Pls help ID crab hitch hiker

[smt9595]

Started a nano tank, picked up a piece of live rock from LFS. Next day I noticed a crab tucked away. Not sure if it will be safe with a fish or coral. Please help ID it and thank you in advance. Got some good pictures and a video.

 

[gentlefish]

It’s a young specimen. I think it wil be a gorilla crab considering the darkened claws. Considered opportunity feeder/not reef safe. Do not reproduce in tank. (Put in sump)

 

[Strangewaterchange]

+1 gorilla crab looks like hairs on it as well