Though with their long bodies the Sawfish looks very much like a shark it actually belongs to the ray fish family. They are grouped with rays partly because they have gill slits on the underside of their head.
A sawfish uses this saw to nose around sandy bottoms to find food, and to slash at fish for food or defense. Like sharks, rays have special organs in their skin for detecting the electrical voltage of other animals. These sensors help them hunt for food. Smalltooth sawfish can be found in shallow coastal waters and tidal portions of rivers.