Authors
Zdzisław Zakęś
Department of Aquaculture, Stanisław Sakowicz Inland Fisheries, Institute in Olsztyn, Olsztyn, Poland
Maciej Rożyński
Department of Aquaculture, Stanisław Sakowicz Inland Fisheries, Institute in Olsztyn, Olsztyn, Poland
Elżbieta Ziomek
Department of Ichthyology, Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, Poland
Krystyna Demska-Zakęś
Department of Ichthyology, Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, Poland