Flathead catfish

The flathead catfish grows to a length of 155 cm (61 in) and may weigh up to 56 kg (123 lb), making it the second-largest North American catfish (after the blue catfish, Ictalurus furcatus). The average length is about 25-46 in (64-117 cm). Its maximum recorded lifespan is 24 years. Males are mature from 16 cm (6.3 in) and 4 years of age, while females mature from 18 cm (7.1 in) and 5 years of age, but may mature as late as 10 years.