Lowest price:$9.99Description: The Arrow Crab name is derived from the shape of its head and body. It has notably long legs and the males can be much larger than the females. It also likes to hide in small crevices and caves. The Arrow Crab may also attack small slower moving fish in the aquarium. As all crabs are opportunistic feeders, ensure that the Arrow Crab has sufficient food as it may pick on polyps and corals.