1, rarity: Black snapper is one of the rarer fish, with a relatively small yield. Due to the high requirements for the growth environment, it can only grow in specific sea areas, and the supply is limited, resulting in higher prices.

2. High nutritional value: Sparus macrocephalus is rich in high-quality protein, unsaturated fatty acids, vitamins and minerals. It is considered as a healthy food, which has many nutritional values for human body, such as helping to maintain cardiovascular health and enhance immunity. High nutritional value is also one of the reasons for the price increase.

3. High demand: Sparus macrocephalus is loved by many consumers because of its delicious taste and tender meat, which is suitable for a variety of cooking methods. However, in some high-end restaurants and seafood markets, the demand for black snapper is large, which also leads to the price increase.