The San Francisco Bay-Delta and Sacramento-San Joaquin river system are home to a rare, enormous species of living fossil called the green sturgeon. The ancient fish has survived unchanged for almost ...

The green sturgeon (Acipenser medirostris) is a species of concern due to its declining populations and the threats it faces from habitat loss, pollution, and climate change. Understanding the ...

One of 17 sturgeon species belonging to the Acipenser genus, Chinese sturgeons have a sharklike form, with large pectoral fins, a rounded snout, and rows of pronounced ridges running the length of ...