Differences in appearance, distribution area, nutritional value, etc.

1. Appearance differences: Plaice: The body of plaice is disc-shaped, with extremely long dorsal and anal fin bases that almost connect to the tail fin backwards. The skin color of plaice is dark gray or patchy, and the eyes are located on the right side of the body. Opium fish: Opium fish has flat sides and is asymmetrical. Both eyes are on the left side, the mouth is in front of the mouth, the lower jaw is protruding, and the edge of the front operculum is free. The skin of the opium fish is dark gray on the eye side and white on the eyeless side.

2. Differences in distribution areas: Plaice: Plaice is native to the northern waters of the Atlantic Ocean and is widely distributed in tropical or temperate oceans. Opium fish: Opium fish is native to the northern waters of the Atlantic Ocean and is widely distributed in tropical or temperate oceans.

3. Differences in nutritional value: Plaice: Plaice contains high fat content, which can easily lead to obesity after eating. However, sole is rich in nutrients such as phosphorus, selenium, iodine, and vitamin B, which are beneficial to human skin and hair. Opium fish: The meat of opium fish is tender and white, with a sweet taste. Opium fish is non-toxic and can help replenish deficiency and replenish qi.