White perch This species recorded for the Missouri River and the Platte River drainage in Nebraska.  White perch prey on eggs of walleye Stizostedion vitreum vitreum, White bass Morone chrysops, eggs of its own species, and possibly eggs of other species. Apparently, fish eggs are an important component of the diet of White perch in the spring months. At times, depending on which fish is spawning, either Walleye or White bass eggs make up 100% of the diet. During a three-year study, this diet was found to be unique in that eggs were eaten for a comparatively long time, they were the only significant food item eaten by adults during two of the three years, large volumes were eaten per individual, and most fish were feeding. White perch also feed heavily on minnows Notropis spp..