Tor putitora

Tor putitora, the Putitor mahseer, Himalayan mahseer, or golden mahseer, is an endangered species of cyprinid fish that is found in rapid streams, riverine pools, and lakes in the Himalayan region. Its native range is within the basins of the Indus, Ganges and Brahmaputra rivers.
It is a popular gamefish, once believed to be the largest species of mahseer, and can reach up to  in length and  in weight, though most caught today are far smaller. It is threatened by habitat loss, habitat degradation and overfishing, and it already has declined by more than an estimated 50%. This omnivorous species is generally found near the surface in water that ranges from . 

Its caudal, pelvic, and anal fins show tint of reddish-golden colour. While the body above its lateral line is generally golden in colour at adulthood, the gold colour might be absent in young specimens.
Hamilton's original description says "The head is blunt, oval, small, and smooth". He goes on to say "The mouth is small" and "the lateral line is scarcely distinguishable". However, the largest head of any mahseer species, with a large mouth and prominent lateral line stripe, are features considered to be important in the correct identification of this species.

Tor putitora is the national fish of Pakistan.

Releases beyond native range 
Recent releases of artificially bred stock have been into the Irrawaddy River basin in Nagaland, India and, through the Indo-German Biodiversity Programme  releases into the Hira Bambai reservoir and small streams around Melghat Tiger Reserve, part of the Tapti River basin . The effect of releasing fish from a different river basin, well outside its native range is uncertain. That these fish are being released over a ten year period, with as many as 10,000 in each batch, must be considered a huge threat to the native mahseer and other fish species.
According to Dr Ogale, former scientist leading the fish breeding programme for Tata Power: 
"When these mature, there will be more fingerlings which will be then introduced in river Tapi" .
River Tapi is a west-flowing river of the central Indian state of Maharashtra.

Most researchers believe this fish is in a population decline, hence the Red Listing status of Endangered. Some, however, have noted that Tor putitora is "quite abundant", which also raises questions about the status of ongoing stock augmentation programmes.

References

Category:Fish described in 1822
Category:Cyprinid fish of Asia
Category:Freshwater fish of China
Category:Freshwater fish of India
Category:Fish of Pakistan
Category:National symbols of Pakistan