River eel is expensive. According to market field surveys, the price of river eel is usually about 50 yuan a catty, the price of yellow eel is usually about 25 yuan, river eel, is a descending river backwater fish, born in the sea, the river grows up, the yellow eel body elongated, snake-shaped, the body of the front of the round, the back of the lateral compression, the tail tip is thin, the head is long and round.