234: Specifications are within 2, 3 and 4 yuan.
456: The specification is 4,5, within 6 yuan.
789: Specifications are within 7, 8 and 9 yuan.
Crayfish are generally based on weight, and ten dollars is one or two. Four-five-six-seven is the specification of crayfish, that is, it is distinguished by weight. 6-7 money is more popular.
Extended data:
Precautions for eating crayfish:
First, when eating crayfish, you should pay attention to buying from regular channels and don't fish by yourself; Don't eat wild crayfish.
Second, clean it before cooking and cook it thoroughly during cooking. Do not process crayfish that are dead, have abnormal senses or have bad taste; Don't eat the head and viscera of crayfish. When eating in a restaurant, consumers should choose a restaurant with a food business or catering service license and formal hygiene, and ask for an invoice or receipt.
Third, eat crayfish in moderation every time to increase food diversity.
Fourth, if you have symptoms such as systemic or local muscle aches after eating crayfish, you should seek medical advice in time and take the initiative to inform the doctor.
People's Network-How to eat crayfish healthier? The food and drug administration told you