The Chinese sturgeon (Acipenser sinensis) is the largest anadromous fish in the Yangtze River and is considered a critically endangered species with only one spawning ground. Additionally, it has failed to spawn in recent years (2013, 2015, and 2017-2022), pushing the species to the brink of extinction.
Click here for original story, Understanding the reproductive strategy in the endangered Chinese sturgeon
Source: Phys.org