40 pounds. The fat-headed fish in Chagan Lake weighs 40 pounds per meter. The fat-headed fish is very large and can cost several thousand yuan per bite. Chagan Lake fat-headed fish is a specialty of Qiangarros Mongolian Autonomous County in Jilin Province and a national geographical indication product of China. The Chagan Lake fathead fish lives in the middle and upper layers of the water body, has a docile temperament and slow movement.