I caught a little hitchhiker crab last night. It is too small for me to take a pic of (size of a button), but it has one large claw, one smaller one. It is kinda pale tan color, with a couple of big dark spots on it. I caught it grazing on my LR, not sure what he was eating. Should I put him in the fuge, or just end him? Not sure if he might be a beneficial buffer. The only other inhabitants of my fuge are cheato and LR.