It has no scales and is cylindrical. At that time, this kind of fish was visually called eel. Eel (mán?lí) Anguilla japonica Temminck et Schlegel? Eel is a migratory fish that descends into rivers. It is native to the sea. It grows upstream in fresh water and then returns to the sea to give birth. egg. Every spring, large numbers of young eels (also known as white eels and eel threads) enter river mouths from the sea in groups. An eel is the meat or whole body of an eel, an anguillary species. Eel is a fish that looks like a snake but has no scales. It is usually found in the sea areas where saltwater and freshwater meet. Mainly distributed in China's Yangtze River, Minjiang River, Pearl River Basin, Hainan Island and rivers and lakes.

There are 18 species of eel in the world. Among them, Taiwan has four families: Japanese eel, perch eel, Celebes eel and short-finned eel. However, only Japanese eel is the most common, and the other three species are rare. They have survived on Earth for tens of millions of years, but our knowledge of them is only in the past few decades. For example, its true spawning ground was discovered in 1991. It turns out that its gender is most controlled by environmental factors and density. When the density is high and food is insufficient, it will become a male fish, and vice versa. Since the number of eels in Taiwan's rivers is very small, most of them are female eels.

Nowadays, it is generally available in large supermarkets.