No Idaho quagga mussels detected yet in 2025
The quagga mussel, first discovered in the United States in 1989, is an invasive species that alters the food web by filtering water and removing plankton, according to the U.S. Geological Survey. (Amy Benson/U.S. Geological Survey)
Two-thirds of the way through summer, the Idaho State Department of Agriculture announced it has not yet detected any quagga mussels after two years of aggressive treatment in the Snake River.
However, the microscopic mussel veligers were not detected in the water near Twin Falls until late September in both 2023 and 2024. ISDA treated the infected river with a copper-based solution both years.
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