Meaning of "Channel catfish"

channel catfish

channel catfish
n.
An edible freshwater catfish (Ictalurus punctatus) of North America, having spots on the side and long barbels. Also called channel cat.

chan′nel cat′fish

chan′nel cat′fish n.
a freshwater food fish of the central U.S., Ictalurus punctatus.Also called chan′nel cat`.
[1830–40, Amer.]