Catfish Growth Rate: How Big Will Your Catfish Get?

The growth rate of catfish varies depending on the species and environmental conditions. In general, catfish can grow several inches per year, with some species growing up to a foot or more per year. For example, the blue catfish (Ictalurus furcatus) can grow up to 4 feet long in its first year and can reach a maximum length of over 10 feet. The flathead catfish (Pylodictis olivaris) can grow up to 2 feet long in its first year and can reach a maximum length of over 5 feet.