The Arrow Crab uses its very long legs to walk over the reef and climb over almost any obstacle.
Behaviour: It rarely bothers corals, however, the occasional large specimen may pick at small passive fishes. Some Arrow Crabs will eat troublesome bristle worms. Overall, a great reef inhabitant can live for several years in the home aquarium.
Growth: Maintaining proper Ca, Alk, & Mg levels is important for the growth of their shells.
Feeding: The Arrow Crab is a good scavenger and will eat scraps of meaty food missed by the fish.
Care Level: Easy
Reef Compatible: Yes – semi-aggressive as they mature
Range: Caribbean, Mexico
Water Conditions: 75-80° F; sg 1.024-1.026 (1.025 is ideal); pH 8.1-8.4 Ca 420-440 ppm, Alk 8-9.5 dKH, Mg 1260-1350, Nitrates <10ppm, Phosphates < .10ppm