1, there are not many fishbones in Ding Gui fish, which are mainly big spines in the trunk, and there are no intermuscular spines. Ding Gui fish is fresh and tender in meat, delicious in taste, rich in nutrients and few fishbones, so it is very suitable for the elderly, children and people who are afraid of trouble. However, when cooking Ding Gui fish, it must be boiled until it slips easily, otherwise it will cause bacterial infection and be harmful to human body after eating.

2. There are four colors on the body surface: green, yellow, blue and white. At the same time, it has tender meat, delicious taste and extremely high nutritional value. It is one of the main economic freshwater fish in European countries, and it is also an important fishing and ornamental fish. It is known as the royal pet fish in Europe. Because the body color quickly turns black after catching, it is called "black fish". It has two characteristics of omnivorous and sticky eggs, and is an important economic fish with high ornamental value.