Michel Roggo / Watermilfoil (Myriophyllum spicatum) with some stems supporting clusters of Zebra mussel (Dreissena polymorpha) Lake Neuchatel, Switzerland. Highly commended in the Plants category of the Wildlife Pho...
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Jack Perks / Common carp (Cyprinus carpio) swimming in a river, feeding on Zebra mussels (Dreissena polymorpha). The animal swims out of the frame. London, UK.
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Alex Mustard / A group of highly invasive Zebra mussels (Dreissena polymorpha) growing on an underwater structure, Whittlesea, Cambridgeshire, UK.
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Chris Shields / Illustration of Zebra mussel (Dreissena polymorpha)
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Michel Roggo / Wels catfish (Silurus glanis), on the bed of the Aare river, with Zebra mussel (Dreissena polymorpha) Brugg, Canton of Berne, Switzerland. October. Photographed for The Freshwater Project.
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Michel Roggo / Watermilfoil (Myriophyllum spicatum) with Zebra mussel (Dreissena polymorpha) attached to stems. Lake Neuchatel, close to Boudry, Canton of Neuchatel, Switzerland. October. Photographed for The Freshw...