The following is an introduction to watching sharks, as well as Jinlong and Arowana:
Ornamental shark: It belongs to the genus Fistula, which is the common name of Sushi Fistula. It is called "freshwater shark" because it looks like a shark, but it has nothing to do with real sharks. Also known as tiger shark, Bating fish or Bazhen fish, they are mainly distributed in Southeast Asia, with three body colors of black, white and gray, and grow in different river systems and marine systems. Black shark is called freshwater black shark, originally from Thailand, and was introduced to China in 1978. The white one is called freshwater white shark, which is native to Malaysia and was introduced to China on 1998. The grey one is called Malaya River grey shark, which has good meat quality and was introduced to China in 2000.
Jinlong: the scientific name of the beautiful bone-tongued fish is a kind of fish belonging to the genus bone-tongued fish in the family bone-tongued fish. There are several species with different shapes, such as arowana. Arowana is one of the few ancient fish in existence. As early as the Carboniferous period 290 million years ago, arowana, which belongs to the family Osteoglossidae, began to exist. Later, the movement of the earth's crust gradually distributed them to all continents in the world, and now they are mainly distributed in Southeast Asia.
Arowana: alias whitebait, whitebait, arowana, native to Amazon River basin in South America, Nile River basin in Africa, to Australia and Papua New Guinea. Generally, they live in ponds of tributaries and submerged bushes on the shore, and sometimes they can be found in water environment with floating grass. After flowing into China, arowana has been successfully propagated in the south, and it is one of the main ornamental fish in China. Arowana is quite popular in Southeast Asia because of its feng shui demand.