Normally, there are about 4-6 crabs per pound, and there is no specific weight data. There are many varieties of crabs, such as large sea crabs such as king crabs and swimming crabs, which can weigh several kilograms each. Commonly eaten river crabs and lake crabs, such as the more famous hairy crabs, weigh around 150 pounds. Gram to about 200 grams. According to traditional Chinese measurement units, it is between three taels and four taels. It can be seen that there is no unified standard for the weight of crabs.

Let’s take hairy crabs as an example. If they are raised in the lake for more than six months, the weight of each premium male crab should not be less than 200 grams, and the weight of a female crab should not be less than 150 grams; the weight of a first-grade male crab should not be less than Less than 150 grams, the female crab is not less than 125 grams; the weight of the second-level male crab is not less than 125 grams, the female crab is not less than 100 grams, and the weight of each special-grade male crab cannot be less than 100 grams. Less than 200 grams, female crabs should not be less than 150 grams; first-class male crabs should weigh not less than 150 grams, female crabs should not be less than 125 grams; hairy crabs weighing less than this standard will not be called true hairy crabs , that is a failed hairy crab or "June Yellow".