CATDOLL : CATDOLL: How to choose swimming crab?

How to choose swimming crab?

"The tips for selecting swimming crabs are deep lines, white belly, green shell and a non-black crab mouth." Industry insiders pointed out that the quality of crab meat can be judged by the naked eye, it just requires a little professional knowledge.

Although all swimming crabs in the Shanghai market are "East China Sea swimming crabs", their specific origins are also particular. The swimming crabs in the Shanghai market mainly come from Chongming, Yangshan Deepwater Port, and Zhoushan and Shengsi in Zhejiang.

Another small part comes from Qidong, Jiangsu.

These swimming crabs from different origins have different meat textures, tastes and prices.

"The swimming crabs from Chongming, Yangshan, and Shengsi in Zhejiang are 'deep-water crabs', with fuller meat, more delicious taste, and slightly higher prices. The swimming crabs from Zhoushan are commonly known as 'drift net crabs', or 'shallow water crabs', and their quality is not as good as 'deep-water crabs'."

"After September 15, the production of swimming crabs will gradually decrease. Currently, most of the crabs on the market are 'white crabs', while the greasy 'roe crabs' will not be available until around November, when the northwest wind blows." Zhou Qiuping pointed out that around September 15, hairy crabs will also gradually be available. "By then, there will be a short period of time when swimming crabs and hairy crabs are available, and citizens can enjoy two completely different but equally plump crab meats at the same time.

Additional information

Nutritional Value

The meat of swimming crab is tender and white, rich in protein, fat and various minerals. Swimming crabs are the strongest in the winter, generally weighing about 250 grams, and the largest can reach 500 grams. Female crabs are covered with red cream and taste excellent. Swimming crabs can be eaten fresh, steamed, fried, or stir-fried, or cut in half and stewed with bean paste, or stir-fried with crabs and rice cakes, pickles, and tofu. They are common dishes on the tables of residents in coastal areas.

It can also be pickled, that is, fresh swimming crabs are soaked in brine and can be eaten after a few days, commonly known as "fresh wind grabs crabs". In the past, fishermen often selected live crabs with full roe because of the high yield of swimming crabs, picked out the roe and put it into a bowl, and solidified it in the wind and sun to make "crab roe cakes". The flavor is particularly good, but the yield is small, and it is difficult for ordinary people to taste it.

Reference source: Baidu Encyclopedia - Swimming Crab

Reference source: People's Daily Online - East China Sea swimming crabs are entering the peak season, with hundreds of tons sold every day. How to choose them?

Where are swimming crabs produced and how to raise them?

Swimming crabs are an important economic crab species in China's coastal areas. They grow rapidly and are an important aquaculture species in China's coastal areas. This article introduces where swimming crabs are produced and how to raise them, for reference by interested friends.

1. Where are swimming crabs produced?

The production areas of swimming crabs are mainly distributed in the waters of coastal areas such as Liaoning, Tianjin, Shandong, Jiangsu and Zhejiang. From south to north, March to May and September to October are the peak production seasons, and the output in Bohai Bay and Liaodong Peninsula is relatively high in April and May.

The pH value adaptation range of swimming crabs is 7.5-8, the dissolved oxygen cannot be lower than 2 mg/L, the chemical oxygen demand generally does not exceed 12 mg/L, the hydrogen sulfide does not exceed 0.2 mg/L, and the half-lethal concentration of copper ions within 24 hours is 58 mg/L.

2. Can swimming crabs be artificially cultivated?

Swimming crabs can generally be cultivated artificially. Because the meat of swimming crabs is relatively fat, tastes good and has relatively high nutritional value, they are loved by consumers.

How to raise three-simple stool tung and swimming crab

1. Prepare the pond (1) Swimming crabs are best suited to growing in seawater. You need to prepare salt water with no pollution. When filling the pond, the water depth should not exceed 6 meters.

(2) You can put some small fish and shrimps into the water to provide natural food for swimming crabs.

(3) Swimming crabs like to bask in the sun on the shore. When building a pool, you can leave a portion of land area to satisfy their preference. You can spread a proper amount of sand on the land to satisfy the swimming crabs' habit of throwing sand.

2. Pond disinfection (1) Before the seedlings are put into the water, the water in the pond should be drained and the silt at the bottom should be removed, leaving only a small amount.

(2) You can place some containers such as water bottles at the bottom of the pond to provide swimming crabs with more suitable adjustment space.

(3) After cleaning the pond, you can add an appropriate amount of water and fertilizer. After a few days, you can release the swimming crab seedlings.

3. Release of crab seedlings (1) As crabs like to fight for food, when releasing the seedlings, they should be fed separately according to their size.

(2) The temperature of the pool cannot be lower than 20°C and should not fluctuate too much. The water temperature must be strictly adjusted according to changes in air temperature.

4. Daily Management (1) In addition to adjusting the water temperature in a timely manner, the water in the pond needs to be replaced in a timely manner. In the hot summer, the water needs to be replaced twice a week.

(2) When the weather is hot, the appetite of swimming crabs will decrease. You can feed them some small fish and shrimps that they like to maintain their nutritional needs.

(3) Pay attention to the oxygen content in the water pool. When there is too little oxygen, it may cause large-scale death of swimming crabs.