Photo shows artificially bred Yangtze sturgeon. (Photo provided to China News Service) Chinese Sturgeon Research Institute of The Three Gorges Corp has successfully bred 1.5 millions of rare Yangtze River fish since the end of April, including more than 800,000 Yangtze sturgeon, more than 180,000 Largemouth bronze gudgeon and more than 100,000 Rhinogobio ventralis.

Technicians work to breed rare fish at the Chinese Sturgeon Research Institute in Yichang, central China's Hubei Province. (Photo provided to China News Service)

Technicians work to breed rare fish at the Chinese Sturgeon Research Institute in Yichang, central China's Hubei Province. (Photo provided to China News Service)

Technicians work to breed rare fish at the Chinese Sturgeon Research Institute in Yichang, central China's Hubei Province. (Photo provided to China News Service)

Technicians work to breed rare fish at the Chinese Sturgeon Research Institute in Yichang, central China's Hubei Province. (Photo provided to China News Service)

File photo shows the Largemouth bronze gudgeon (coreius guichenoti), the second-class national protected animal. (Photo provided to China News Service)