This fish can live in saltwater and freshwater!!!!!!!!!!!!!!!

Description of habitat:

Largetooth sawfish can tolerate a range of salinities or salt levels. They can be found in tropical and subtropical waters around the world where the waters are warm. They primarily occupy shallow coastal wetland and mangrove habitats. It tends to utilise more marine and brackish coastal habitats. They can be found anywhere from freshwater rivers to salty coastlines. Other animals that live in their habitat are large sharks, tiger sharks, dolphins, rays, prawns, crustaceans, mullets and herrings. 

Where can they be found:

The largest remaining population of largetooth sawfish can be found in Australia, Amazonia and the Indo-Pacific region. They are not an invasive species.

Diet:

Largetooth sawfish eat a variety of fish, though molluscs and crustaceans may also be consumed. They use their rostra to slash through schools of fish, swinging it from side to side to impale and stun prey. The rostrum also contains electro-sensory system, which can sense the weak amount of electricity produced by other animals. This system helps sawfish identify when prey is nearby. Largetooth sawfish eat as needed.

Social Structure:

They are solitary. Male and females come together during mating season. 

Reproduction:

Largetooth sawfish are ovoviviparous, meaning they grow their embryos internally and nourish them from yolk sack before giving birth to live, independent young. 1-13 pups are born every other year and females take more than 10 years to mature.

• Development

Newborns are around 76 to 90 centimeters long and grow by 38 centimeters in their first year of life. Few pups (1–13) are born every other year, and females take more than 10 years to mature, so they reproduce very slowly. Pups are about 0.75 m when born, and at birth their rostral teeth do not fully erupt – they are covered by a sheath of tissue to protect the mother (the sheath dissolves quickly thereafter). Female rostral tooth counts and size are typically smaller than that of males. Another difference is that males have claspers, which are modifications of the pelvic fins and are located on the inner margin of the pelvic fins.

• Impact of Humans

They get caught in nets and other fishing equipment. Human-induced threats include the reduction of coastal habitat through human modifications (i.e., construction of dams, dredge and fill practices, coastal armoring), pollution-related injuries and death, and landings of sawfishes as bycatch and in targeted fisheries for their meat, liver oil, fins and skin (leather). Humans have hunted largetooth sawfish for thousand of years. They have been listed on Appendix I of CITES to help restrict their international trade, and there is limited, and highly regulated, trade in largetooth sawfish for display in aquaria.