Tor tor, commonly known as the tor mahseer or tor barb, is a species of cyprinid fish found in fast-flowing rivers and streams with rocky bottoms in Bangladesh, Bhutan, India, Nepal, and Pakistan. It is a commercially important food and game fish. Its population is rapidly declining in its native range due to overfishing. It is a large fish, reaching 36 cm (14 in) at maturity, but lengths of 150 centimetres (4.9 ft) have been recorded. The fish is well armoured by their record large scales, each reaching up to 10 centimetres (3.9 in) in length.