Emerald crab eating/damaging Goni

[corey904]

I got this beautiful Goni from my lfs and for about a week it was fluffy, colorful and polyps extended until a few days ago I noticed all the polyps were closed so I made sure to test all my parameters but couldn’t find the problem until today......
An emerald crab that I’ve had for about a year decided to turn on me and munch on the little frag
The video isn’t the best but I can confirm I saw him snip at polyps and try to eat them
Or at least that’s what it looks like to me

 

[lapin]

They can do that

 

[Uncle99]

Not a surprise.
I removed every single crab about 5 years ago now.
Mysterious deaths have ceased....hum?