Introduction to the Freshwater Biology Hall: The Freshwater Biology Hall was built in 1995. It is a special exhibition hall mainly displaying freshwater creatures. The museum has rich exhibits, including precious aquatic animals such as Chinese sturgeon, alligator, salamander and mullet distributed in the Yangtze River system in my country; as well as tropical aquatic animals and plants distributed in South America, Africa and South Asia, such as panlion, arapaima and Malayan crocodile etc.