CATDOLL : CATDOLL: Why doesn't the silver carp float on the water surface after it dies?

1. Why don't silver carp float on the water surface after death?

The reasons why silver carp does not float on the water surface after death are as follows:

Why do bottom fish float, but silver carp does not? Some farmers who have installed dissolved oxygen controllers in their ponds can see from the dissolved oxygen monitor that there is sufficient dissolved oxygen in the water. So the floating head at this time is obviously not due to dissolved oxygen. What is the reason? Bottom quality. Especially for some farmers who are eager to grow fish in the pond before winter, there is often overfeeding, and they do not notice that as the water temperature drops, the activity of digestive enzymes in the fish intestines is decreasing, and the amount of food intake is decreasing. As a result, the residual bait increases, the bottom quality deteriorates, and some toxic and harmful substances exceed the standard. For example, hydrogen sulfide with the smell of eggs exceeds the maximum dose that fish can bear. The bottom concentration is high and the surface concentration is low. Fish tend to avoid harm and enrich in the surface of the water body. As a result, silver carp does not float, but some bottom fish that are resistant to low oxygen float.

2. A fish pond in Anhui overturned, killing thousands of kilograms of fish. What caused this?

Thousands of kilograms of fish died in a fish pond in Anhui, and it is suspected that it was caused by a fishing dispute. Because a fisherman's fishing rod was confiscated the day before, the fish pond owner spent thousands of yuan to contract it for three years and had already released a lot of fish fry. Fishing was originally not allowed here, but people often sneaked in to fish. The fish pond owner confiscated the fishing rod of a fisherman. As a result, all the fish in the fish pond were landed the next day, and almost all the big fish died. It is very likely related to the fishing dispute that occurred the day before.

This fish pond is privately contracted, and it houses thousands of kilograms of domestic fish, including grass carp and silver carp, worth tens of thousands of yuan. This fish pond is mainly used for fishing and is not open to the public.

According to the fish pond owner, he has many years of experience in fish farming and would never let all the fish in the fish pond die overnight. The only possible reason is that he "offended" a fisherman the day before, and maybe he secretly poisoned him. It turned out that this fish pond was rich in resources and had long been discovered by some fake fishermen. They often secretly went to the fish pond to fish, and ran away when they saw the fish pond owner. When they found that the fish pond owner was not there, they came back again, fighting a "guerrilla war" with the fish pond owner every day. Just the day before, another person ran to the fish pond to fish, but was caught by the fish pond owner. In order to punish the fisherman, the fish pond owner confiscated his fishing rod and crushed it on the spot. Finally, the fisherman left cursing.

It was caused by revenge due to a dispute over fishing. The fish pond was a private fish pond contracted by an individual. After the fishermen were driven away, the other party became dissatisfied and retaliated by poisoning them.

The death of thousands of kilograms of fish in this fish pond in Anhui was related to some disputes that occurred near the pond before the incident. Because this fish pond in Anhui was privately contracted, there were thousands of kilograms of fish in the fish pond and individuals were not allowed to fish in the fish pond at will. However, some people always ignored the advice and fished in the fish pond. So the owner of the fish pond confiscated the fishing rods of some fishermen, and disputes and conflicts arose. The deceased thought that the matter of pretending to be Bing's brother was over that day, but on the second day he found that the fish pond had been poisoned and thousands of kilograms of fish had all died. The owner speculated that this was a deliberate revenge and he had called the police.

1. Someone poisoned the fish pond

In a fish pond in Huizhou, thousands of kilograms of fish were found dead. It was caused by someone poisoning the fish pond. According to the recollection of the owner of the fish pond, he had a dispute with a group of fishermen the day before all the fish died. He confiscated the fishing rods of those fishermen, which aroused their dissatisfaction. On the second day, they found that the fish pond had been poisoned, causing thousands of kilograms of fish to die. After the incident, he called the police and the local police opened a case and are investigating. It still needs to confirm the evidence as to who poisoned the fish.

2. It is normal that fishing is not allowed in private fish ponds

The owner of the fish pond said that he had contracted the pond privately and had put a large number of fish fry in it, and the contract period was three years. The fish fry put in it have grown up now, and he usually manages the fish pond, and there are clear signs that do not allow individuals to fish in the fish pond at will. However, there are always people who do not listen to the advice and come to the fish pond to fish, which has aroused the dissatisfaction of the owner of the fish pond, and thus a dispute has arisen. However, as the contractor of the fish pond, the owner of the fish pond has the right to manage the fish pond. It is normal for him to not allow strangers to come to the fish pond to fish, and it should not cause conflicts and disputes, let alone dissatisfaction.

3. Collect evidence to recover losses

Now the owner of the fish pond in Anhui has suffered huge economic losses. Thousands of kilograms of fish died in the attack, resulting in a complete loss of the entire fish pond. This is a big blow to the owner. He should not be depressed and should do the most important thing, actively look for evidence, collect evidence, help the police solve the case, find the murderer of poisoning, and recover his economic losses while holding him accountable for legal responsibilities.

Thousands of kilograms of fish died in a fish pond in Anhui Province. It is suspected that it was caused by a fishing dispute. Because a fisherman's fishing rod was confiscated the day before, the owner of the fish pond spent thousands of yuan to contract the pond for three years and had already released a lot of fish fry. Fishing was not allowed here, but people often secretly came to fish. The fish pond owner confiscated the fishing rod of a fisherman. As a result, all the fish in the fish pond were reported on the next day. Almost all the big fish died. It is very likely related to the fishing dispute that occurred the day before.

I think this is caused by human factors, weather reasons, temperature reasons, environmental reasons and air reasons.

It is said that it was due to a fish pond dispute. The owner of the fish pond confiscated a fishing rod from an angler, and as a result, all the fish in the fish pond died on the shore the next day.

3. Help] What are the factors that cause fish deaths during the winter?

Fish move slowly during the winter, eat less, and keep warm.

4. How could a 2-3 catties silver carp die in a pond at home?

Otherwise the fish will suffocate without oxygen. The water needs to flow.

5. Why do fish die when changing water in a large fish tank in winter? What can I do if the water is cold in winter?

Hello, it is common sense to keep the water temperature the same when changing water. Even for big and tough fish, the temperature difference is required to be within 5 degrees. Otherwise, they will die or get plagued.

The best bath water at home is a solar or gas water heater. Put hot water in a bucket, add cold water, add fish treasure and stir, measure the temperature and make sure it is consistent with the water temperature in the tank.

You only need to change a quarter of the water every week. Feed less in winter so that the water in the tank ages more slowly. You can change the water less often.

6. What diseases can easily cause death of cold-water fish in winter?

Pay attention to the temperature of cold-water fish, about 10 degrees, feed less. Feed once every 1-3 days. Observe fish white spot disease, enteritis, tail rot, and scale loss (loose scale disease). The water temperature is kept around 10 degrees and the water will not freeze. Oxygen must be added. In winter, cold-water fish can generally survive the winter as long as they pay attention to oxygen and feed less.