1. How big is the crayfish?
The size of crayfish is generally divided into Xiaoqing/Xiaohong, Zhongqing/Hong Zhong, Daqing/Dahong, Qingliangxia/Hongliangxia and other models. The specific division basis is as follows:
1, specification department
(1) method 1
① Red shrimp: Xiaohong, weighing about 2-4 yuan; Medium red, weighing about 4-6 yuan; Red, weighing about 7-9 yuan; Red shrimp weighs 1 or more.
② Shrimp: Xiaoqing, weighing about 2-4 yuan; Middle-aged, weighing around 4-6 yuan; Daqing, weighing about 7-9 yuan; Shrimp weight 1 above.
(2) Method 2
① Red shrimp: bitter summer, weighing about10-19g; Grade 4 shrimp, weighing about 20-29g；; ; Third-grade shrimp, weighing about 30-39g；; ; Secondary shrimp, weighing about 40-49g；; ; First-class shrimp, weighing more than 50g.
② Macrobrachium nipponense: bitter shrimp, weighing about10-14g; Macrobrachium nipponense, weighing about 15- 19g, Macrobrachium nipponense, weighing about 20-29g；; ; Macrobrachium nipponense, weighing over 30 grams.
2. Lobster species
(1) Red shrimp: The weight is about 15- 100g, the body length is about 50-90mm, and the appearance color is crimson, red or brownish red.
(2) Shrimp: The weight is about 10-50g, the body length is about 15-90mm, and the appearance color is cyan or cyan.
(3) Library shrimp: crayfish that are not suitable for breeding or commercial shrimp.
How big is the crayfish?
1, money is a unit of weight, and its conversion relationship with gold, beam and g is as follows: 1 gold = 10 beam = 100 money = 500g, that is, 1 money = 5g.
2, 4 money crayfish refers to crayfish weighing 20 g. Under normal circumstances, the crayfish of size 2-4 yuan is about 25-50 per catty.
3. When selecting crayfish, it is appropriate to choose crayfish with complete appearance, uniform and symmetrical body shape, about 50% head and 50% body, bright and clean appearance, clean belly hair and claw hair, white abdomen and no rancid or metallic smell.