PEITZ, GERMANY - NOVEMBER 16: Fishermen use hooked poles to pull a net around carp during the annual carp harvest at fish ponds on November 16, 2015 near Peitz, Germany. Fish farming at the over 100 man-made ponds located near Cottbus in eastern Germany dates back to the 15th century and carp is the main fish harvested. Carp is the traditional Christmas dinner in many parts of the region, though one fisherman laments that tastes are changing among younger generations and that the demand for carp will decline. (Photo by Sean Gallup/Getty Images)