In the market, the price of large yellow croaker varies according to its size and weight. For fish weighing less than 3 Liang, the price is per catty 150 yuan; With the increase of fish's weight, the price also rises, and the price of a catty of 4 Liang fish is about 280 yuan. When the weight of fish reaches five taels, the price rises to one catty in 380 yuan. For larger fish of 6-7 taels, the price has reached a catty in 550 yuan. The unit price of large yellow croaker weighing 8 to 9 Liang is as high as that of 800 yuan. Generally speaking, the price of large yellow croaker is calculated according to the law of increasing weight. You can roughly estimate its price range according to the size of the fish you need to buy.