Just curious if there is any type of crab that I can put in my tank that will not pick on my fish or vis versa? Also, I have a choc chip starfish, urchin and coral banded shrimp and a couple turbo snails. ITs a 125 gallon FOWLR. Im still looking for things to add to the live rock and bottom of my tank to add color and eat the algea. A friend said he loves his crabs but before I tried them I just wanted to do my homework first.