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Last updated on April 23, 2014 at 21:24 EDT

International News Archive - March 19, 2013

Is It Possible For A Tropical Water Flea To Invade European Lakes?

Daphnia is a genus of small, planktonic crustaceans, commonly called 'water fleas' because of their jumpy swimming style and their size (between 0.2 and 5 mm).