1 Aquatic Ecology and Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland.
2 Department of Fish Ecology and Evolution, EAWAG Swiss Federal Institute of Aquatic Science and Technology, Center for Ecology, Evolution and Biogeochemistry, Kastanienbaum, Switzerland.
3 Computational and Molecular Population Genetics, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland.
4 Department of Environmental Sciences, University of Basel, Basel, Switzerland.
5 Centre for Ecology, Evolution and Environmental Changes, University of Lisbon, Lisbon, Portugal.
6 Swiss Institute of Bioinformatics, Lausanne, Switzerland.
7 Aquatic Ecology and Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland. ole.seehausen@eawag.ch.
8 Department of Fish Ecology and Evolution, EAWAG Swiss Federal Institute of Aquatic Science and Technology, Center for Ecology, Evolution and Biogeochemistry, Kastanienbaum, Switzerland. ole.seehausen@eawag.ch.