Dr. Sonja Jähnig (email@example.com) is a group leader, Vanessa Bremerich a technician, Dr. Jörg Freyhof a project leader, Dr. Simone D. Langhans a postdoctoral researcher, and Fengzhi He a doctoral student at the Leibniz-Institute of Freshwater Ecology and Inland Fisheries, in Berlin, Germany; FH is also affiliated with the Institute of Biology at Freie Universität Berlin. Dr. Savrina F. Carrizo was a program officer with the International Union for Conservation of Nature (IUCN) Global Species Programme's Freshwater Biodiversity Unit at the time of this research. Dr. Ian Harrison is working for the IUCN Freshwater Fish Specialist Group, in Flagstaff, Arizona. Professor Klement Tockner currently serves as the president of the Austrian Science Fund, in Vienna. Dr. Christiane Zarfl is a junior professor at the Center for Applied Geosciences at Eberhard Karls Universität Tübingen, in Germany. Dr. William Darwall is the head of the IUCN Global Species Programme's Freshwater Biodiversity Unit, in Cambridge, United Kingdom.