Is the live shrimp sold in the market fresh water or seawater?

1. What are the common species of freshwater shrimp?

These are the most common species on the market: grass shrimp, white shrimp and Rockwell shrimp.

Second, the price of common freshwater shrimp

33 yuan/kg of grass shrimp in Minquan County, Shangqiu City, Henan Province; Donggang city White Shrimp 30 yuan/kg, Dandong City, Liaoning Province; 25 yuan/kg of rock shrimp in Enshi City, Enshi Tujia and Miao Autonomous Prefecture, Hubei Province; Grass shrimp in Changning County, Yibin City, Sichuan Province is 23.33 yuan/kg; Xiuying district Rock Shrimp 55 yuan/kg in Haikou, Hainan; 50 yuan/kg of rock shrimp in Meilan District, Haikou City, Hainan Province; 30 yuan/kg of grass shrimp in Liwan District, Guangzhou City, Guangdong Province. (This price is for reference only, and the details are subject to the field. )

Third, the difference between sea shrimp and green shrimp

1. The sea shrimp is mainly white shrimp, and the green shrimp is mainly macrobrachium. All of them belong to the family Brevisceraceae, which are similar in appearance, but quite different in taste and texture, so the market price is also quite different.

2. White shrimp, also known as Shaking Shrimp, Jiang Tu Shrimp and Yingchun Shrimp, has a shell on its body surface, and the second shell on its abdomen covers the first shell, with two short whiskers. The body is white and transparent with a little blue or red spots. The shell is thin, but hard. The shrimp body is slightly flat and the shell ridge is slightly angular.

3. Giant-arm shrimp, also known as green shrimp and firewood shrimp, is also covered with a layer of carapace, but there are claws in front of its feet, especially the second pair of feet, which are thick and more than twice as long as its body, and are strong and powerful, and can be used to attack and defend against enemy damage. The shrimp body is turquoise with brown stripes, the shell is thin and soft, the shrimp body is cylindrical, and the shell ridge is round. Shrimp meat is translucent and emerald-colored. The cooked double white shrimp is crystal clear, and the taste is more elastic and tender.

Fourth, the feeding method of freshwater shrimp

1, according to the nutritional requirements of freshwater shrimp at the same growth stage, make a good feed combination and feeding. Shrimp larvae and larval stages feed on rotifers, cladocera, copepods and aquatic insects larvae, while adult stage feeds on animal feed and plant feed. After releasing shrimp seedlings and shrimp seeds, appropriate fertilization should be applied to improve water quality.

During the fast growth period of 8- 10, feed more bran, bean cake and green feed, and feed animal feed appropriately. From June 1 1 to June 65438+February, the green shrimps were mainly fed by animals.

2. Feed the prawns according to their living habits and feeding characteristics. Shrimp mostly forages at night, and have the habit of fighting for food and gluttony. Feed is fed once a day in the morning and afternoon, mainly in the afternoon, accounting for 70% of the whole day's feed; Adopt the method of feeding at fixed quality, fixed quantity and fixed time, and feed them sufficiently and evenly to ensure that every shrimp is full and avoid competing for food.

3. Feed prawns reasonably according to the weather, water quality changes and the feeding situation of prawn activities. The suitable water temperature for the growth of freshwater shrimp is 20 ~ 32℃. From August to1October, the intake of freshwater shrimp is relatively large, and the daily feeding amount can be arranged according to 6% ~ 10% of the shrimp weight in the pond, and the total dry feed or compound feed is 2% ~ 4%, which can be appropriately increased or decreased according to the weather, water quality and shrimp foraging situation.

Continuous rainy weather or water quality is too strong, you can feed less and feed more when the weather is good; Feed less shrimp when molting, and feed more after molting; Shrimp should be fed less during the onset season and more during normal growth. It is necessary to make shrimp eat well, reduce waste and improve feed utilization.