1. Department of Biology and Ecology of Fishes; Leibniz-Institute of Freshwater Ecology and Inland Fisheries; Berlin Germany
2. Angling Association of Lower Saxony (Anglerverband Niedersachsen e.V.); Hannover Germany
3. National Institute of Aquatic Resources (DTU Aqua); Technical University of Denmark; Silkeborg Denmark
4. Department of Biological and Environmental Science; University of Jyväskylä; Jyväskylä Finland
5. Faculty of Life Sciences; Department for Crop and Animal Sciences; Division of Integrative Fisheries Management; Humboldt-Universität zu Berlin; Berlin Germany