The length-weight relationship of young carp (Cyprinus carpio L.) was
seen to change markedly in the course of the autumn, winter and spring
seasons of investigation. A significant difference was proved between
two young groups of different size and weight. In both young groups,
the maximum weight decrease was noted in mid April, being 24.5% in sma
ller young and 13.3% in larger specimens. A mutual comparison was made
of the application of weight condition coefficients, b regression coe
fficient of the exponential regression for length-weight relationship,
absolute and relative weights and the methodological procedures. In a
ll cases both non-adjusted empirical data of samples caught and adjust
ed data of size-grouped young carp by length-weight relationship were
used.