Please Help Identify Crab

[smartcore77]

New to Saltwater , Just Setting up my new tank. Could use a little help here
Noticed this little guy last night. Wondering if i need to pull him out and put him into my sump.

[tang daddy]

Is the crab a greenish colour? If it is it could possibly be a emerald, from the pics it looks similar as emeralds can get hairs on legs and body.

[GoFish]

I would sump it, or another alternative...
The claws don't look big enough to be an emerald

[toytech]

Spoon shaped claws indicate some type mithrax crab (emerald crabs are part of the family ) . I got a whole bunch of them from some liverock and they got to a decent size but where model citizens .

[Tyfighter]

I would sump it, better to be safe than sorry.. I learnt that the hard way with a hitchhiker crab and lost a royal gramma.

[Northern Reefer]

I think Female emeralds have smaller claws than males. Hard to ID without better pics. I had an unknown that came on liverock years ago and was a great freeby untill zoas began to diappear.

[Myka]

Originally Posted by toytech

Spoon shaped claws indicate some type mithrax crab (emerald crabs are part of the family ) . I got a whole bunch of them from some liverock and they got to a decent size but where model citizens .

Agreed.

In addition, only male Mithrax crabs get large claws. Females stay small.