CATDOLL : CATDOLL: What fish can be raised in blue potion aquaculture?

1. What fish species are farmed in Blue Potion Aquaculture?

Mini parrot fish. Blue water medicine is the common name for methylene blue. In order to prevent the occurrence of saprolegniasis, care should be taken to avoid damaging the fish body and parasite bites during operation, and a small amount of salt can be added to the water to inhibit the occurrence of saprolegniasis.

When the fish is found to be infected with Saprolegniasis, you can use: 1. Soak in 1-2ppm methylene blue solution for 20-30 minutes, or soak in 5ppm furazolidone solution, or directly sprinkle 0.02ppm malachite green solution or 0.3ppm formaldehyde solution into the aquarium to inhibit the growth of mold. You can also increase the water temperature to inhibit the growth of Saprolegnia. Install a 15-watt ultraviolet lamp on the top of the aquarium and irradiate it for several hours every day to effectively inhibit or eliminate the growth of Saprolegnia. 2. Soak in 3% salt water once a day for 5-10 minutes each time. 3. Soak in 2ppm potassium permanganate solution plus 1% salt for 20-30 minutes, or soak in 1-2ppm malachite green solution for 20-30 minutes.

2. What can be used to purify water for aquaculture fish?

Physical, chemical and biological methods can be used.

3. What should we do if fish get enteritis in aquaculture?

Prevention and treatment of fish enteritis:

(1) Do not feed spoiled feed. Feeding with green feed can help prevent enteritis.

(2) Regulate intestinal health. Adding Yucca schidigera extract to feed can inhibit the accumulation of ammonia nitrogen and nitrite, while improving the balance of beneficial intestinal flora, enhancing resistance and preventing the outbreak of enteritis.

(3) Maintain sufficient dissolved oxygen in the water, adjust the pH value of the water, and control the water temperature.

(4) When fish enteritis breaks out, it is important to adjust the water and improve the bottom first to prevent the disease from further deteriorating. When the condition is relatively mild, use amoxicillin + doxycycline hydrochloride for treatment. When the condition is relatively serious, use florfenicol + doxycycline hydrochloride for treatment.

In short, although fish are easy to raise, if diseases are not properly prevented and controlled, great losses will be caused. We should adhere to the principle of prevention is better than cure. Long-term use of Yucca extract can effectively prevent the incidence of enteritis, improve water quality, regulate the intestines, enhance physical fitness, and ensure high yield and high income of tilapia farming!

4. What varieties of aquatic fish are there?

Aquatic fish include abalone, grass carp, crucian carp, carp, silver carp, etc.

5. Which fish are special aquatic products?

Special aquatic fish should refer to farmed species other than conventional species (common fish and shrimp) that are farmed on a large scale, such as sea cucumbers, sea horses, sea urchins, jellyfish, economically farmed fish (rainbow trout, loach, catfish, mandarin fish, sturgeon, freshwater silver pomfret, tilapia, black snakehead, etc.), river crabs, frogs, and turtles, which are special farmed animals with relatively high economic value and relatively small farming scale.

6. Fish farming technology?

1.

Stocking time selection: Fish should be released on sunny days when the temperature is not too low. Generally, the temperature should be between 2℃ and 5℃. At this stage, the fish scales are tight and the activity is small. It is not easy to injure the fish during fishing, transportation and stocking operations, which can reduce the morbidity and mortality of fish. It is easy to frostbite the fish on rainy days with low temperature or snowy, frozen and windy weather; when the temperature is too high, the fish scales are loose and the activity is large, which is easy to injure the fish during operation.

2.

Stocking of fish: Before stocking the fish, check whether the drugs have lost their effectiveness after pond cleaning. In early spring, the water temperature is low and the toxicity disappears slowly. Water should be taken in advance and test fish should be released. According to the stocking plan, individual size, density, and matching species and specifications, the fish that can be released at one time should not be released in batches, so that the fish can adapt to the environment, start eating early, and promote growth. At the same time, [Gold Iodine] should be used for drug disinfection when stocking fish.

3.

Feeding at the right time When the water temperature rises to 810℃, fish begin to eat, and the amount of food intake gradually increases with the increase of water temperature, so they should be fed in time. Feed once a day or every other day, and choose to feed at noon on a sunny day; as the water temperature continues to rise, the number of feedings can be increased to twice, that is, feeding once in the morning and once in the afternoon. Feeding should adhere to the principle of four determinations (timing, quality, positioning, and quantity), and the specific daily feeding amount should be flexibly controlled according to the weather, water temperature, and the feeding situation of fish. For grass carp weighing more than 1 jin, it is recommended to feed Da Beinong high-grade expanded feed 8103 in the early stage of feeding; for small grass carp mode, it is recommended to feed Da Beinong microecological juvenile fish special feed [Intestinal Liver Health], and the feeding rate is controlled at about 0.5%1%. This product is rich in nutrients and probiotics, which can quickly repair the fish intestines, restore the physique, and improve immunity.

7. Are there any good ideas for aquaculture (various fish) in hotels?

It is not clear that if you keep it in a fish tank, do not use tap water. If you use tap water, you must expose it to the sun for 2 days and add 0.01% edible salt to the water. In addition, change 30% of the water every 3 days, so you can safely keep freshwater fish. As for saltwater fish, I don't know much about it so I won't comment.

8. How to issue an invoice for live aquatic fish?

Live aquatic fish are agricultural products and are duty-free products with a zero tax rate.

9. What is the distribution of economic fish species in China’s aquatic products?

The main economic fish species in China's water systems are:

(1) Heilongjiang River System: The Heilongjiang River is the northernmost river in my country, with a total length of 4,485 km, and a section of the river within my country and on the border of 2,965 km. Its main tributaries include the Songhua River, the Wusuli River and the Huma River, and its main lakes and reservoirs include Hulun Lake, Songhua Lake, Xingkai Lake, Jingbo Lake and Wudalian Lake. There are about 100 species of fish, the main species of which are silver carp, grass carp, bighead carp, carp, crucian carp, black carp, silver carp, bighead carp, and mandarin fish; there are many cold-water fish, such as lamprey, taimen, fine-scaled fish, whitefish, pike and burbot; as well as endemic species such as Acipenser schrenckii, sturgeon and silver carp, and the famous migratory fish salmon.

(2) Liaohe River System: The Liaohe River is located in the southern part of Northeast my country. It flows through Hebei, Inner Mongolia, Jilin and Liaoning, and flows into the Bohai Sea. It is 1,430 km long. The upper reaches are the two major tributaries of the East and West Liaohe Rivers. The Dahuofang Reservoir, with an area of ​​112 m2, is built on the Hunhe River, a tributary of the Liaohe River. There are 90 species of fish, and the number of cold-water fish has decreased significantly. Only lampreys and variegated sculpins are left. The common species in the south, such as yellow eels, sand tang snakeheads and spiny loaches, are distributed in the Liaohe River, but not in the Heilongjiang River system. The main economic fish are carp, crucian carp, yarrow and catfish; the common fish are yellow catfish, bream, bream, red-eyed trout, black carp and black snakehead.

(3) Haihe River system: This is a large river located in Hebei Province, originating in the northern part of Henan Province, with a total length of 1,090 km. Its main tributaries include the Baihe River, Yongding River, Daqing River, etc. The largest affiliated water body is Baiyangdian, with an area of ​​366 km2. There are more than 1,000 reservoirs of various sizes built, including the Guanting Reservoir (144 km2) and Miyun Reservoir (186 km2). There are about 100 species of fish, and the important economic fish include carp, crucian carp, catfish, yellow catfish, red-eyed trout, bream, bream, black snakehead, and mandarin fish. There are no cold-water fish.

(4) Yellow River system: The Yellow River is the second largest river in my country, with a total length of 5,464 km and a drainage area of ​​75 million km2. There are many lakes in the source section of the river, and large reservoirs have been built on the main stream, such as the Sanmenxia, ​​Liujiaxia, and Qingtongxia reservoirs. There are 140 species of fish, with fewer species in the upper reaches, only more than 10 species, mainly plateau-specific fish such as schizothorax. The main species in the middle and lower reaches include carp, crucian carp, red-eyed trout, northeastern yarrow, catfish, thorny goby, Yellow River goby, flat-fin loach, multi-scaled shovel-jawed fish, etc. The unique fish include the northern copper fish. The Yellow River carp is regarded as a delicacy in my country and has always been praised by people.

(5) Huaihe River system: The Huaihe River originates from Tongbai Mountain, flows through Henan and Anhui provinces, flows into Hongze Lake in Jiangsu, and finally flows into the Yangtze River through Gaobao Lake from Sanhe. It is 900 km long. There are many lakes in the Huaihe River system, including Hongze Lake (1,960 km2) and Gaobao Lake. Reservoirs include Fuziling Reservoir and Meishan Reservoir. There are 81 species, which are connected with the Yangtze River and the Yellow River, and the fish composition is similar to them.

(6) Yangtze River system: The Yangtze River Basin is one of the richest regions in my country and also the most developed fishery region in my country, accounting for about two-thirds of the country's fish production. There are more than 300 species of fish, of which more than half are carp fish. Fish in the Jinsha River section include schizothorax, and more than 190 species of fish in the Sichuan River. The main fish species are those that are suitable for living in rapids, such as species of the subfamily Hylidae, Hylidae, and Hylidae. The main economic fish are carp and copper fish, accounting for more than half of the catch. The middle and lower reaches of the Yangtze River are rich in fish, with many economic fish species, including the four major carps, as well as carp, bighead carp, minnow, bighead carp, bream, bream, red-eyed trout, long-snout catfish, catfish, and mandarin fish. Migratory fishes account for a considerable proportion of the fisheries in the middle and lower reaches. The spawning grounds of shad are mainly in the Gan River. Coilfish and dark-striped pufferfish are mostly found in the lower reaches. Songhua perch is a famous product of Songjiang, a tributary of Huangpu River. Anchovy coilfish and premaxillary silverfish mainly live in the estuary. The Yangtze River system is not only rich in fish, but also rich in natural fish fry such as the four major carps, which reached 13.25 billion in 1957.

(7) Qiantang River system: Qiantang River is the largest river in Zhejiang Province, with a total length of 500 km. The various sections of the river are called Changshan Port, Lan River, Fuchun River and Qiantang River. Its estuary has the famous Qiantang River tidal bore. Xin'anjiang Reservoir (now called Qiandao Lake) is built in this river system. There are more than 100 species of fish, and Fuchun River has historically been rich in shad.

(8) Minjiang River System: The Minjiang River is a large river on the southeast coast, with a total length of 577 km. It originates from Wuyi Mountain and flows into the East China Sea in two branches east of Fuzhou. There are about 100 fish species, with many species of the subfamily Hylidae and Hylidae. Myxocyprinus and tropical climbing perch are also found. The main economic fish species are carp, spiny barb and catfish. Flower eel is a local specialty.

(9) Pearl River system: The Pearl River system consists of the Xijiang River, Beijiang River, Dongjiang River and the Pearl River Delta. The Xijiang River is the main stream, with a total length of 2,210 km. The upper reaches of the Xijiang River are divided into the Nanpan River (originating in Yunnan) and the Beipan River (originating in Guizhou); the Beijiang River originates from Xixi Bay in Xinfeng County, Jiangxi Province, with a total length of 468 km; the Dongjiang River originates from Dazhuling in Xunwu County, Jiangxi Province, with a total length of 523 km. There are 294 species of fish, the main economic fish are carp, crucian carp, silver carp, bighead carp, grass carp, dace, bream, bream, red-eyed trout, croaker, barbel, etc. There are many endemic species, such as the bearded crucian carp, the mullet, the leaf knot fish, the spotted bream, etc. The red stingray is originally a marine fish, but it can survive and reproduce in the fresh water of the Pearl River system. The Chinese sturgeon and the shad can also be seen.

(10) Lancang River and Nu River system: The Lancang River originates in southern Qinghai, flows through eastern Tibet and northwestern Yunnan, and flows out of the country at Xishuangbanna Dai Autonomous Prefecture in Yunnan, entering Laos, Thailand, Cambodia and Vietnam. After leaving the country, it is called the Mekong River. It is 4,500 km long, and the Lancang River in my country is 1,612 km long. The Nu River originates in the Tanggula Mountains in Tibet, flows through Yunnan and enters Myanmar. It is 3,200 km long, and my country accounts for 2/3 of the total length. There are relatively few fish species in the Lancang and Nu rivers, mainly schizothorax and loach.

(11) Yarlung Zangbo River System: The Yarlung Zangbo River is a large river in Tibet, my country, with a total length of 2,057 km. It originates from the glacier area at the northern foot of the Himalayas and finally flows into India. The river has a large drop in elevation and few fish species. The main fish species are schizothoracic fish and barbel fish.

(12) Taiwan and Hainan: The longest river in Taiwan is the Zhuoshui River, which is 186 km long. There are about 70 species of freshwater fish, mainly carp, crucian carp, black carp, grass carp, silver carp, bighead carp and fish of the subfamily Barbinae. All rivers in Hainan originate from Wuzhi Mountain. The largest river is the Nandu River, followed by the Changhua River and the Wanquan River. There are about 85 species of freshwater fish, of which more than half are species of the subfamily Barbinae, Sphenodontinae and Gobiinae.

(13) Tarim River system: The Tarim River is the longest inland river in my country, with a total length of 2,137 km. It originates from the Pamir Plateau and Kunlun Mountains, circulates in the Tarim Basin, and flows into Lop Nur and Taitema Lake. There are very few fish species, mainly species of the subfamily Schizothorinae and the subfamily Triplophyinae. Bosten Lake is the largest fishery base in Xinjiang.

(14) Irtysh River system: The Irtysh River is an outflow river in northern Xinjiang and belongs to the Arctic Ocean system. It originates from the southern slope of the Altai Mountains, is 546 km long in my country, and flows into Russia. There are more than 20 species of fish, including carp, northern pike, Arctic grayling, mullet, taimen, and perch. In addition, there are black crucian carp, small-bodied sturgeon, Siberian sturgeon, and burbot.

10. How much is the electricity price for aquaculture? How much is the electricity price for aquaculture?

Different regions have different prices. Aquaculture can pay for agricultural electricity, which is about half the price of electricity we usually use.