Fish farming technology, how to fish farming methods

First, the choice of farms.

The choice of semi-smooth tongue sole breeding farm is very important, it is better to choose a rich water source, no pollution, good water quality, suitable water temperature, and the use of suitable hydrological conditions of underground well water. Indoor greenhouse, industrial farming insurance coefficient is higher, can also use shrimp ponds, ponds for outdoor farming, so that the semi-smooth tongue sole directly ingests natural bait, its growth rate is also relatively fast, the experiment shows that in the shrimp pond stocking semi-smooth tongue sole seedlings can grow to 450 grams on average for 5 months, it can be seen that its growth rate is fast, outdoor aquaculture, the water level requires meters, if the stocking density is larger, it can be artificially baited. The shrimp pond is designed around the bottom of the pond to dig a circular ditch of rice, which is more conducive to the wintering and summer of tongue sole.

Second, the conditions for building a pool.

There is no special requirement for the shape and structure of the pond for the industrial cultivation of semi-smooth tongue sole, and the existing pools for breeding bud flounder and turbot can be fully suitable for the cultivation of semi-smooth tongue sole.

Third, the bait semi-smooth tongue sole swims slowly, accustomed to day and night, evenly distributed in the pool, most of the fish stick to the bottom of the pond, like to gather in the water inlet, which puts forward higher requirements for the feeding of the semi-smooth tongue sole with the bait, which requires the bait to be not easy to lose in the water, and must be sinking. The bait formula is: > 100g (10% of sand silkworms, 10% of oysters, 20% of sand diamond fish, 10% of mackerel, 50% of powder, cod liver oil 5, Hatwei 3, yeast powder, farmers can use small bait processing machines according to this formula to process bait, low cost, can enable farmers to get more profits, of course, when processing bait, the size of the bait changes less than turbot, and it must be palatable to feed.

4. Water quality management.

Pay attention to the determination of water temperature, maintain the water quality of feeding water by adjusting the amount of water exchange, the daily water exchange is determined according to the stocking density of the fish, the water quality of the cultivation pond, the general high temperature period of 6-8 cycle days, usually 4 cycle days, according to the bait situation to increase the amount of water exchange is conducive to maintaining water quality.

5. Stocking density.

The stocking density of semi-smooth tongue sole in the pond is determined according to the water quality conditions, (dissolved oxygen, etc.) is generally 5-20kg m2 for factory culture, and kg m2 for shrimp ponds.

6. Growth rate.

The growth rate of semi-smooth tongue sole is relatively fast, the annual growth rate can reach about 500 grams, and the growth rate of two-day-old fish is 200-400%, which is very close to flounder.

7. Disease prevention and control.

At present, the disease does not pose a threat to the development of semi-smooth tongue sole. In daily management, closely observe the feeding situation, swimming, body color, and whether there are abnormal behaviors of the fish, so as to detect the precursors of disease in time and prevent it. Adjust the amount of water exchange in a timely manner, regularly thin the seedlings to reduce the stocking density, regularly carry out medicated baths and feed medicated bait, if possible, it is recommended to pour the pool once a month, common diseases are:

Ascites disease, abdominal swelling disease, rotten fins and tails, the use of conventional drugs can be used**.

8. Lighting requirements.

The semi-slippery tongue sole prefers low-light conditions and can still feed with its sense of smell at night without turning on the lights.

First, the choice of farms.

Second, the conditions for building a pool.

3. Bait 4. Water quality management.

5. Stocking density.

6. Growth rate.

7. Disease prevention and control.

8. Lighting requirements.

What kind of fish do you want to farm, different fish farming is also different.

1. Pond aquaculture.

Pond culture is the most basic form of fish farming. The ponds required are renovated from the Temple of Heaven and artificially excavated, and the general area is relatively small, a few acres to dozens of acres.

The condition of the pond is preferably natural irrigation, with a certain slope. To have an adequate water source, the water quality must be excellent, and the pH value should be in between, ensuring that there are no chemicals that are harmful to the fish. The transparency of the pool water should be around 30 cm; The amount of dissolved oxygen at 9 a.m. is around 2 milliliters.

Frequent flushing when breeding. Water should be drained frequently. The drainage system should be matched, equipped with an aerator to clean the pond and disinfect it.

2. Courtyard farming.

Courtyard culture is an ecological farming model, which can make full use of the water body of the courtyard for fish farming. This kind of farming can not only increase income, but also beautify the garden, so it is very popular among people.

There are many breeding methods of courtyard culture, including standard pond farming, ornamental farming, small-scale farming and so on.

3. Rice farming.

Rice farming is a comprehensive way to breed fish by using the water quality and environment of rice fields, which can achieve a double harvest of rice planting and fish farming. It is one of the more popular breeding methods in recent years.

Choosing the right location is crucial for rice farming, as it requires a flat terrain, a soil with excellent water retention, abundant water resources, and a guarantee that there is no chemical contamination. It is better to use saline-alkali land for paddy farming.

Fourth, cage culture.

Cage culture is an intensive farming method, also known as dense cage culture. It is a way to apply pond resting technology to a large water surface with superior conditions and environment to achieve high yield. It is now one of the main aquaculture methods of large-scale fish farming.

It is best to have abundant aquatic life in the waters where the cage culture is located, the water quality should be good, and the average water temperature during the growing period should be above 20 degrees Celsius. There are several kinds of cages used in aquaculture: fixed cages, floating cages, and sunken cages, and each cage has suitable conditions for use.

1. Before raising fish, you should prepare a fish tank that is not too small, which is mainly determined by the size and number of fish you raise. Pay attention to the stocking density of the fish. A minimum of 3 litres of water should be used to keep 1 cm of fish, if your tank holds 100 litres of water, you can feed 3 fish of 10 cm and 8 fish of 5 or 6 cm (which are relatively small).

In winter, the temperature is low and the feeding is less, so it can be appropriately denser. In larger spaces, fish are more active and have brighter body colors. Too much density can easily lead to hypoxia in the water, deterioration of water quality, and cause fish to get sick and die.

2. The new water to be prepared for the fish should be stored for one or two days, which is called drying water, the purpose of which is to remove part of the chlorine in the water on the one hand, and the other function is to make the temperature of the new water and the old water close.

3. Do not change the temperature of the water drastically. Fish can survive in a wide range of temperatures, and can still sustain life below the ice in winter, and can live normally as long as they are not exposed to the scorching sun on hot days, but if the temperature changes sharply, it will lead to illness or death, and the deviation should not be too large, generally within 4 degrees is allowed.

4. Do not change the water too much at one time, otherwise the water quality changes suddenly, which will lead to the occurrence of water quality discomfort of the fish. Fish have adapted to live in the original water quality, and if the water quality changes suddenly, the fish will not be able to adapt and get sick, or even die suddenly.

Goldfish are large, with tumors on their heads, bulging eyeballs, transparent scales, bead scales, etc., and a variety of body colors, including red, white, blue, gray and other colors, with a variety of varieties and long and short body sizes.

2. What are the varieties of goldfish?

Crucian carp, grass goldfish, red longan, red and white flowered goldfish, five-flower longan, purple dragon's eye, magpie dragon's eye, panda goldfish, four-ball dragon's eye, jade seal head, red pearl, purple pearl, five-flower pearl, tiger head, danfeng, etc.

2. How to raise baby goldfish so that they don't die?

1. Fish fry selection: what fish should be selected?

There are various varieties of small goldfish, so when selecting seedlings, try to select fish with full size, symmetrical body and bright color according to the characteristics of the species, so as to improve the survival rate. Generally choose 1, 6, 8, 9 breeding is the best, if you want to mix with other ornamental fish, you can match six other colors or six fish of the same color to breed, not only for the tank to add color, but also will not affect luck.

2. Fish tank selection: how big is the fish tank?

Raising goldfish is more particular, many are placed in the aisle or office, so it is best to use the appropriate volume of the aquarium to breed, generally with a depth of about 20 25cm in the fish tank to breed seedlings, to grow to a big fish, and then change to a water depth of about 25 30cm in the fish tank culture. In addition, siphons, aeration pumps, and lighting equipment should be prepared to provide a good environment for the fish to grow. If there are a large number of goldfish, you can buy a larger fish tank.

Normally, a fish tank that can hold 100 liters of water can generally raise 3 10cm fish and 8 5 6cm fish, so when farming, try to choose the right fish tank according to the size and number of goldfish.

3. Water quality requirements: what kind of water is good to raise?

Goldfish do not have high requirements for water quality, and generally survive in tap water for 2 to 3 days, but they should do a good job of oxygenation to avoid goldfish dying of hypoxia. At the same time, it is necessary to change the water frequently to ensure that the water quality is clear.

Fish breeding technology: water raising, selection, feeding, control, precautions.

1. Water nourishment. Fish farming starts with water, and only good water quality is suitable for the growth of fish. Novice fish farmers, do not rush to buy fish after purchasing a fish tank, you need to leave the tap water for 7 to 10 days, during which time you will inject some fish maintenance drugs into the fish tank, and then buy fingerlings for stocking.

2. Optional. When buying fish, you should pay attention to the selection of fish species, due to the different delicate degrees of fish species, different personalities, different fish species together, if the choice is improper, often tear each other, resulting in the best of the fish. Therefore, it is necessary to raise fish with similar temperaments together.

3. Feeding. When feeding the fish, be sure to pay attention to reducing feeding, once a day, generally according to the number of fish in 2-3 minutes to eat clean. It is also necessary to pay attention to the density of fish farming to give the fish enough space to live.

If you find that the fish tank is a little cloudy, or when there is a lot of fish feces, put in digestive bacteria, and after 10 minutes, open the filter for an hour, the fish tank will become clean and the water quality will become better.

4. Prevention and control. The saddest thing about fish farming is that the fish are dead, but as long as you regularly sprinkle some special potions sold in the market into the fish tank, these potions can play a role in preventing and curing the fish. In winter, fish farming should also pay attention to the water temperature, if it is a tropical fish, the water temperature is generally kept between 23°C 26, and the water in the fish tank is heated.

5. Precautions.

When raising fish, you can try to use a slightly larger fish tank, and you should clean up the excrement in the fish tank for about a week, otherwise it will affect the living space of the fish. Generally, the temperature of the water is between 24 degrees and 26 degrees, and most fish are acceptable, if there is no such condition at home, do not raise some precious fish, or move the fish tank into a warm place, you can slightly extend the life time of the fish.

1.Water quality control is very dependent on water quality, and it is easy to protect fish health and achieve efficient fish growth by maintaining stable water quality and meeting the water quality requirements of fish growth. Therefore, the control of water temperature, pH, dissolved oxygen and biological nitrogen is equally important in the cultivation process.

2.The requirements for the use of fish feed are high, and the feed of fish should be carefully designed to meet the needs of different types of fish at different growth stages, and ensure that the feed can be fully digested to increase the nutritional value of fish. 3.

Adaptability improvementIf fish want to achieve high-quality aquaculture, the breeding environment should be improved as much as possible, the adaptability of fish should be improved, and various adaptive improvement technologies should be actively developed, such as breeding technology, genetic improvement technology, drug insecticidal technology, nutrition technology, etc., so as to improve the quality and yield of fish. 4.Disease prevention In the process of fish farming, we should do a good job in fighting diseases, grasp disease prevention measures in a timely manner, take measures such as inactivation and insecticides in a timely manner, regularly carry out disease monitoring of fish, and strictly operate industry technical specifications to prevent the occurrence and spread of diseases.

Fish farming techniques:

1. Water artificial breeding of tropical fish requires that the water quality is soft water or low hardness water, and the pH is weakly acidic or neutral. Tropical fish are more acidic, have difficulty breathing, and grow slowly; The alkaline nature is strong, and the gill tissue of tropical fish will be corroded.

Use a straw to suck out feces, bait residues and other dirt from the bottom of the fish tank. The water absorption should be 1 4 of the water in the tank. Then, add the same amount and temperature of new water that has been dried or chemically dechlorinated. The frequency of water mixing should be 2 times a week in autumn and winter, and 3 times a week in spring and summer.

Second, the water temperature. Tropical fish are extremely sensitive to temperature and will die quickly if the temperature is not suitable. Different species of tropical fish have different water temperature requirements. The water temperature for most tropical fish is 20 24 and 25 28 during the breeding season, and the temperature difference between day and night should not exceed 4.

3. Oxygen. A certain amount of aquatic plants should be planted in the fish tank, because aquatic plants produce oxygen when they photosynthesize, so that the oxygen content in the water increases. At the same time, timely removal of dirt and frequent water changes can also increase the dissolved oxygen in the water.

Fourth, light. Place a fish tank in a sunny room, and it is best to receive about 1 hour of sunlight in the morning and evening when the sunlight is insufficient; If you set up a fish tank in a room without sunlight, you should use a light to illuminate the aquatic plants, using a 60-watt incandescent bulb or a 40-watt fluorescent lamp for 6 hours a day. Light can make tropical fish grow faster and make their bodies more colorful.

5. Stocking. The stocking density depends on the size of the tank. For first-time fish farmers, the lower the density, the better, and the addition of an inflator pump is required. For the combination of fish in the same tank, quiet fish cannot be polycultured with aggressive fish; Large fish cannot be polycultured with small fish.

There are a variety of options for tropical fish feed, such as fish bugs, bloodworms, or packaged feeds suitable for different species of tropical fish. Both raw and live bait should be washed to control the source of the disease.