Authors
Zdzisław Zakęś
Department of Aquaculture, Inland Fisheries Institute in Olsztyn Oczapowskiego 10, 10-719, Olsztyn, Poland
Maciej Rożyński
Department of Aquaculture, Inland Fisheries Institute in Olsztyn Oczapowskiego 10, 10-719, Olsztyn, Poland
Andrzej Kapusta
Department of Ichthyology, Hydrobiology, and Aquatic Ecology, Inland Fisheries Institute in, 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