According to Baidu Encyclopedia, the dragonfish is a sea fish, distributed in China's offshore sea area, growing in the sea environment with a wide range of temperatures, wide range of salt and variability; and is one of the more common in our country, the dragonfish is a kind of pteropods, that is, a kind of flounder. The young are no different from other fish, but slowly the "mouth and nose crooked", gradually lurking in the bottom of the activities, some places also called cow tongue.

Longleaf has few natural resources, fresh flavor, high meat rate, smooth texture, fish meat cooked for a long time without old, no fishy taste and odor, belonging to the high-protein, nutrient-rich, traditionally for the vast number of consumers along the coast of China's hospitality to the guests of the top quality, favored by the vast number of consumers, the price of live fish is very high.