The Giant Mexican Needlefish, Tylosurus fodiator, is a member of the Needlefish or Belonidae Family, that is also known at the Houndfish, and in Mexico as agujón lisero. The Giant Mexican Needlefish has a slender elongated rounded body with a dark blue-green upper body, silvery sides, and a white belly. It is an oceanic pelagic fish found in the first 3 m (10 feet) of the water column.