Romania 1966 |
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Freshwater Mussel Anodonta cygnaea (Unionidae) |
Unionoida is distributed over the world in the taxa of the bivalve of the fresh water life widely. Many shellfishs of Unionoida are fertilized in a mother shellfish and occur, and it is with larva and it is parasitic on the surface of a body of the fish and grow up and enter the free-living afterwards.