As is typical of perches, the walleye is equipped with two separate dorsal fins. The anterior fin has spines, and the posterior dorsal has 19-22 soft rays. The anal fin has 12-14 rays and two spines. The body is generally mottled with dark blotches on a yellowish-to-greenish brown background. Colors on the lower body shade to white on the belly. The lower lobe of the tail fin has a light tip. Walleyes are obvious carnivores with teeth in the jaws and on the roof of the mouth.