Intensive rearing of juvenile Stizostedion lucioperca (Percidae) fed natural and artificial diets

Stizostedion lucioperca reared in a recirculating water system were fed wit h natural (live zooplankton) and artificial food (trout granules). Fish fed different diets differed significantly in their growth, condition factor a nd survival (P < 0.05). At the end of the rearing period the level of prote ins and lipids in the fish fed an artificial diet were almost 1% and above 5% higher than in fish fed zooplankton, Amino acid composition of the fish Nas stable throughout the rearing period.