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The small fish did not turn its belly when it died, but sank to the bottom of the water with its back facing up, which may be due to the following reasons:
1.Fish swim bladder problem: The swim bladder is an important organ for fish to regulate the rise and fall of the body, if there is a problem with the swim bladder, resulting in the small fish being unable to regulate the body rise and sink normally, it may sink to the bottom.
If a small fish has a problem with its swim bladder before it dies, it will remain at the bottom after it dies.
2.Muscle relaxation: When a small fish dies, the muscles relax, causing the small fish to be unable to maintain a normal swimming posture and float and sink state. In this case, the small fish may sink to the bottom with its back facing up.
3.Posture after fish death: After fish die, their posture may change due to the influence of internal organs in the body. For example, the liver, intestines, and other organs of a small fish may be displaced after death, causing the small fish's posture to change.
In summary, the small fish did not turn their belly when they died, but sank to the bottom with their backs facing up, which may be due to reasons such as swim bladder problems, muscle relaxation, or changes in posture after the fish dies.
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Fish have swim bladders in their bodies.
It is the organ used to control the fish to float and dive in the water (but not all fish have this organ, such as cartilaginous fish such as sharks).
is an exception), after the death of the fish, because the amount of air in the swim bladder cannot be controlled, and the position of the swim bladder is in the lower part of the belly, the fish will often turn their belly and float on the water, but there are exceptions, such as the female dies during pregnancy, due to the weight of the eggs so that the female does not turn the belly. In short, it is not a 100% occurrence that fish will die and turn their belly, it can only be regarded as a common phenomenon.
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There are many reasons why a goldfish has a belly, and it may be because the goldfish has itFish bladderIt may also be caused by a problem with the goldfish changing the water.
The first reason is the lack of oxygen in the water, which causes the goldfish to have a hypoxic belly.
The second reason is that the water is changed carelessly, and the temperature difference between the water temperature is too large, which leads to the occurrence of goldfish belly turning.
The third reason is the imbalance of the fish bladder, also known as imbalance, which causes the phenomenon of goldfish belly turning.
Prevention and control methods: 1. For goldfish that have just been bought, do not rush to feed artificial feed. Start by feeding some fresh daphnia.
After a week, the goldfish have adapted to the new environment and recovered before they start feeding a small amount of artificial feed. The feed should be flaked as much as possible, this kind of feed is highly absorbent, and it is not easy to expand again in the goldfish intestine, causing constipation.
Pellets can be smashed with a hammer before feeding. Powdered feed is not recommended because it is easy to oxidize and spoil. Feed the fish with less to as much as possible, and observe the fish feces frequently, and stop feeding for a few days if there is no feces or white feces.
2. The feed of goldfish should be fed with live bait and artificial feed alternately, and interspersed with green feed. In sunny feeding facilities, goldfish can nibble on the moss attached to the walls of the tank on their own. Aquarium rearing can be planted with plant-based feed patches on the tank wall for goldfish to nibble on at will.
It is best to buy artificial feed specially developed for goldfish to prevent imbalance in the nutrient composition.
3. Before changing the water in the aquarium, place the new water near the aquarium and use a thermometer.
Measure the water temperature and confirm that the water temperature is consistent before changing the water. Pay attention to the maintenance of water quality on weekdays, so that goldfish have a comfortable living space, and only by having a strong physique can they resist the invasion of viruses and germs.
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Whether the fish floats on the surface of the water or sinks to the bottom after death mainly depends on the species of fish, whether the food has not been digested, the time of death, impurities in the water, temperature, bacterial load, and other factors. Slippery.
Generally speaking, the internal organs of the fish decay and produce gas, which reduces the specific excitation weight of the fish, and the fish will float. As a result, freshly dead fish basically sink to the bottom first and only come to the surface when they are not too fresh.
In addition, the species of fish can also affect the rise and fall of the fish. Some species of fish bones are more compact and denser than those of sedan lead, so they are more likely to sink to the bottom after death.
In addition, temperature and impurities in the water can also affect the float and sink of the fish. The increase in temperature will reduce the oxygen content in the water, and the substances in the body of the fish will change after death, producing gas, which will cause the fish to float. Too much impurities in the water will also affect the float and sink of the fish, and too many impurities will increase the density of the water, and the possibility of the fish sinking to the bottom after death will also increase.
Therefore, most of your fish sink to the bottom after death may be due to factors such as species, temperature, impurities in the water, etc.
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The internal organs of the fish decay and produce gas, which reduces the weight of the fish's body and the fish floats. In other words, freshly dead fish basically sink to the bottom first, and only come to the surface when they are not too fresh.
And the fish raised at home, once you find it dead, you will definitely catch it, and you will not wait until it rots and floats up to manage, 6, the fish generally sinks to the bottom after death, and it takes a few days to float up.
The fish in the pond are not easy to find when they sink to the bottom, and when they are found, the fish is floating on the surface of the water, but in fact it has been dead for several days. , 2, agree with the opinion of going upstairs. The reason why the fish float is due to the gas that is produced, which is relatively slow, so it takes a few days to float.
2, after reading their answers, I found that many people don't know how to pretend to understand!! Tell you that the cause of death of the fish is different, it will cause some to sink to the bottom and some to float after death!! Basically, fish deaths caused by general causes, such as lack of oxygen or general disease deaths, are floating!!
Note that it floats up soon after death!! The reason for sinking to the bottom after death is very complicated, generally speaking, the fish has rotten disease, which will cause the fish to die at the bottom of the finger and not float. 1,
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Oviparous fish small fish sink to the bottom and do not move, indicating that they will sink to the bottom and die, and viviparous fish are in a normal state after birth, and they can swim normally after a day. The small fish sinking to the bottom can also cause a change in water temperature, which can be alleviated by raising the water temperature by 2 3. Changes in the water environment will also make the small fish sink to the bottom and do not move, and the situation can be alleviated by resting for 2 to 3 days.
In the case of oviparous fish, after the eggs hatch, the small fish will swim in the water and sink to the bottom, indicating that they have died. It is normal for viviparous fish to sink to the bottom after birth, and they can swim normally after 1 day. Generally, the small fish do not need to be fed on the first day after hatching, and can be fed again the next day.
The newborn fish sinking to the bottom may be due to a change in water temperature, generally the temperature drops, the small fish loses its activity, and the overall mental state will also deteriorate, and it is easy to sink to the bottom. After discovery, the water temperature can be increased by 2 to 3 degrees for relief.
When the water environment changes, the small fish will also appear in the state of sinking to the bottom, generally after the small fish enter the new tank, the environment is not adapted to the situation of sinking to the bottom, and it can be relieved after resting for 2 or 3 days. If it is caused by the frequency of water change is too large, it is necessary to minimize the amount of water exchange, generally one third of the water in the tank can be replaced each time.
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1. Just entered the fish tank.
Ornamental fish generally sink to the bottom when they are just put in the fish tank, which is due to the fact that they are still in a relatively nervous state, unfamiliar and not adapted to the new environment, and it will take a few days to slowly recover. In this process, they must not be fed, and they will not eat after feeding, which will lead to water pollution and be detrimental to their adaptation to the environment.
2. Insufficient oxygen.
When there is not enough oxygen in the water body, some fish will float to the surface to breathe, while others will sink to the bottom. Usually in this case, the fish have little vitality and poor appetite, so they need to be oxygenated immediately to increase the oxygen level in the water. In addition to the oxygen pump, the oxygen content in the water can also be increased by changing the water.
Third, the water level is too low.
If the water level in the tank is too low, the fish will also sink to the bottom, because there is too little water for the fish to move, and it will reduce its movement. At this time, just add water properly and raise the water level a little. It should be noted that the water must be added to the dried water, and the difference in water temperature should not exceed 1-2.
Fourth, the fish are sick.
When the fish is sick, it will also sink to the bottom of the tank. This condition is similar to hypoxia, but it can be seen by the part of the fish that is diseased. When you are sick, you should first change the water, raise the temperature, and add salt, and if the situation does not improve, you should choose the right medicine according to the disease situation**.
Precautions for fish farming.
1. Water quality: The water quality should be kept clean, it is best to install a filter under the fish tank to filter the feces of the fish, and the water in the fish tank should also be changed regularly, preferably once a week.
2. Fish tank: choose a fish tank of the right size, and the density of fish should not be too large.
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Low water temperature: The fish is stuck at the bottom of the water and does not move, which may be caused by the water temperature being too low. Fish are cold-blooded animals, and the temperature of their bodies changes with the temperature of the water, and when the water temperature is too low, their activity level will be affected.
Poor water quality: It can also be caused by poor water quality, when the water quality of the environment they live in is poor, and the fish will hide under the water and do not move.
Sick: It could also be because of illness. When they get sick, they become weak and sink to the bottom of the water.
1. Increase the water temperature: When the keeper finds that the fish have been sinking to the bottom, the water temperature can be adjusted according to their habits, and it is best to adjust it to a higher water temperature, which can speed up their recovery and increase their vitality.
2. Water change: The water in the fish tank should be properly replaced, and the amount of water change will be controlled at one-third of the total water volume. It is best to open the filter and keep the water clean.
3. Symptomatic**: If it is because of illness, the breeder also needs to treat the symptom according to their performance**.
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After the fish dies, the reason why the belly will be facing the sky is because the fish has a swim bladder in the abdomen, which itself is responsible for regulating the gas, but after death, the gas in the swim bladder is sucked up, so that its buoyancy rises, and the back of the fish itself is muscles and vertebrae, which are more important, so it will cause it to turn over. In general, fish bladders have many functions, such as helping fish to float up and dive, protecting organs, and having the ability to assist breathing and vocalization.
The reason why fish will have their belly turned upside down after death is because the swim bladder in the body loses the function of regulating gas, which causes the inside to be filled with gas, which reduces the specific gravity of the lower part, and the back itself is a muscle and vertebrae, and the specific gravity is relatively large, so it will be turned over. While the fish can also maintain balance through the fins while alive, the balance cannot be maintained after death.
1. Floating and diving: When most bony fish float and sink in the water, they rely on the swim bladder. When the swim bladder inhales the gas, the overall density decreases, which increases its buoyancy and allows it to float to it easily.
Similarly, when the swim bladder expells the gas, the buoyancy decreases, so that the fish dive to a deeper place.
2. Protective organs: The swim bladder mainly exists in the abdominal cavity of the fish, and there are many internal organs here, which generate a certain space through the swim bladder to offset the damage of water pressure, so as to protect the internal organs.
3. Assisted breathing: For the African lungfish, the swim bladder is also one of the organs of assisted breathing, its swim bladder is similar to the lungs, the cavity is very large, and there are small air chambers around it, which can store a certain amount of oxygen, and when the water body dries up, they can continue to breathe for a period of time with the oxygen in the swim bladder.
4. Make sounds: Fish can also make sounds, but the vocal organs are not the vocal cords, and some of them can make sounds through the swim bladder. These fish are mostly males and vocalize to attract females to mate.
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Categories: Education, Science, >> Science & Technology.
Analysis: When the fish dies, the body loses control and cannot maintain a state of balance.
The swim bladder is on the abdomen and naturally rolls up.
There is an organ in the body of the fish that regulates the specific gravity of the body called the swim bladder. It can deflate or inhale at different depths to adjust the specific gravity of the body, so that the specific gravity of the surrounding water is the same, so that the fish can stay in the water effortlessly, after the fish dies, it loses its ability to adjust, and the swim bladder is full of gas, and the specific gravity of the body is reduced. The back of the fish is mostly a place with more vertebrae and muscles, and the specific gravity is larger, while the abdomen is mostly internal organs, with a large cavity and a small specific gravity, so after the fish dies, the abdomen with a small specific gravity will face upward.
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