Saw sharks sometimes hunt and eat squid.  They dwell in the rage of 37–500 m, preferring to stay in the warmer water. The teeth of the saw typically alternate between large and small. The African dwarf sawshark (Pristiophorus nancyae) is a small five-gill sawshark that lives off the coast of Mozambique.
They have litters of 3–22 pups every 2 years. These sharks can live to be up to 9 years old. The shark reaches average lengths of 3 feet (1 m), and are located in the oceans surrounding Japan, Australia, South Africa and the Caribbean. The two dorsal fins are almost identical in size. Midway down the snout, nasal barbels protrude on both sides of the snout.
Saw shark is a type of shark best known by its saw-like snout.
 It has unique physical characteristics which include a long, thin, and flattened snout.
 Genus Pliotrema has six gill slits, and Pristiophorus the more usual five.
Even though saw shark and sawfish share similarities in appearance, they differ in several aspects. A sawshark or saw shark is a member of a shark order (Pristiophoriformes) bearing a unique long, saw-like rostrum (snout or bill) edged with sharp teeth, which they use to slash and disable their prey.  Like the other members of the Pristiophorus family, the common sawshark can be identified by a long snout with rows of small teeth and barbels on either side. , The Japanese sawshark (Pristiophorus japonicus) is a species of sawshark that lives off the coast of Japan, Korea, and Northern China. Saw sharks are ovoviviparous meaning eggs hatch inside the mother. There are currently ten known species of sawsharks across two genera in this family: The sixgill sawshark (Pliotrema warreni) is known for its six pairs of gills located on its sides close to the head. Number of saw sharks declined in the past couple of decades due to commercial fishing, but they are still not on the list of endangered species. Saw shark has yellowish-brown skin, covered with dark blotches and spots. The maximum size for this species is of 124 cm TL for females and 110 cm TL for males. Clear difference is that a sawfish has no barbels and a saw shark has a prominent pair halfway along the saw.
 The longnose sawshark prefers to swim in both the open sea and coastal regions from the surface to a depth of 600m. Where found, they are considered a prize catch.
 They are located near Cuba, Florida, and the Bahamas (hence their name) where they dwell in the depths of 400–1000 m. As far as their appearance they can be identified by their snouts with teeth which appear as a saw, as well as their length, they are averaged at 80 cm in length..
Both the saw shark and the sawfish utilize the electroreceptors on the saw, ampullae of Lorenzini, to detect the electric field given off by buried prey. A clear difference is that a sawfish has no barbels and a sawshark has a prominent pair halfway along its rostrum.
 The body is a yellow-brown color which is sometimes covered in dark spots or blotches.
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