CATDOLL : CATDOLL: Is it possible to raise tiger shrimp and South American shrimp together?

Can tiger shrimp and South American shrimp be raised together?

Tiger shrimp and South American shrimp cannot be mixed, they are not the same species, so it is best not to mix them. South American white shrimp can be mixed with desert flounder. Generally, 40,000 to 60,000 South American white shrimp fry, 100 to 150 desert flounder fingerlings, and 100 silver carp fingerlings can be put into each acre of water surface.

It's best not to mix.

What social problems does the high-priced shrimp incident in Qingdao reflect?

Since the mid-1990s, agricultural products have shifted from surplus in good years to surplus all year round, and from surplus of major agricultural products to general surplus of most agricultural products. The problem of structural oversupply of agricultural products in the world has become increasingly prominent, and fishery products, which account for one-tenth of agricultural output value, are no exception. The structural adjustment of fishery in the new era is market-oriented, analyzing the characteristics of the aquatic product market, giving full play to comparative advantages, following its changing laws, predicting the future development trend of the aquatic industry, and formulating corresponding countermeasures to increase production and income, survive and develop in competition. 1. Analysis of the freshwater aquatic product market A comprehensive analysis of the market conditions of aquatic product wholesale markets in and outside the province in 2002 generally showed the following characteristics: First, after the low-end four major carps made a significant contribution to the people's vegetable basket, the volume has increased and the price has fallen in recent years, and the price increase has been "unable to reverse the situation". Second, the prices of famous fish such as California perch and mandarin fish have the cyclical nature of market adjustment. Although they have been stable and falling in recent years, they can still maintain a certain price advantage. Third, the turtle consumption market is becoming more mature: the turtle price is stable, the sales volume has increased, and the benefits of enterprises (farmers) have improved. For example, the loss rate of turtle farms (households) in Tonglu County has dropped from 70-80% last year to only 10% this year. The price difference between greenhouse turtles and outdoor pond turtles has always been 4-5 yuan/kg. Consumers have entered the stage of quality consumption, and the sales volume of branded turtles has increased and the price has remained stable. Fourth, the secondary differentiation of river crab market prices is becoming increasingly obvious: on the one hand, the price of large-sized high-quality river crabs is still high, on the other hand, the price of small-sized crabs has always been at a low price, and even during the peak period, the price of small-sized river crabs (12 yuan/kg) is lower than that of large-sized crayfish (16 yuan/kg). Fifth, export-oriented varieties, such as eels, shrimps, and tilapia, are affected by the international market, and the market reflects the ups and downs of prices, among which shrimps are the most obvious. Sixth, low-end varieties such as the four major carps, river crabs, and varieties that cannot naturally overwinter in the region often plunge in price in October and November every year due to oversupply of products. Seventh, with the improvement of aquatic technology, the north has vigorously developed freshwater aquaculture. Now, more fish are transported from the south to the north, while the amount of low-quality fish transported to the north is gradually decreasing. Eighth, the fishing ban has little impact on the freshwater market price. II. Development ideas and main countermeasures 1) Master market information, do a good job in market positioning, product positioning and enterprise positioning, adjust the aquaculture structure in a timely manner, and achieve "what others don't have, I have, what others have, I have earlier, I am better than others, and I am cheaper than others", and realize four changes in business philosophy: 1. Change the traditional fishery business philosophy, from the habit of "fishing-trading" to "trading-industry-fishing". Increase the cultural content of products and implement brand strategy. Establish and enhance the value of corporate and product image, improve reputation while increasing popularity, and obtain both brand effect and scale effect. 2. Change the varieties of traditional aquaculture, from low-grade, low-value, and low-efficiency varieties to famous, high-quality, new varieties, and export-oriented aquaculture varieties. Expand the product market and choose a sales method suitable for the development of the enterprise. 3. Change the traditional breeding mode, that is, change from the traditional way of stocking at the beginning of the year and harvesting at the end of the year to timely stocking and timely listing, so as to avoid the concentrated sale of products during the period of low aquatic product prices each year. 4. Change the backward breeding methods, from the low-input and low-output method of feeding with pig and duck feces to the healthy breeding method of feeding high-quality complete feed, and actively develop personalized breeding. (II) Rely on scientific and technological progress to develop aquaculture. The competition in the aquatic market is becoming increasingly fierce, and the breeding environment is getting worse and worse due to the influence of "three wastes". New problems, new varieties, and new technologies emerge in an endless stream. Only those who are good at learning, studying new problems, accepting new things, using and using talents, and mastering information can be invincible in the competition. 1. Implement aquatic seed and seed engineering, establish introduction and breeding bases, and introduce, breed, and promote high-quality seed and seed to improve survival rate and reduce production costs. 2. Promote pollution-free ecological and healthy breeding technology, and use the results of immunity and biotechnology to control diseases and repair the breeding environment. For example, using microbial preparations to improve the breeding environment, improve the metabolism of biological organisms, regulate the internal environment, activate the immune system, improve biological immunity, and other methods, to slow down the ecological disease prevention, reduce the incidence, and improve the survival rate. Use drugs scientifically, select high-quality feed with balanced nutrition that meets the growth of aquatic products, strengthen quality management, and produce pollution-free and green products with specifications and quality that meet market needs. 3) Standardization, intensification, and integration of trade, industry, and fishery are the only way for the development of fisheries. Our city currently has 16 municipal leading enterprises containing aquatic products or aquatic products, and various aquatic industry associations are also increasing. The fishery is gradually developing in the direction of scale, intensification, and integration of fishery, industry, technology, and trade. However, there are still many forms of family farming, which are difficult to get rid of the habit of traditional farming, resulting in low technology and high costs, scattered breeding varieties, products relying on intermediaries for promotion, and low productivity and low efficiency. In today's new trend of aquaculture, it has gradually become unsuitable for the development of the aquaculture industry. In order to adapt to the requirements of the development of the aquatic industry after our entry into the "WTO", and to withstand the competition of the redevelopment of aquatic products after the adjustment of agricultural structure, we should make the transition from individual farmers with low breeding efficiency to farmers of moderate scale, and from small-scale farmers with low efficiency, low technology and lack of funds to large-scale farmers with technology, funds, breeding level and moderate scale, so that large-scale farmers or companies can use their own advantages (such as funds, varieties, technical projects, sales, etc.) to combine with the majority of farmers and farmers of moderate scale in terms of seedlings, feed rationing, disease prevention and control, breeding technology, production standards, etc., to develop intensive management, form a modern breeding system with one-stop production, supply and marketing services and multiple breeding forms, and then push the integration of fishery, technology and trade in our city's aquaculture to a new height. This is the general trend of the development of aquaculture in the future. 3. Promotion of breeding varieties Reviewing and summarizing the situation of aquatic breeding varieties last year (2002), in addition to turtles, shrimps, river crabs and other varieties, we believe that the following varieties have certain development potential. Now we introduce them one by one and put forward some reference opinions for peer communication. 1) The market price of local indigenous species is relatively high (wholesale price is 20-40 yuan/kg), which is in line with people's consumption habits and widely accepted by consumers. There is no need for market promotion. In recent years, artificial breeding has been successful, and breeding technology has gradually matured. Some species are suitable for breeding by all kinds of farmers. 1. Cockroach Red N Also known as white stripes, it is large, fast-growing, white meat, tender and delicious. It is a top-grade fish. It is very delicious to eat fresh or pickled. The resources of Cockroach Red N in lakes and reservoirs are decreasing and cannot meet market needs. It is suitable for pond breeding, mixed breeding and cage breeding. The output of cage breeding can reach 10,000-50,000 jin/mu. He Guoping, the owner of Liangzhu Special Aquatic Seedling Breeding Base in Yuhang District, mainly breeds and mixes Cockroach Red N in 112 mu of ponds, combining market sales with fishing. In 2002, the average net profit per mu was 9,622.67 yuan, with high economic benefits. Fish supply time and price: Water flower fish from the end of May to the beginning of June, ≤100 yuan/10,000; summer flower fish from June to July, price ≤0.10 yuan/tail; winter slice fish from November to February, 0.05 yuan/cm. The wholesale price of commercial fish in the market is 36 yuan/kg, and the market price in Shanghai and Jiangsu is high. 2. Flower fish bones are commonly known as Yanghua fish, Mahua fish, Jiazhu, Jilang fish, etc. It is a relatively precious small and medium-sized fish in my country's freshwater waters. Its meat is tender, delicious, and has a high meat yield. The size of adult fish can reach about 0.5kg, and the market price is as high as 22 yuan/kg. It grows in the middle and lower layers of the water body and is a mild fish that mainly feeds on invertebrates. It also eats artificial compound feed under artificial breeding conditions, and maintains a high level of feeding even in winter. It has a long growth period and a high survival rate. It can be raised alone or as a set of species. If it is raised exclusively in summer flowers, the survival rate can reach 80%. Summer flower intercropping grows rapidly in the shrimp breeding pond, and 60% can reach the market specifications in the same year. The breeding benefits are significant, and it is currently an ideal mixed breeding variety for shrimp and crabs. Fish supply time and price: Water flower from April to May, 200 yuan/10,000; summer flower from May to June, 0.25 yuan/tail; winter slice from November to February, 0.1 yuan/cm. The wholesale price of commercial fish market is 20 yuan/kg 3. Yellow catfish, also known as yellow bone fish and yellow wax fish, is a carnivorous, delicate meat, delicious small and medium-sized economic fish with strong disease resistance and excellent market sales in our province. At present, the main modes of artificial breeding of yellow catfish are: mixed breeding, intercropping, main breeding and cage breeding. However, in terms of its ultimate comprehensive economic benefits, main breeding is a relatively good model. The advantages of this model are: high group yield, easy control of the breeding process, easy disease prevention, short growth cycle, and convenient fishing. The only disadvantage of this fish is that the survival rate of breeding is low, and the breeding technology needs to be further improved. Fish species supply time and price: Water flower June-July, 300 yuan/10,000; summer flower July-August, 0.15 yuan/tail. Commercial fish price 24-32 yuan/kg. 4. Mandarin fish is one of the precious fishes. Its meat is tender, thick, less bone, rich in nutrition. Every 100 grams of fish meat contains 18.5 grams of protein and 3.5 grams of fat. It also contains relatively rich calcium, phosphorus, iron, etc. It is deeply loved by consumers. The wholesale price of commercial fish market is more than 56 yuan/kg. Bait is the key to breeding mandarin fish. It can be raised exclusively or mixed. If it is raised well, the economic benefits are considerable. 5. Round barrel mandarin fish, also known as spotted mandarin fish, is a recently developed variety. The market price is more than 2 times that of Culex chuatsi. It can be eaten fresh "fish". No viral diseases have been found so far, and it is easy to breed on a large scale. It can be raised exclusively in ponds, mixed or caged. Fish species supply time and price: Summer flower May-June, 2.5 yuan/tail. Commercial fish is 90 yuan/kg. 6. Catfish include yellowtail catfish and fine-scaled catfish, commonly known as yellowtail catfish. Catfish are famous native fish in Qiantang River and are also ideal breeding varieties. The fish has tender meat, rich nutrition, fast growth, and mixed feeding habits. They are bottom-feeding fish and have large market sales. They can be raised as the main fish or mixed. They do not have high requirements for the water environment and the breeding technology is easy to master. They can be cultivated as fish species in the same year and raised as commercial fish in the next year, or the summer flowers of the same year can be directly put into the fish pond for breeding, and some can reach edible specifications. Artificial compound feed can be fed in breeding, and appropriate fertilizer can be applied in mixed breeding to increase natural bait and increase breeding output. Fish species supply time and price: Summer flowers in mid-May, 400-600 yuan/10,000 tails. The wholesale price of commercial fish in the market is 20 yuan/kg. 7. Qiantang River Triangle Bream (Qiantang River Triangle Bream) It is a precious fish unique to the Qiantang River system. It has tender meat, rich nutrition and grows fast. Its feeding habits are basically the same as those of the roundhead bream, but it has higher requirements for water quality, and the dissolved oxygen requirement is above 3-4 mg/L. It is cultivated as seedlings in the first year and commercial fish in the second year. The commercial specifications are preferably more than one catty. The breeding feed is generally based on compound feed. Fish supply time and price: At present, the fish with a specification of 30 tails/500 grams is 0.50 yuan/tail. Commercial fish is 20 yuan/kg. II) Introduced varieties (domestic and foreign) All are famous varieties in the place of production. The local market has different acceptance levels. Farmers can choose suitable varieties for breeding according to their own conditions. 1. Whiteleg shrimp This is a widely accepted breeding variety, which has a great tendency to replace Macrobrachium rosenbergii. Especially because of its short breeding cycle and large profit margin, it is a new highlight of the breeding industry in the past two years. However, one of the most fatal drawbacks of this variety is its latent viral diseases (mainly Taura virus disease and white spot syndrome), which are very easy to break out under certain conditions. Therefore, farmers should not be blindly optimistic about this, but should actively adopt healthy breeding methods and develop the market for processed products. 2. Tench This fish is only found in the Irtysh River and Ulungur River basins in Xinjiang in my country. It is one of the main freshwater aquaculture economic fish in European countries and is known as the royal pet fish in Europe. The meat of tench is extremely delicious, and its unsaturated fatty acids are 3 times higher than those of other freshwater fish. This fish is a bottom-dwelling fish with a miscellaneous diet. It feeds on plant residues and aquatic insects. It is cold-resistant, disease-resistant, easy to transport over long distances, and has good market acceptance. It can eat compound feed and has a strong adaptability to changes in dissolved oxygen in water. It was introduced in Guangdong Province in just two years. The market price is not cheap (about 80 yuan/kg). It has already emerged as a new force. The breeding promotion speed is very fast and has become a major industry in the freshwater aquaculture industry. The breeding of this fish has just started in Zhejiang Province. It can be raised to about 200 grams in the same year (its listing specifications require more than 250 grams). The prospects are promising. If it can open up sales channels in other provinces or even abroad, its development prospects will be very impressive. Fish supply time and price: Summer flowers in mid-May, 0.5-0.8 yuan/tail. Commercial fish 60 yuan/kg. 3. Yellow catfish, also known as river catfish, commonly known as river catfish, belongs to the genus Yellow catfish. It is the largest and fastest growing species in this genus. Usually the individual is about 250 grams, and the largest individual is more than 1 kilogram. Under natural conditions, one-year-old fish can grow to 20-50g, and two-year-old fish can grow to 50-150g. The fish has tender meat and delicious taste. It looks similar to yellow catfish, with a smooth body surface and no scales. It is an omnivorous fish that mainly eats insects. Under artificial breeding conditions, its diet is easy to change, and compound feed is easy to develop. Artificial breeding trials show that one-year-old fish can grow to 150-300g, fully reaching commercial specifications. Pond-raising of P. vachelli can increase the production of P. vachelli by about 10-12.5kg per mu without affecting the production of the main fish. When it is the main breeding, 250-350kg of commercial fish can be produced per mu. The price of commercial fish in Hubei, the place of origin, is 40 yuan/kg, and the price of commercial fish in Guangzhou is as high as 60 yuan/kg. 4. Freshwater sharks are commonly known as tiger sharks. The breeding technology is simple, the feed requirements are not high, the meat (no intramuscular spines) is tender and delicious, the growth rate is fast, and the economic benefits are significant (the market value of commercial fish is 40-50 yuan/kg). Among them, the price of white sharks is higher than that of blue sharks. In addition to being used as edible fish, freshwater sharks also have high ornamental value, and their cartilage tissue contains chondroitin sulfate with high nutritional value and medicinal value. It is a better freshwater breeding variety. The disadvantage is that it cannot naturally overwinter in this area. At present, freshwater sharks have set off a breeding boom in southern my country, and will continue to show good market prospects in the next few years. 5. Milkfish was introduced from Indonesia by Taiwan Province in the 1970s and artificially bred successfully. It was successfully introduced to Guangdong for trial breeding in 1998. It can grow well in both salt and fresh water and grows fast. Generally, 5 cm seedlings can reach the market specifications (more than 500 grams) after three and a half to four months of breeding. It is a herbivorous fish with a wide source of feed. It is suitable for cage breeding, single breeding in special ponds, and mixed breeding in ponds. It is especially suitable for mixed breeding in white shrimp ponds. It can increase per mu yield and greatly reduce shrimp diseases. It is a breeding model that is very worthy of promotion. The disadvantage is that it is a fish in subtropical waters and cannot naturally overwinter. In 2002, a farm in Yuhang introduced summer flowers for breeding. Before wintering, the tail weight was about 450 grams, and the wholesale price was 40 yuan/kg. The head, abdomen, back and intestines of this fish can be eaten in different ways. If it can be produced, processed and exported on a large scale, it is a fish with development potential. 6. Golden Catfish This fish has a golden body color and is an excellent fish breeding variety of the catfish family. It has the advantages of good meat quality, fast growth, wide diet and strong adaptability, and has high economic benefits in artificial breeding. It is resistant to low oxygen, has strong disease resistance, is adaptable to the environment, is omnivorous and animal-oriented, suitable for highly intensive breeding in special ponds, and the yield per mu can reach more than 5 tons. In natural waters, it mainly feeds on small fish, shrimps and aquatic insects, benthic animals and corrupted livestock and poultry carcasses. Under artificial breeding conditions, it can feed on various commercial feeds. 7. Barbs are distributed in various water systems south of the Yangtze River. It is a large and high-quality economic fish in my country's rivers. It has a beautiful body shape, bright body color, good meat quality and delicious taste. It is a medium-to-high-quality edible fish, and can also be used as a good ornamental fish. It has a wide range of suitable temperatures, few diseases, and a wide range of diets. It is mainly herbivorous and feeds on other things. The main food is aquatic plants, organic debris, etc., and it also likes to eat vegetables, bran, rice bran, peanut bran, artificial compound feed, etc. Its breeding has just started in recent years. Due to the shortage of seedlings and high prices, the breeding profit is much higher than that of conventional farmed fish. (III) Ornamental species With the continuous improvement of people's living standards, the development speed of ornamental leisure fisheries is very amazing. The introduction, development, breeding and production of normal temperature and tropical ornamental fish have become one of the main industries in aquaculture. In large cities such as Guangzhou, Tianjin, Beijing, Shanghai, and Hangzhou, the production and sales of ornamental fish are very huge, and its prospects and benefits are very considerable. In recent years, my country's ornamental fish exports have increased year by year, and it has become one of the major exporters in Asia. Red pattern brocade is one of the medium-sized normal temperature ornamental fish. It is an ornamental fish bred by hybridization of goldfish and crucian carp. It has a variety of body colors, including red and white, red and black, blue bottom red and white, etc. The tail is like a goldfish and the body is like a crucian carp. It has a beautiful shape, bright colors, gentle temperament, easy to raise, and a fast growth rate. It is omnivorous and resistant to low oxygen, suitable for high-density intensive breeding. It occupies an important position in the ornamental fish market, with a large sales volume in the local market. It is one of the ideal breeding varieties for developing urban agriculture, developing leisure fisheries, and increasing farmers' income. Fish species supply time and price: Summer flowers at the end of April and the beginning of May, 350-400 yuan/10,000 tails. Commercial fish are priced according to quality, generally 12-14 yuan/kg. 2. Koi is a large normal temperature ornamental fish and the national fish of Japan. This fish system was introduced from China. After decades of hybridization and breeding in Japan, 13 major series of koi ornamental fish were formed. The more famous ones are Taisho Sanshoku and Showa Sanshoku, etc. Hundreds of varieties. The existing koi in my country were introduced from Japan. At present, koi has become the most important and common ornamental fish in China. It has multiple strains, different body colors, and is easy to raise. Fish species supply time and price: Summer flowers at the end of April and the beginning of May, 350-400 yuan/10,000 tails. Commercial fish are priced according to quality, generally 12-14 yuan/kg. At the 3rd Changchun Agricultural Expo in 2002, a pair of top-quality koi were sold at a sky-high price of 650,000 yuan. 3. Flower tiger is a high-end tropical ornamental fish. It is carnivorous, but also eats compound feed. It is easy to raise. When the water temperature is above 20℃, it has strong resistance to environmental stress. Fish species supply time and price: after mid-April, size: 5--8 cm, price: 2-5 yuan/tail. Commercial fish 10 yuan/tail (size 10cm/tail). 4. Golden crucian carp is a normal temperature ornamental fish. It has bright red body color, beautiful body shape and is easy to raise. Fish species supply time and price: Summer flower in late April and early May, 200--250 yuan/10,000 tails. Commercial fish 10-12 yuan/kg. IV) Rare aquatic animal species These species are all protected by the state. Farmers must go through legal breeding and sales procedures. 1. Sturgeon In recent years, the price of sturgeon has fluctuated the most among aquatic products. The current poolside delivery price varies from 20 to 120 yuan per kilogram according to different species. Sturgeon has a very fast growth rate, short cycle, small feed coefficient and low cost. It is a world-recognized famous fish. If the management department can further clear the domestic and foreign sales channels on the existing basis, its sales volume will inevitably grow rapidly, and the price is expected to stabilize or rise. It is also worth mentioning that the investment in seedlings accounts for a large proportion of sturgeon breeding. It is best for farmers to cultivate seedlings by themselves, so the cost can be greatly reduced. 2. Chinese rosy barbel is a national second-class aquatic protected animal with a beautiful body. It can be used as both ornamental fish and edible fish. The rosy barbel has delicious meat, gentle temperament, strong vitality, rapid growth, omnivorous, cold-resistant, and is most suitable for mixed breeding. The main disease threat of this fish is gill rot, especially when the seedlings are 3-4 cm, you should pay close attention to the infection of Aeromonas. Due to the limited number of seedlings, the price of this fish has been very stable for several years, and the economic benefits are very considerable. Especially in mixed breeding in eel ponds, very good results have been achieved. Raised in large ponds, as long as there is enough bait, it can reach about 1 kilogram in one year. In addition, there are Taihu white shrimp, sunfish, sweetfish, river perch, American striped bass, Australian croaker, Australian silver perch, rainbow snapper, longnose squid, freshwater grouper, channel forktail tuna, red tuna, catfish, turtles and other species. Farmers can make decisions based on the degree of market recognition, adaptability to the local environment and their own economic capabilities.