Their tails are usually forked. The blue catfish spawns in the middle of summer. The males and females build nests for their eggs and like to take care of their eggs. Blue catfish eggs are quite a delicacy for predators, because they're so hard to get ahold of. The parents are initially protective of their offspring.
Females typically lay thousands of eggs each season, depending on the size of the mother.
Once the eggs hatch, the young typically go their own way. Blue catfish generally are individualists. They don't need to be around other fish of their type in order to be happy. Because of their size, they are often feared by many other types of fish. They rarely have trouble finding meals, and like to eat other fish.