1. Naturhistorisches Museum der Burgergemeinde Bern Bernastrasse 15 CH 3005 Bern Switzerland
2. Aquatic Ecology and Macroevolution Institute of Ecology & Evolution University of Bern Baltzerstrasse 6 CH 3012 Bern Switzerland
3. Fish Ecology and Evolution EAWAG Seestrasse 79 CH 6047 Kastanienbaum Switzerland
4. Department of Quantitative Economics University of Fribourg Boulevard de Pérolles 90 CH 1700 Fribourg Switzerland