Larval pikeperch (Sander lucioperca L.) were reared at two initial stocking densities of 250 and 350 individuals per liter. The final body weight of the fish reared at the lower stocking density was 12.7% higher than that of the fish held at a higher density. The survival of the larvae was higher at the higher stocking density, while the feed conversion ratio was better at the lower density. Most fish deaths resulted from cannibalism, and losses due to this were 53.8% of the initial stocking density of 350 individuals per liter, and 45.1 % at 250 Individuals per liter. The results indicate that both initial stocking densities produced satisfactory rearing results. It must be emphasized that the final number of fish obtained for further rearing was substantially more at the higher density (350 larvae/l), which suggests this is suitable for practical applications.
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