The main prey of 0+ pikeperch in the pelagic zone of the Sulejow Reservoir was Leptodora kindtii and copepods, which together constituted only about 20% of the zooplankton by number in the water. Leptodora kindtii predominated in pikeperch food close to the surface, and copepods in deeper water. A depth‐dependent shift in feeding mode from large particle selection to filtering, as an adaptation to reduce intraspecific competit...