CATDOLL : CATDOLL: Biological habits of Zhoushan large yellow croaker

1. Biological habits of Zhoushan large yellow croaker

Large yellow croaker is a warm-temperate near-shore schooling migratory fish, mainly living in the middle and lower layers of coastal and offshore waters within 80 meters. Spawning fish are afraid of strong light, like to go against the current, and prefer turbid waters with low transparency. They tend to float at dawn, dusk or high tide, and sink during the day or low tide. Adult fish mainly feed on various small fish and crustaceans (shrimp, crab, mantis shrimp). The feeding intensity decreases significantly during the peak reproductive period; the feeding intensity increases after the end of reproduction. The main food of young fish is copepods, mysid shrimp, and wood sparrows.

Large yellow croaker can make strong intermittent sounds and is also very sensitive to sound. Its main organ of sound production is the swim bladder and the vocal muscles on both sides. When the vocal muscles contract, they compress the internal organs and make the swim bladder resonate and produce sound. During the reproductive season, the fish make "cluck" and "woooo" sounds all day long, and the sound is rare among fish. This kind of sound is generally believed to be a means for fish to communicate, and it serves as a signal for fish to gather during the reproductive period. Chinese fishermen have long used this habit to judge the size, water layer and location of large yellow croaker schools to facilitate fishing.

Large yellow croaker has high requirements for dissolved oxygen, generally above 4 mg/L. The critical value of dissolved oxygen for young fish is around 3 mg/L, and for juvenile fish it is around 2 mg/L. Therefore, during artificial breeding, especially during cultivation, special attention should be paid to keeping the dissolved oxygen level above 5 mg/L. Otherwise, it will easily cause lack of oxygen and floating of the fish, leading to death.

2. On which stream is China's Zhoushan fishing ground built?

China's Zhoushan Fishery is built east of Hangzhou Bay.

Zhoushan Fishery is located in northeastern Zhejiang, east of Hangzhou Bay and southeast of the Yangtze River Estuary, with a latitude of 29°30′～31°00′ north latitude and 120°30′～125°00′ east longitude, covering an area of ​​about 53,000 square kilometers.

It is the largest fishing ground in China and the traditional operating area for fishermen from Zhejiang, Jiangsu, Fujian, Shanghai and Taiwan. The main fisheries are large yellow croaker, small yellow croaker, hairtail and cuttlefish.

Resource advantages:

Since its development, Zhoushan Fishery has been a common fishing ground for coastal fishermen. Since liberation, the number of fishing boats from Zhejiang, Jiangsu, Fujian Province and Shanghai coming to Zhoushan Fishery has continued to increase, and some fishing boats from Liaoning, Hebei, Shandong, Tianjin and other provinces and cities have also come to Zhoushan Fishery to fish.

In the 1960s and 1970s, there were 10,000 fishing boats and more than 150,000 fishermen gathered in Shengshan Fishing Ground to catch winter hairtail during the peak season. The central base of the fishing ground is located in Shengshan. Due to the intersection of the Taiwan warm current and the coastal cold current, the fishing ground is rich in bait, providing a good material environment for local aquatic animals.

3. Zhoushan is one of the four largest fishing grounds in the world. Besides seafood noodles, what else is delicious in Zhoushan?

Zhoushan is a natural coastal fishing ground with numerous delicious foods. Seafood noodles is just one of them. Here I would like to share with you some of the foods you cannot miss when you arrive in Zhoushan.

1. Zhoushan Hairtail

Zhoushan is one of the four largest fisheries in the world, and hairtail is one of the four largest economic fish species in Zhoushan fishery. It has always been well-known and well-recognized by consumers. Zhoushan hairtail is highly flexible and tough, rich in protein, and has extremely high nutritional value. In Zhoushan, the common cooking methods for hairtail are braised, steamed, and salted. Hairtail can be found in almost all restaurants in Zhoushan.

2. Zhoushan Yellow Croaker

Zhoushan is one of the main production areas of Chinese yellow croaker, providing more than 100,000 tons of high-quality yellow croaker products to domestic and foreign consumers every year. Zhoushan yellow croaker is golden in color, tender in texture, and high in calcium. In ancient times, it was a tribute to the palace and a must-have dish for the emperor to entertain his ministers. Fresh Zhoushan yellow croaker can be cooked in a variety of ways, whether it is braised or steamed, it is very delicious.

3. Zhoushan Grouper

Grouper is one of the most popular marine fish. It is loved by consumers for its delicious meat, low fat and high protein. Zhoushan is one of the famous grouper breeding bases. The grouper produced every year is sold at home and abroad and made into various delicacies. When you come to Zhoushan, you must try the famous dishes made from fresh grouper, such as grouper with taro and steamed grouper.

4. Tiger fish tofu soup

Tiger fish tofu soup is a traditional delicacy in Zhoushan. Almost every fisherman in Zhoushan can make it and it is very popular among local people. Tiger fish is a common fish in the southeast coast. It has tender meat, low fat, delicious taste, no small bones, and is famous for its rich nutrition. When tiger fish and tofu are stewed together, the tofu absorbs the deliciousness of the fish meat. With the addition of appropriate seasonings, the soup becomes more mellow and fragrant, and the tofu is more delicious.

5. Stir-fried rice cake with swimming crab

The swimming crabs in Zhoushan are tender and delicious. Besides steaming, the swimming crabs fried with rice cakes are more popular among locals. The fresh swimming crabs and the soft and glutinous rice cakes create a unique taste. The salty and sweet taste is deeply favored by diners. If you haven't tried this method, it is recommended that you must try it when you arrive in Zhoushan.

6. Seafood noodles

Finally, let's talk about this popular noodle dish in Zhoushan: seafood noodles. Zhoushan has rich seafood resources and a wide variety of varieties. The seafood noodles made with these fresh seafood are really full of freshness. After eating a mouthful of noodles and drinking a few sips of fresh soup, you can really feel the taste of the sea. Zhoushan seafood noodles have smooth noodles, delicious soup, and are easy to make. Therefore, in Zhoushan, even ordinary families can make it, so it is the favorite noodle dish of ordinary people.

Have you tried all the above 6 delicious dishes in Zhoushan? When you come to Zhoushan, you must eat seafood to your heart's content. If you don't eat seafood, why come to Zhoushan? There are many more delicious dishes in Zhoushan. Welcome to leave a message to add more.

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Zhoushan also has delicious foods such as steamed mussels, yellow croaker dried fish, yellow croaker glue, braised pomfret, and fish skin dumplings.

Zhoushan also has delicacies such as barbecued yellow croaker, Zhoushan hairtail, smoked pomfret, red crab, and Guanyin cake.

Delicious food in Zhoushan includes yellow croaker, hairtail, barbecue, mussels, and bamboo shrimp.