The Chinese sturgeon is thought to be 140 million years old. 32 years ago, researchers started tracking the fish because its numbers drastically decreased. Because of water pollution, the number were falling even more. Last year, there were no reports of Chinese sturgeon breeding in wild. Chinese sturgeon are at a dangerously low number. Not only them, other animals in the Yangtze river like the finless porpoise are in danger of extinction.
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