Crab ID

[Timbo]

Just saw this crab for the first time in my tank that has been up for more than two years now. I tried to take a picture of it, but he ran into rock work before I was able to get a shot. It had the coloring of a porcelain anemone crab, but was the size of a large emerald crab. It's body was totally white with brown spots/bloches. Do porcelain crabs get that big?

 

[Deanos]

Repeat question

Reminder: This forum is not just for asking questions, it's also for finding answers

 

[NYPDFrogman]

look like this?
if so very bad and very destructive that guy was the size of an emerald crab