Chinese mitten crab - The <b>Chinese mitten crab</b>, <i><a href="//commons.wikimedia.org/wiki/Eriocheir_sinensis" title="Eriocheir sinensis">Eriocheir sinensis</a></i>. This male specimen was found ashore in 150 metres distance to the banks of the <a href="//commons.wikimedia.org/wiki/Elbe" title="Elbe">Elbe</a> river in the German federal state of <a href="//commons.wikimedia.org/wiki/Brandenburg" title="Brandenburg">Brandenburg</a>. It behaves defending against the viewer by erecting the body and showing its hairy claws. The carapax’s width is estimated at six centimetres. © Christian Fischer - CC BY-SA 3.0 - Wikimedia Commons