ID... Rock Crab?

[Coroner47]

I picked this crab up today for my hitchhiker crab tank. Does anyone know what it might be. It's about 1" 1/4 in diameter & has a distinct pattern on its lower back. It seems very docile like the rock crab i already have in the tank & yes he does have black claws. Its underbelly is also covered in what appears to be hair, sort like a spider.

 

[mscarpena]

Looks like a rock crab to me.

 

[BEASTIEPENDENT]

Hi there

The hairy things You see below are the female pleopods which in true crabs are not any more used for swimming but on which the eggs are attached.

It is a Xanthid crab, on first look it resembles me of the genus Chlorodiella, maybe C. nigra. Does it has spoon-like claw tips or sharp ones (the color is no indication for "good or evil")?