 Males are mature from and 4 years of age, while females mature from and 5 years of age, but may mature as late as 10 years.The world angling record flathead catfish was caught May 14, 1998, from Elk City Reservoir, Kansas, and weighed .However, a record from 1982, caught by "other methods", shows that the flathead catfish would be North Americas longest species of catfish, after a specimen pulled from the Arkansas river measured 175 cm (69 in.)