The scientific name is Catla catla. Adults typically range from 1 to 1.5 meters (3 to 5 feet) in length and weigh from a few kilograms to over 30 kilograms (66 pounds). Katla Fish is native to South Asia, including Bangladesh, India, Nepal, and Pakistan. In Bangladesh, it is commonly found in freshwater bodies in regions like Dhaka, Rajshahi, and Barisal, and is known locally as Katla Mach.