How to control the water temperature of black fish farming, and how much water temperature does blac

Black koi ink carp, how to control water temperature, small skills for disease coping.

1. Black fish has strong cold resistance, it can survive in the water buried beam temperature environment of 0-41, and the water temperature suitable for their growth and reproduction is 16-30. 2. In spring, when the water temperature rises above 8, the black fish will generally move in the middle and upper water bodies; In summer, blackfish generally move in the upper water columns; In autumn, when the temperature is lower than 6, the blackfish swim slowly and generally lurk in the depths of the water layer. In winter, when the water temperature is close to 0, blackfish are generally buried in the silt for the winter. 3. Black fish is a carnivorous fish, its food will change with the size of the fish, juvenile fish mainly feed on rotifers, scratch pods, cladopods and midges larvae and other organisms, adult fish mainly feed on various small sources of fish and shrimp.

Summary. Blackfish can be kept in their own pots for about three days for two reasons:

1. The black fish is a freshwater fish, which is not suitable for activities in a pot, which will limit its viability; Clause.

Second, black fish will breed bacteria in the pot, and it will cause harm to black fish after a long time.

It takes a few days for blackfish to raise water.

Blackfish can be kept in their own pots for about three days for two reasons:

1. The black fish is a freshwater fish, which is not suitable for activities in a pot, which will limit its viability; Clause.

Second, black fish will breed bacteria in the pot, and it will cause harm to black fish after a long time.

If raised in the pond, the quality of water quality has a great impact on the growth and development of black fish, in the process of breeding, to grasp the changes in water quality at any time, timely water quality adjustment, the general practice is, after April the water temperature will gradually rise, the amount of bait will also increase, then the excrement of fish in the water will also increase, at this time to often add new water, generally about 10 days into 20-30cm new water. Planting water hyacinth and other aquatic plants at the edge of the pond or putting 150 tail and crab fingerlings with a specification of about 250g in the pond can effectively purify and regulate the water quality in the pond.

My first impression of Blackfish was that it was very ferocious. It is particularly fertile, and has a great appetite, breeding black fish, need to prevent birds and bats, black fish are fierce, but after all, they can only be king in the water, and there is a risk of being eaten when encountering animals outside. In particular, small black fish are easily caught and eaten by Jishan birds and bats.

Especially at night, small black fish have the habit of swarming to the surface of the water to breathe. At this time, the long-awaited bat will quickly fly close to the surface of the water and seize the opportunity to pick up the blackfish. Farmers who do not have experience in breeding blackfish do not understand this situation and do not take any preventive measures, and they do not know what the reason for the decrease in blackfish fry.

Therefore, for the black fish fry that have just been released, we must pay attention to the prevention, that is, the use of mesh cover above the breeding pond, not only to prevent bats from sneaking up at night, but also to prevent bird attacks during the day, to create a safe living environment for black fish fry.

To raise black fish, you need to prepare a fish pond of appropriate size, ensure that the water depth is about two meters, and the water temperature should be controlled at more than 15. In terms of feeding, breeders can feed fish feed, red bloodworms, small shrimp and small fish. In daily feeders, they need to change the water once a week and regularly sprinkle insect repellent on the fish tank.

To raise blackfish, the keeper needs to build a pool of suitable size according to the number of blackfish, and the water depth needs to be about two meters. Then control the water temperature above 15.

In terms of feeding, the keeper can feed fish feed, red bloodworms, mosquito larvae, small shrimp and fish larvae. Breeders should also regularly sprinkle insect repellent on the fish pond to deworm the black fish.

In daily feeding, blackfish excrement is more, and the keeper needs to change the water once a week to clean the pool. Ensure that the fish pond is clean and hygienic, and there will be no bacterial breeding that will affect the health of the black fish.

<>1. Pond and water source: the pond is deep, the water is deep, the silt at the bottom is 10cm deep, the area is generally not more than 2 acres, and the lake water is used for breeding. 2. Breeding management

7 days before stocking fish fry to clean the pond for disinfection, and in September to early October stocking the same size and no injury and disease of small black fish, bait to live animals, such as seawater small trash fish, generally fed twice a day. 3. Daily management: patrol the pond every day and observe the situation of the black fish.

1. Ponds and water sources

1. Choose a pond.

1) The area of the pond is generally not more than 2 acres, the depth of the pond is, the water is deep, the bottom of the pond is muddy, and the silt is 10cm deep.

2) It is convenient for water inlet and drainage, and it also needs to have good ventilation and lighting.

2. Water source. Blackfish can generally be cultivated with lake water, reservoir water, well water and other water sources, and the water quality is suitable for neutral or weak alkaline.

3. Other equipment.

At the water inlet and drainage outlet, an anti-escape net is set up, and aquatic plants such as water floating lotus and water hyacinth can be planted in the shallow water at the edge of the pond, which can not only block the sun, but also purify the water quality and adjust the water temperature.

Second, breeding management

1. Stocking fingerlings.

1) Choose small black fish with a body length of more than 10cm, consistent specifications, and no injuries or diseases.

2) Pond cleaning and disinfection is carried out 7 days before stocking of fry, which can usually be stocked from September to early October.

3) Before stocking, soak the small black fish with 5% salt water for disinfection, usually 1500-2500 fingerlings per mu (body length 10-15cm), and raise 200-250 large-sized silver carp fingerlings, and use the fry hatched by it for black fish to eat.

2. Feed feed.

1) Generally, feed 2 times a day, to achieve time, fixed, qualitative, quantitative, bait to live things, such as seawater small trash fish, shrimp.

2) In the peak feeding season, the amount of bait is about 8% of the fish body weight, and in the low season, it is about 3-4% of the fish body weight.

3) When the live bait is insufficient, you can feed artificial bait, the formula is generally wild fish meat sauce, soybean flour, peanut flour, yeast powder plus a small amount of binders, vitamins and appropriate amount of trace elements, note: the protein content in the bait needs to be more than 40%.

3. Daily management

1. Every morning and evening, you need to patrol the pond to observe the feeding and activities of the black fish, and pay attention to the changes in water quality, and need to deal with the abnormal situation in time.

2. In spring, the water can be changed once every 7 days, and in the high temperature season, the water can be changed once every 3 days.

3. Do a good job in the prevention of fish diseases, generally sprinkle the whole pool with quicklime or bleaching powder once every 15 days, and the amount of quicklime per mu is 5-10 kilograms, and then sprinkle it after dissolving it in water. The amount of bleaching powder per mu is 250g times, and it is dissolved in 10-15 kg of water and then sprinkled in the whole pool.

Blackfish is the common name of snakehead, and is also known as mullet, raw fish, etc. in academics, blackfish is a carnivorous fish with a fierce nature, which is very common in China. Its individual is relatively large, grows faster, has higher economic benefits, has fewer bone spurs in the body, has a high meat content, and is very rich in nutrients. Its protein content is higher than that of other meats, and it can be used for ** wounds, and is listed as the best grade of insect fish.

Therefore, today I will bring you the breeding method of black fish.

Pond selection. When breeding black fish, it is necessary to determine the breeding area of the pond first, and the black fish should not be cultivated too much, but it can be divided into several ponds and raised separately, and a pond is about 2-5 acres. The water depth is about 2 meters, the silt at the bottom of the pond should not be too much, and the inlet and outlet of the pond must be set up with an anti-escape net to prevent the black fish from escaping during the breeding process. Before stocking, quicklime needs to be sprinkled to disinfect the fish pond thoroughly, and water floating lotus about one meter wide can also be planted in the pond, which can not only prevent blackfish from jumping out of the pond, but also effectively shade the pond.

The pond should be located away from noisy and noisy places, with sufficient clean and hygienic water sources and a good drainage and water exchange system.

Fingerlings stocking. When choosing fish species, they are generally bought in the market, although the ** on the market is relatively low, but their specifications are different, and many times the fish will be mechanically damaged. Therefore, before stocking the fry, the pond must be disinfected with quicklime, or the fry must be soaked in salt water and bleaching powder for about 20 minutes to disinfect the fry. The stocking density of black fish is determined according to various factors such as breeding area, feeding technology and feed.

Generally, up to 2,500 blackfish can be raised per acre.

Feed feeding. As long as anyone who has experience in blackfish farming knows, blackfish is a very ferocious carnivorous fish, whether it is live meat or dead meat, mainly feeding on all kinds of small fish and shrimp in the pond. When hand-feeding blackfish, they must be fed at regular intervals every day, at least twice a day at 10 a.m. and 3 p.m. Generally, after a week of stocking, the fish will begin to rush to the surface of the water to eat, when the black fish eat, you should also carefully observe the eating situation of the black fish, if there are fewer black fish near the food or the black fish are not fierce, it means that most of the black fish have been full, you can stop feeding.

Feeding management. The blackfish has a very large diet, so it also has a lot of excrement, so it will soon make the water in the pond fatter and fatter, causing a large number of zooplankton to breed. Cause the pond to begin hypoxia, so in the breeding should pay attention to observe the change of dissolved oxygen in the water, if the phenomenon of hypoxia occurs, must be increased in time, if the situation is more serious, then it is necessary to take the method of water surface sterilization, splash trichlorfon at the pond edge of about 3 meters. Although the disease resistance of the black fish is very strong, and the incidence rate is low in the breeding process, but in the autumn, if it is not properly managed, it will still cause the black fish to get sick, so we must always pay attention to the growth of the black fish at this time, find abnormal conditions, and make corresponding measures in time.

The cubs of the year are very good to raise, nematodes must not eat, they hatch to grow to about three centimeters when they are under the protection of their parents hundreds of small fish and shrimp encountered by predation, casually throw out the hook and come up, can catch it, twenty centimeters of fish at least one year old, have a temper, need to be put into the aquatic grass or green water will eat, there is no black fish in the clear water in the river, the black fish can eat feed and raw meat after domestication, but to move to do it, dead fish in the water is not eaten, Raise this must be covered or net small fish can jump 30 centimeters, grow up to jump a meter, I have a raised for more than five years, died of illness last year, and now it is very big to raise last year

In winter, it will begin to hibernate, you can prepare a mud and sand to lay the bottom, and its tail will begin to plunge into the water with only the big head exposed, then put in four or five small green shrimp, and when you are hungry, you will come out and eat two bites and then go back.

The fish tank basically does not need to change the water, not too clean, only scoop water to water the flowers and replenish new water, in short, the water will be eaten when it is green, and the water is not comfortable.

1. Pond selection: Breeding black fish should choose a river pond of appropriate size to ensure that the water depth is about meters. 2. Feed feed.

It is provided with food such as red bloodworms, small shrimp and fish larvae. 3. Clean the pool: The excrement of black fish is very polluting, and the water needs to be changed every 1 week to disinfect the bottom of the pool.

4. Patrol pond aeration: put an aerator in the water.

1. Pond selection

To raise blackfish, prepare a pond of the right size, ensure that the depth of the water is about meters, and clean up the weeds and plankton in the water to provide a clean and clean environment for the blackfish to grow.

2. Feed feed.

Black fish is a carnivorous fish, mainly small trash fish such as crucian carp, in the early stage of breeding, you can put the chopped fry into the pond, or feed artificial feed, mix with soybean meal, yeast powder and fish and shrimp, and feed the black fish 2-3 times a day.

3. Clean the pool

The feces of the black fish are very easy to pollute the water source, once the water quality is found to be turbid in the breeding process, it is necessary to inject new water into the pond, discharge the old water from the black, keep the pond water clean, and every year from July to September is the high temperature season, to change the water for the black fish once a week.

4. Patrol the pond to increase oxygenation

The black fish has a large diet and a lot of excrement, which is easy to fatten the pond water, resulting in the reproduction of plankton and the lack of oxygen in the water, so it is necessary to patrol the pond every morning and evening, carefully observe the feeding and activities of the black fish, and you can put an aerator in the pond to provide oxygen for the black fish.