Sawfish
Sawfishes, also known as carpenter sharks, are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged in a way that resembles a saw. They are among the largest fish with some species reaching lengths of about . They are found worldwide in tropical and subtropical regions in coastal marine and brackish estuarine waters, as well as freshwater rivers and lakes.
Sawfish
In the past it has been suggested that sawfish use their saw to dig/rake in the bottom for prey, but this was not observed during the study in 2012, or supported by later hydrodynamic studies. Large sawfish often have rostral teeth with tips that are notably worn.