Photo de stock - 31 May 2021, Baden-Wuerttemberg, Rheinstetten: A live calico crayfish is shown at a pond called ""Milk Coffee"". In that body of water, the crayfish has now been nearly driven out. The introduced potash crayfish have become a threat to waters in the southwest as far as the Palatinate and Hesse. However, it is possible to save dying ponds and pools and displace the crayfish. This has been shown by a Karlsruhe research project. (To dpa ""Life in the pond again - measures against potash crayfish give hope"") Photo: Uli Deck/dpa. - Rheinstetten/Baden-Wuerttemberg/Germany

Photo de stock: 31 May 2021, Baden-Wuerttemberg, Rheinstetten: A live calico crayfish is shown at a pond called ""Milk Coffee"". In that body of water.

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