Keywords: Zebra mussels dreissena polymorpha small freshwater mussel on rudder.jpg en <br/> Image title Zebra mussels dreissena polymorpha small freshwater mussel on rudder Image from Public domain images website http //www public-domain-image com/full-image/fauna-animals-public-domain-images-pictures/mussels-pictures/zebra-mussels-dreissena-polymorpha-small-freshwater-mussel-on-rudder jpg html http //www public-domain-image com/public-domain-images-pictures-free-stock-photos/fauna-animals-public-domain-images-pictures/mussels-pictures/zebra-mussels-dreissena-polymorpha-small-freshwater-mussel-on-rudder jpg Griffiths R U S Fish and Wildlife Service Not given Transferred by Fæ on 2013-02-26 This file is in public domain not copyrighted no rights reserved free for any use You can use this picture for any use including commercial purposes without the prior written permission and without fee or obligation PD-author Griffiths R U S Fish and Wildlife Service Images uploaded by Fæ Public-domain-image com Dreissena polymorpha Public-domain-image com check needed |