When I took out my LR from my 55gal tank I got about 30pcs of this crab. They were fun to watch for a while but when you realize they were scooping out coralline algae? Time to take them out!!! :lol:
When you see it eating sumpin it shouldn't you put it in the sump
Most rock crabs will eat anything (including fish and corals) if their natural food isn't available. It takes careful observation to determine what it eats and if it has a good enough supply to keep it from looking for a new menu item.