1. The panda in the water is the Chinese sturgeon. The Chinese sturgeon is a species of the order Acipensariformes, the family Acipensidae, and the genus Acipenser. It is one of the oldest living fish species remaining from the Cretaceous period. Among more than 20 species of sturgeons in the world. The Chinese sturgeon has the lowest latitude, the largest body size and the fastest growth. It is a species endemic to my country. The Chinese sturgeon is the largest fish in freshwater and has a special physiological structure. An adult sturgeon can reach more than four meters in length and weigh nearly a thousand kilograms, ranking first among the 27 species of sturgeon in the world.

2. The Chinese sturgeon has a long life cycle and can live up to 40 years old. It is a first-level protected wild animal in China and a living fossil. It is known as the "giant panda in the water". Distributed in China, Japan, South Korea, Laos People's Democratic Republic and North Korea. It is mainly distributed from the main stream of the Yangtze River in China to the estuary of the sea. It occasionally appears in other water systems such as the Ganjiang River, Xiangjiang River, Minjiang River, Qiantang River and Pearl River water systems.

3. The Chinese sturgeon is a bottom-dwelling fish with a very narrow feeding habit. It is a carnivorous fish and mainly feeds on some small or slow-moving benthic animals. In the ocean, it mainly feeds on fish. , followed by crustaceans and less molluscs. The main food of juvenile Chinese sturgeons is benthic fish such as Ophiopogon and pupae, as well as scale shrimps and clams. They generally stop eating during the spawning period.