A fish farmer looks down on hundreds of dead fish in the waters of the Nestos Delta wetland in northern Greece yesterday. The recent cold snap appears to have killed thousands of farmed fish in the wetland, near the town of Kavala. So far, some 70 tons of dead fish have been found in the waters of the lagoon which froze when temperatures in the area dipped as low as -17 Celsius (1.4 Fahrenheit) last week. Fish farmers said the losses will have a major financial impact on their business. The Nestos Delta covers an area of some 56,000 hectares and is considered to be the home of one of Greece’s most important wetlands.