By Jason Bittel
More than 16 feet long and weighing up to 1,100 pounds, Chinese sturgeons are among the world's largest freshwater fish. They're big and they're ancient. According to fossil records, they've been swimming China's Yangtze, Qiantang, Minjiang and Pearl Rivers since the time of the dinosaurs.
And now they're on the brink of oblivion, having disappeared from all of their former range except for small portions of the Yangtze.