My arrow crab has become very protective over my Condy Nem. Earlier, while the Nem was busy being curled up and using the bathroom, a red leg hermit crab came over and got a little too frisky with trying to eat prices off the Nem. Arrow crab didn’t like this, so he grabbed the rim of the hermits shell with one claw, pushed the crab over, and used his other claw to grab the actual crab and pull it out of the shell. He then proceeded to kill the crab, rip the back of it open, and eat every single piece of meat inside the crab.