Abstract
The aim of this study was to determine the age and growth parameters of huchen, Hucho hucho (L.), individuals collected in the Dunajec River and from a fish farm in Pribovce. A total of 26 fish ranging in age from 5+ to 24+ were analyzed. Length-weight correlations were calculated with transformed regression equations and the von Bertalanffy growth model. The following equations were calculated for the fish from the Dunajec River - log W = -5.665392 + 3.256319 × log L; log L = 1.739815 + 0.307095 × log W; L(t) = 1451.4 × [1 - exp-0.1093 × (t - 0.1251)], and for the fish from the Pribovce farm - log W = - 7.176307 + 3.773629 _ log L; log L = 1.901699 + 0.264997 × log W; L(t) = 1394.1 × [1 - exp-0. 0997× (t - 0.1249)]. The values of Fulton’s condition coefficient for the fish from the Dunajec River and the Pribovce farm were 1.24 and 1.35, respectively. Back-calculated length-weight growth in subsequent years was higher in the fish from the Dunajec River, but both huchen groups generally exhibited positive allometric growth.