Crappies are both predators and prey. Both species of crappie as adults feed predominantly on smaller fish species. This includes the young of their own predators (which include the northern pike, muskellunge, and walleye). They have varied diets, however, including zooplankton, insects, and crustaceans. By day, crappie tend to be less active and to concentrate around weed beds or submerged objects, such as logs and boulders. They feed especially at dawn and dusk, moving then into open water or approaching the shore.