Hidden at the bottom of Lake Maggiore, a rare cagnetta (Salaria fluviatilis). In order to better understand the diversity of the fish and their dynamics, researchers in the Projet Lac have begun to observe the fish directly in their environment. (Photo: Eawag, Ole Seehausen)
Hidden at the bottom of Lake Maggiore, a rare cagnetta (Salaria fluviatilis). In order to better understand the diversity of the fish and their dynamics, researchers in the Projet Lac have begun to observe the fish directly in their environment. (Photo: Eawag, Ole Seehausen) - In the "Projet Lac" research project, 35 lakes in the Alpine region were systematically examined for their fish populations for the first time: In Switzerland alone, 106 fish species were detected. With almost 20 percent of all known fish species in Europe, Switzerland is one of the hotspots for fish species diversity. The results are now the basis for measures for sustainable fishing and the protection of this still preserved diversity. Between 2010 and 2020, it was time to take stock of the fish in many lakes on the edge of the Alps. As part of the "Projet Lac", a team of scientists from the Swiss Federal Institute of Aquatic Science and Technology (Eawag) and the University of Bern carried out the first comprehensive and standardised surveys of fish populations in 35 large lakes on the edge of the Alps.
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