The Eastern Asiatic freshwater clam Sinanodonta woodiana was found for the first time in the Dyje (Thaya) river (South Moravia) in 1996. It was also reported from the Žehuňský rybník fishpond (Central Bohemia). In 2003, a third site at which the freshwater clam lives was confirmed to be the Chropyňský rybník fishpond (Central Bohemia).
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© Photo J. Novák