Polish environmentalists and anglers are demanding answers after thousands of dead fish were found floating in a local reservoir which had been drained for structural work. Shocking images from the Pilchowice Reservoir in Poland show tons of rotting dead fish washed up along the shores of the lake, part of the Bóbr River system and home to Poland’s second-highest hydroelectric dam. The reservoir was partially emptied to allow structural work on the century-old dam, which had not undergone ma