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
Among the five sawfish species, only the four "Pristis" species are known to be kept in public aquariums. The most common is the largetooth sawfish with studbooks including 16 individuals in North America in 2014, 5 individuals in Europe in 2013 and 13 individuals in Australia in 2017, followed by the green sawfish with 13 individuals in North America and 6 in Europe. Both these species are also kept at public aquariums in Asia and the only captive dwarf sawfish are in Japan. In 2014, studbooks included 12 smalltooth sawfish in North America, and the only kept elsewhere are at a public aquarium in Colombia.