly colored tips. These polyps have a bubble-like outward appearance that resembles a mass frog spawn (frog eggs). The color of Frogspawn coral tentacles is usually brown to tan, green to yellow-green, and blue (rare), with cream, pink, lavender, or white visible tips at the end of the tentacles.
You have the pink version.
I also notice green cyano, not algae but a bacteria geberally triggered by too much light and elevated phosphate and nitrate (which you may want to test). I would blow it loose, siphon up the loose matter and reduce white light intensity a little.
Agree with Footgal on asterina star and for me a nuisance. They multiply like mice and as in my case can take down a colony of zoa in no time