Feeding habits of larval pike,Esox luciusL., was studied at three stocking densities in illuminated cages. Developmental patterns of larval feeding on Zooplankton were independent of larval density. During the first week of rearing, larvae fed mainly on rotifers, small cladocerans, nauplii and copepodites of Cyclopidae. After second week they selected small cladocerans(Bosminaspp.), and adult copepods (CyclopsandMesocyclopsspp.). Higher stocking densities resulted in lower survival and growth rates. This was presumably due to increased competition for food, as the composition of the diet was independent of stocking density.