Hundreds of fish jump meters high as water is released from Longkai River into Gantang Lake to provide fresh water in Jiujiang city in East China's Jiangxi province, August 3, 2011. It's usually the best time for fish to get food and oxygen from the injected water. [Photo/CFP]

Hundreds of fish jump meters high as water is released from Longkai River into Gantang Lake to provide fresh water in Jiujiang city in East China's Jiangxi province, August 3, 2011. [Photo/CFP]