1. Faculty of Fisheries and Protection of Waters University of South Bohemia in Ceske Budejovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture and Protection of Waters České Budějovice Czech Republic
2. Faculty of Animal Bioengineering, Department of Ichthyology and Aquaculture University of Warmia and Mazury Olsztyn Poland