Anything, and everything is fair game. Pike are masters at ambushing prey and can strike with lightning speed. Much of their diet consists of other fish including minnows, shiners, suckers, whitefish and other pike, nearly half their size. They have been known to eat frogs, ducklings, mice and muskrats. Crustaceans and insects are also on their menu.
Northern pike are truly opportunistic feeders.
As the days become warmer and water temperatures rise, larger pike are gradually forced back into deeper, cooler water for the summer. Once they move from the shallows, they become more difficult to reach with fly gear. In late summer and autumn, they will sometimes return to shallow water to feed, providing anglers with a chance to catch a late season pike on a fly. Equipment Fly fishing for pike does not require very much in the way of specialized gear. If you fish for trout in lakes, for steelhead or salmon, or you're a saltwater angler, you probably already own most of the equipment you'll need.