ID HELP: All White Emerald Crab??

It kinda looks like a gorilla crab. If you can get to it, I'd remove it and keep an eye on it.
 
Aren't gorilla crabs more brown/beige? I caught him in a Tupperware for the night. I'm curious if he's reef safe or not.
 
Not reef safe. It's either a gorilla crab or teddy bear crab. They come in many colors. Toss it in the sump.
 
Any crab with big pincers (even male emeralds) are usually bad news. I try to get female emeralds because I've had males kill each other.
 
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