Graphics and information from ohio department of natural resources :  
Walleye

Description The walleye has a long slender body with a yellow-olive color with a brassy overcast on the sides. The tail fin has a white spot on the bottom edge. The eye is large and cloudy, and there is a dark blotch on the webbing between the last three spines of the first dorsal fin. The mouth is filled with sharp canine teeth. The walleye looks similar to the sauger and saugeye. Habitat and Habits Walleye prefer clear to slightly turbid waters. They usually occur in greatest abundance over reefs, shoals of gravel, bedrock, and other firm bottoms. Reproduction and Care of the Young Walleye spawn throughout the month of April when water temperatures are between 40 and 55° F. Walleye are free spawners that deposit their eggs in the riffle areas of tributary streams or over gravel to boulder-sized rocks in reef areas of Lake Erie. The eggs hatch in about 10 days. Females can lay as many as 400,000 eggs. Young walleye feed on zooplankton and insect larvae for most of the first year. Following this stage the young shift to a diet of small fish. Walleye Sander vitreus At-a-Glance • Family: Percidae (Perch) • Other names: Pickerel, Yellow Pike, Walleyed Pike • Length: normally 14-22 inches (can reach 36 inches) • Weight: 2-4 pounds (can reach 16 pounds) • Typical foods: emerald shiners, gizzard shad, alewives and rainbow smelt

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