The bigger the Dolphin, the more expensive it is, because the price of Dolphin is around 20 to 30 yuan per catty. If Dolphin is heavier, the price will be higher.

Duobao fish, also known as European flounder, mainly produces in the east coast of the Atlantic Ocean. It is a rare low-temperature economic fish along the coast of the Northeast Atlantic Ocean, belonging to cold-temperate and benthic omnivorous fish.