1. Biology Centre of the Czech Academy of SciencesInstitute of Hydrobiology České Budějovice Czech Republic
2. Leibniz‐Institute of Freshwater Ecology and Inland Fisheries Berlin Germany
3. Institute for Multidisciplinary ResearchUniversity of Belgrade Belgrade Serbia
4. World Sturgeon Conservation Society (WSCS) Vedano al Lambro (MB) Italy
5. Institute for Biological ResearchUniversity of Belgrade Belgrade Serbia