Large numbers of fish have been found dead in a river in eastern China, according to media reports. The dead fish have been found floating along several kilometres of the Qinhuai River in Nanjing, Jiangsu TV reported. The hot weather is causing the fish to rot and create a bad smell, the report said. Some have also drifted ashore among waterweeds and rubbish, adding to sanitary problems. Workers are picking up the dead fish in boats and cleaning the river every day, but cannot collect all the carcases, the report said. 80 per cent of groundwater in China’s major river basins is unsafe for humans, study reveals The Qinhuai is a tributary of the Yangtze and a well-known tourism site in the city. An official at the Nanjing water supply bureau was quoted as saying that the fish may have been washed downstream by recent flooding at reservoirs upriver and died because the water has a higher temperature and differing environment.