Ar-1581 ARROW CRAB, Metoporhaphis calcaratus or Stenorhynchus seticornis

The spider-like arrow crab which occasionally rises from the bottom and “walks” up and down in the water column, one of the most bizarre forms of behavior to be witnessed in an aquarium. It has a tiny body with a long pointed rostrum and long slender legs. Size: 6 cm. across arm tips.