I'm not sure what kind of crab this is, but it is up for grabs! If someone wants to buy it $5. My small fish such as firefish, chromis were disapearing and I finally found the culprit! Took me almost an hour to get him out of the tank, and into his little prison. Like I mentioned I'm not sure what kind it is, I accidentally ripped off one claw trying to get it. Here are some pictures, sorry not to good! Got him in the two way breeder at the bottom of my aquarium.