Authors
Maria Urbańska
Department of Zoology, Institute of Zoology Poznań University of Life Sciences, Poznań, Poland
Andrzej Łakomy
Department Poznań, Polish Angling Association, Poznań, Poland
Wojciech Andrzejewski
Division of Inland Fisheries and Aquaculture, Institute of Zoology, Poznań University of Life Sciences, Poznań, Poland
Jan Mazurkiewicz
Division of Inland Fisheries and Aquaculture, Institute of Zoology, Poznań University of Life Sciences, Poznań, Poland