What is the cause of dead fish in the fish pond and how to rescue it?

The first reason is that the flood pond causes the phenomenon of sudden degeneration of dead fish. Rural fish farming, showing that the dead fish in the pan pond are all dead fish with hypoxic floating heads in the fish pond. In the process of feeding, it is easy to present the situation of flooding ponds, sudden changes in water quality and early morning hypoxia floating head dead fish.

In the fish pond with high yield and relatively fertile water quality, in the high temperature season, phytoplankton overmultiplies, especially the large reproduction of cyanobacteria, constitute lake indigo, also known as patina water, which constitutes a lack of nutrients in the fish pond, resulting in the death of cyanobacteria and sinking to the bottom of the water, and the pond water becomes clear and thin, and can smell the fishy odor. The death of cyanobacteria constituted a severe lack of oxygen in the pond water, and extremely toxic substances such as ammonia nitrogen, nitrite, hydrogen sulfide and other toxic substances occurred together, resulting in the death of the whole pond of giant and fine fish. Secondly, the water quality is more fertile, the density is larger, and thunderstorms in the afternoon or at dusk lead to severe hypoxia and dead fish the next morning.

In addition, high-yield feeding, large amount of feeding at dusk, fish eat very much, digest food at night, and consume a large amount of water-dissolved oxygen, resulting in the death of a hypoxic floating head the next morning. In addition, the high temperature in summer and autumn, the pond water is too fertile, the density is too large, the light is poor during the day, the oxygen consumption drops rapidly, the water dissolved oxygen is too little, and the oxygen content is exhausted, resulting in the lack of oxygen the next morning and the floating head dies.

The second reason is the phenomenon of dead fish constituted by improper medication. Due to the fact that farmers often do not understand the nature and function of fish medicine, improper use methods and other reasons, the fish raised in the pond pass away, which constitutes a loss that should not occur. After clearing the pond, residual drugs such as sodium pentachlorophenol are poisoned, and the fry are put in, and they will soon be poisoned.

Splashing bleach or other fungicides throughout the pond can also constitute the death of the fish.

The third cause is fish disease, poisoning and improper handling of dead fish. Fish die in large numbers in a short period of time due to sudden hemorrhagic diseases. Pond silt is too thick or fertilized properly, resulting in an overrun of ammonia nitrogen in the water, resulting in the death of fish species poisoning.

There are also in the spring of April and May, the saline-alkali layer rises, resulting in the increase of alkalinity in the fish pond, in the case of high temperature weather, the pond water is shallow, and the water quality is thin, and it is easy to cause death due to alkalosis. In addition, due to the careless use of organophosphorus pesticides, the pond water is polluted, resulting in fish poisoning.

1. Pantang: Dead fish in Pantang are generally more common in pelagic fish, such as silver carp and bighead carp; Fewer floating heads of demersal fish, such as carp and crucian carp, die.

Poisoning: Poisoning and dying fish can occur regardless of the type of fish, even benthic carp, crucian carp or loach, which are extremely resistant to hypoxia.

2. Rescue measures to be taken in the event of flooding or poisoning.

If fish deaths caused by flooding ponds or poisoning are detected in time, there is a possibility of rescue and a chance to reduce losses.

The rescue measure for the pan pond is to inject a large amount of new water in time and start the aerator to increase oxygen. However, for the aquaculture pond with poor facility conditions, in the case of inconvenient water source and lack of aerator, high-efficiency aerator can be applied in time to save the emergency.

The rescue measure for the poisoned pond is to immediately inject a large amount of new water, release the old water in the pond, and inject it while draining until the fish pond is calm; However, for ponds with insufficient water sources, fish should be immediately fished, and the fish should be quickly transferred to non-toxic ponds or cages, and then transferred back to the original pond after the toxic water of the original pond is properly treated.

Fish mortality in fish ponds may be related to fish poisoning, which is usually related to the toxins produced by the bloom of harmful algae in the fish ponds, or may be mismanaged, such as nitrite poisoning, ammonia nitrogen poisoning, etc. It may also be caused by the deterioration of water quality and the lack of fish with high stocking density, so it is necessary to adjust the water quality as soon as possible and treat it as soon as possible. In addition, it may also be infected with a disease, which needs to be diagnosed quickly and prescribed the right medicine.

The fish pond died, there must be many reasons, if you die, you look at the specific reason for one, the reason to find may be the water quality tooth, etc., some reasons are caused.

1. What should I do if the fish in the fish pond keep dying?

If the fish in the fish pond are always dead, you need to change the substrate and pay attention to cleaning up the debris. The reason why some fish will die is mainly because the environment is not good, and there are too many debris at the bottom of the water, which leads to the accumulation of a large number of harmful substances, and the breeding of bacteria and microorganisms, which affects the health of the fish and even leads to their death. The method of changing the bottom is very simple, you can use enzymes or change the negative.

In addition, the water quality should be adjusted to increase the immunity of the fish.

2. Why do the fish die?

1. There is no clear pond: after the new fish pond is built, it is also necessary to clean the pond, although there is no silt at the bottom of the pond, but it is inevitable that there will be some bacteria. Without pond cleaning, harmful bacteria in the water could invade the fry and cause them to die in large numbers.

Usually, after the fish pond is built, it needs to be exposed to the sun for a period of time, so that a large number of bacteria can be destroyed. Then put a little water into the fish pond and sprinkle bleaching powder or quicklime all over the pond, both of which are powerful tools for sterilization and disinfection.

2. Poor water quality: Poor water quality does not necessarily mean that the water body is turbid, as the saying goes, there are no fish when the water is clear, and too clear water is not enough to raise fish. Usually after the water is released, it needs to be properly fertilized, and although these fertilizers cannot be used as feed for the fry, they can promote the proliferation of plankton so that the fish have something to eat.

Of course, it is also necessary to pay attention to testing the water temperature and hardness to see if the water is suitable for the growth and survival of the fish.

3. Fish fry problem: In addition to the problem of fish pond and water, the quality of fish fry is not good, and a large number of people will die. This is mainly due to the fact that their constitution is too weak to adapt to the pond environment, which leads to a stress response and then death.

Generally to clarify the ** of the fry, it is best to buy a little less to test its quality, and then buy and put it on a large scale, if a small batch can not be raised, consider changing to something else.

Hello. There are many reasons for this: the main ones are 1The water temperature in the fish pond is too high.

2.There is a lack of oxygen in the fish pond.

1. Splash peptide liquid on the whole pool.

In the summer, when a fish dies in a fish pond, spraying the whole pond with liquid peptides can help improve the fish's ability to cope with stress. Or when feeding, add some independent detergent and use it continuously for 3-5 days.

2.Disinfect the fish pond.

In addition to administering medicine to fish, it is also necessary to disinfect the fish pond with quicklime, bleaching powder, potassium permanganate solution, Qingtangling and other drugs.

3.Aerce the fish.

When there is a large area of dead fish in the water area (a large number of fish are not dead), the fish should be oxygenated as soon as possible.

Whatever the cause of the mass death of the fish, aerating the fish is the most effective way to save the surviving fish. When adding oxygen, according to the water quality characteristics such as fish pond area and water source, configure a suitable aerator for oxygenation.

4.Catch dead fish.

In addition to doing the necessary competitive work, it is also necessary to organize manpower to salvage dead fish to prevent dead fish from rotting and polluting water quality and avoiding greater losses.

If the dead fish fished out of the fish pond is confirmed to be poisoned and died, it should be dug into a deep pit and landfilled, and it is strictly forbidden to discard it at will.

Secondly, it is necessary to pay attention to the following requirements:

1.Change the water once a week and don't change it too often.

2.It is recommended to keep some aquatic plants in the fish tank.

3.Adjust the water temperature to between 20 and 28 degrees.

4.Sprinkle some salt with each water change to prevent disease.

5.Keep the fish semi-starved so that the fish will be more active.

6.If you use tap water when changing the water, expose the water to the sun for three days.

7.Get plenty of sun.

8.The water temperature should be constant.

9.The longan variety with big eyes should be careful not to put the eyes when changing the water.

1.Why is it that fish mortality increases dramatically in summer and winter? Because in summer and winter, the environment of the water area becomes extremely hot or cold due to the influence of the weather, at this time, the living environment of the fish has been greatly provoked, thinking that the water temperature in the water will increase to more than 30 degrees, which is not suitable for the survival of fish at room temperature, and may also be reduced to below 0 degrees in winter, which greatly affects the survival of the fish, so it is very important to regulate the water temperature.

2.The second is that it may occur in autumn, when the fallen leaves and debris on the trees may fall in the pond, and after a long accumulation, parasites will be produced in the water to destroy the water quality and the survival of the fish, and it is also important to clean up the debris in the fish pond regularly.

3.Then the ornamental fish in the pond may carry some weak viruses, because the physique of ornamental fish is generally very weak, and some tiny viruses may kill the fish in the pond, so we can try to use quicklime and photosynthetic bacteria to improve the water quality in our pond, which can effectively reduce the germs and enhance the resistance of the fish.

4.Finally, if the water source in our pond is constantly replaced, the fish in the pond will become stressed, which will lead to the death of the fish. Therefore, the water change needs to be regular and adjustable, when is the best time to change the water?

When we feel that the water source of the fish in the water needs to be replaced, the water in the pond can be replaced, but the subjectivity of people often produces some deviations, and this time requires the participation of modern technology. In the process of fish survival, the fish pond filtration system can change the water regularly and quantitatively according to the survival needs of the fish.

The phenomenon of a large number of dead fish in a fish pond is called a flood pond. The main reasons are as follows: 1. The temperature is abnormal, the spatial layer of various fish lives is disrupted, and the fish are basically concentrated in the middle and lower layers of the water body.

As a result, the middle and lower layers of the pond are densely populated, and flooding occurs after the second half of the night.

The fish in the pond died, what was going on.

The density is too large, and only 2,000 fry are needed for one acre of water surface. If you are an earthen pond, a maximum of 3,000 per acre.

Fish mortality in fish ponds may be fish poisoning, which is usually related to the toxins produced by the bloom of harmful algae in fish ponds.

1. With the increase of temperature, the solubility of oxygen in water decreases; 2. When the temperature increases, the air pressure decreases, and its solubility also decreases; 3. When the temperature rises, aerobic microorganisms multiply in large numbers and consume a lot of oxygen; 4. With the increase of the fish's own activities, the oxygen consumption increases, and the oxygen required also increases;

May be a combination of gill mildew and bacterial sepsis. Fish gill mildew is a disease caused by gill mold spores coming into contact with the gills of fish. It is prevalent mainly in hot days (summer and autumn) and is prone to outbreaks when water quality deteriorates.

Hello dear, I'm glad to answer for you, I'm your exclusive ** answer teacher, thank you for your patience! The way to deal with dead fish in the fish pond is as follows: the dead fish can be concentrated and buried deeply.

Burial should be done away from water sources, rivers, breeding areas and residential areas. The treatment methods are as follows: 1. Regularly do a good job of pond cleaning, dredging, and drying ponds every day, and disinfect the fish pond with quicklime to reduce the occurrence of dead fish.

2. Reasonably open the aerator to increase the dissolved oxygen in the pool, and turn on the aerator can play a role in volatilizing ammonia nitrogen in the water and reduce the occurrence of dead fish. 3. Water cultivation and fertilization, according to the water quality status, in accordance with the principle of less application and diligent application, mainly carbon source fertilizer, to promote the reproduction of algae and beneficial microorganisms in the water body. 4. Regularly sprinkle microbial preparations, cultivate high-quality flora, and decompose ammonia nitrogen through beneficial bacteria.

Hopefully, this service will help you <>

Summary. There can be a variety of reasons for fish pond fish deaths. It could be an environmental problem, such as poor water quality, too high or too low water temperature, insufficient oxygen, etc.

It can also be a disease problem, such as fish infectious diseases, parasitic infections, etc. In addition, excessive density of fish ponds can also lead to fish killings. In addition, fish kills can also occur if the pond is not properly managed, such as overfeeding or over-use.

It is advisable to check the environment and fish pond management and take timely measures when problems are found.

What is the cause of fish death in fish ponds.

One will die in two or three days.

There can be a variety of reasons for fish pond fish deaths. It could be an environmental problem, such as poor water quality, too high or too low water temperature, insufficient oxygen, etc. It can also be a disease problem, such as fish infectious diseases, parasitic infections, etc.

In addition, excessive density of fish ponds can also lead to fish killings. In addition, fish kills can also occur if the pond is not properly managed, such as overfeeding or over-use. It is advisable to check the environment and fish pond management and take timely measures when problems are found.

Please check according to my summary of the cause of death above. And you can also judge based on your experience in fish farming!

Summary. Some fish ponds have not been cleared for many years, wild trash fish, shrimp and so on overbreeding, and the aquaculture fish compete for oxygen, at the same time the silt is deeper, part of the pond mouth silt more than 1 meter, the water quality deteriorates, black and smelly, after the plankton multiplication is excessive, the first is the death of plankton, become "a pool of stagnant water". Due to the mass death of phytoplankton, phytoplankton photosynthesis decreases, which is an important source of dissolved oxygen in water bodies**, and is almost completely lost.

The dissolved oxygen in the water** is reduced, which is easy to cause flooding.

The fish in the fish pond died, what was going on.

There are three main reasons why fish die in fish ponds:1fish poisoning; 2.

Fantang; 3.Caused by fish disease. There are many causes of fish poisoning, and ammonia nitrogen poisoning does not distinguish the size and type of fish, and generally occurs on consecutive sunny days and in the afternoon.

If the fish pond is located close to farmland or factories, fertilization of farmland, pesticide application of fish ponds or sewage discharge from factories can cause fish poisoning.

Fantang; What is the reason why a large number of fish will die and float up tomorrow?

The temperature is abnormal, the spatial layer of various fish life is disrupted, the fish are basically concentrated in the middle and lower layers of the water body, and the fat water fish such as the silver carp, which is mainly living in the upper layer of the water body, also turn to the middle and lower layers, and this group generally accounts for more than half of the fish capacity of the aquaculture pond. As a result, the middle and lower layers of the pond are densely populated, and flooding occurs after the second half of the night.

Some fish ponds have not been cleared for many years, wild trash fish, shrimp and so on overbreeding, and the aquaculture fish compete for oxygen, at the same time the silt is deeper, part of the pond mouth silt more than 1 meter, the water quality deteriorates, black and smelly, after the plankton multiplication is excessive, the first is the death of plankton, become "a pool of stagnant water". Due to the mass death of phytoplankton, phytoplankton photosynthesis decreases, which is an important source of dissolved oxygen in water bodies**, and is almost completely lost. The dissolved oxygen in the water** is reduced, which is easy to cause flooding.