The study involved a total of 633 pikeperch individuals caught within 1995-2000 in Lake Dąbie, the Szczecin Lagoon, and the Pomeranian Bay. The length and weight growth as well as the condition of the fish were analysed with commonly used methods. The verge coefficient (Kr) and the verge increment (Pk) were determined for each individual. The Kr value was subsequently taken into account to ascribe each individual to an appropriate age groups; when Kr > 0.5, the age assumed from the number of annual rings was augmented by 1. The results showed the length growth to be rather similar (particularly in the earlier phase of life) in different samples. On the other hand, the Lake Dąbie pikeperch revealed a clearly slower growth rate and a poorer condition. Noteworthy were the dynamics of Kr and Pk over a year: the highest values were recorded in winter, the lowest being typical of summer. Changes in Kr allow to contend that the annual ring on a pikeperch scale is usually formed during summer months.

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