Why did the small fish that I just bought die when they were fed oxygen normally?

They are fed nutritious animal feed and white sesame seeds. Animal feed such as daphnia, earthworms, mealworms, green worms, skin worms, etc. The main feeds are earthworms and sesame seeds.

Both red and black earthworms can be fed. Do not feed low-quality goldfish feed that you have bought. Because this feed has too much starch, poor nutrition, is not easy to digest, and the water quality is easy to pollute, goldfish eat malnutrition, goldfish growth is relatively slow, and it is easy to get sick.

2. Light: It is best to put the fish tank in a place where there is sunlight for 1-2 hours. In this way, the sun's ultraviolet rays are used for sterilization.

It plays a role in disease prevention. This reduces the number of diseases. Try to prevent fish diseases as the main thing, supplemented by medication.

At the same time, due to photosynthesis, the color of the fish body is also relatively bright and beautiful. 3. Water change: Frequent water change can increase the dissolved oxygen in the water.

When changing the water, you can only change one-third to one-quarter, and you can't change a lot at once, and the fish are not adaptable. It is important to keep the water in the aquarium clear. Fish with sufficient dissolved oxygen in the water can grow and grow quickly.

Otherwise, it stops growing or even dies. 4. Stocking density: Due to the small size of the domestic rectangular aquarium, it is important not to raise more, and it is advisable to raise less than more.

For example, in a container with a length of 40 cm, a width of 25 cm, and a height of 30 cm, 6 8 small goldfish with a length of 5 7 cm can be raised. For example, a circular glass tank with a diameter of 26 cm and a height of 13 cm can raise 4 6 small goldfish of 4 6 cm. Adult fish with a body length of more than 8 cm should not be raised in a small glass tank, but need to be raised in a large glass tank or ceramic tank of a luxurious type, and equipped with a small aerator for backup to prevent hypoxia.

These stocking densities are only reference numbers, and they also depend on the water temperature, the strength of the fish and the quality of the water. Generally speaking, the fish are large and have a small number of feeds; More in winter and less in summer; When the water temperature is low, you can raise more, and when the water temperature is high, you can raise less. Domesticated goldfish, if you master the above points, you will be able to keep the goldfish healthy and lively, colorful, swim in the water, loved, so that you never get tired of watching, and have endless fun.

Small fish should not be fed too much food, (otherwise it will die) the water in the fish pond should be changed from time to time.

But there is also a problem with the fish when you buy it, because I used to like to raise fish when I was studying, but the fish hung up after buying it for more than a week... The longest time to raise is just over a month. Small fish are not very easy to raise.

It may be that the fish is almost out when I buy it, and the water for raising fish must be exposed to the sun before it can be used

Fish will die of hypoxia for 2 3 hours, after the fish tank is hypoxic, you can use an oxygen pump to oxygenate the tank, generally need to be oxygenated for 2 4 hours a day. In summer and rainy weather, the temperature is low and the air pressure is high, and the oxygen capacity in the water will decrease, so it is necessary to prolong the time of oxygen infusion. Oxygen can also be supplemented by changing the water, generally every 2 to 3 days, and strengthening the filtration system in the tank.

Fish will die of hypoxia for 2 3 hours, after the fish tank appears hypoxic, you can directly use the oxygen pump to supplement oxygen, generally need to flush 2 4 hours of oxygen every day, if it is a medium and large fish, or the feeding density is larger, you also need to keep oxygen.

In addition, in summer and rainy weather, due to the low temperature and high air pressure, the amount of dissolved oxygen in the water will decrease, during which the time of oxygen needs to be appropriately prolonged, so that the fish can grow healthily and will not die due to lack of oxygen.

In addition, the oxygen content in the tank can also be increased by changing the water, and the water can generally be changed every 2 3 days, and the water quality changes quickly in summer, and the water needs to be changed every 1 2 days. The filtration system of the fish tank needs to be strengthened to reduce impurities and bacteria in the tank, and to increase the oxygen content in the tank.

Summary. Hello dear, after the fish dies, it will first sink to the bottom of the pond, the deeper the water pond, the lower the water temperature at the bottom, which is relative to the summer and autumn seasons, but if it is winter and spring, in the process of measuring the water temperature, it is found that some water depths are more than three or four meters. The deeper the water, the higher the water temperature, especially some sand ponds, which are small in area and deep in water, which are easy to form water temperature stratification.

I measured that in the current season in Sichuan, after the fish die, 10-15 hours, the dead fish will surface; In winter and spring, when the water temperature is 15 degrees, it takes about 20-30 hours for dead fish to start to surface. In other words, if the water temperature is measured in degrees Celsius and the time is measured in hours, the time from the time of death to the surface of the fish is multiplied by the water temperature is between 280 and 520, and this value is temporarily set as the floating value. When the water temperature is lower than 15 degrees Celsius, this value is different, which may be related to the decomposition of bacteria and various enzymes in ginseng and fish meat.

When the water temperature is above 15 degrees Celsius, this data is adaptable and very accurate.

Hello dear, after the fish dies, it will first sink to the bottom of the pond, the deeper the water pond, the lower the water temperature at the bottom, which is relative to the summer and autumn seasons, but if it is winter and spring, in the process of measuring the water temperature, it is found that some water depths are more than three or four meters. The deeper the water, the higher the water temperature, especially some sand ponds, which are small in area and deep in water, which are easy to form water temperature stratification. I measured that in the current season in Sichuan, after the fish die, 10-15 hours, the dead fish will surface; In winter and spring, when the water temperature is 15 degrees, it takes about 20-30 hours for dead fish to start to surface.

In other words, if the water temperature is measured in degrees Celsius and the time is measured in hours, the time from the time of death to the surface of the fish is multiplied by the water temperature is between 280 and 520, and this value is temporarily set as the floating value. When the water temperature is lower than 15 degrees Celsius, this value is different, which may be related to the decomposition of bacteria and various enzymes in ginseng and fish meat. When the water temperature is above 15 degrees Celsius, this data is adaptable and very accurate.

When a fish dies from lack of oxygen, it sinks to the bottom, and after dying for a period of time, it will be allowed to float up as the body decays and produces gas. The reason for the lack of oxygen is mainly that there is less water in the fish tank, or too many fish are raised, resulting in a relatively large feeding density and a large consumption of oxygen in the water body, and it may also be a problem with the water temperature, such as the temperature is relatively high, and the dissolved oxygen will also be reduced, resulting in the occurrence of hypoxia.

<> fish that are injected with oxygen die, usually because there is a problem with the water quality or water temperature. Although fish live in water, they also need to breathe, and oxygen can increase the dissolved oxygen in the water, so it is very beneficial for fish. Although the fish will suffer from bubble disease when the oxygen is saturated, the oxygen pump does not inject pure oxygen, but air, and the oxygen content itself is not particularly high, and it is insoluble in water, so it will not cause oxygen saturation.

1. Abrupt change in water temperature. A sudden, large change in water temperature can cause the fish to die in a short period of time. This mostly happens in fish that are more sensitive to water temperature, especially small fish and juveniles.

2. Abrupt changes in water quality. Water quality problems mostly occur in newly bought fish, new fish are not suitable for water quality, just put in may be fine, may die overnight.

3. Changes in water oxygen content. In fish tanks without circulating water pumps, various organisms in the water in the summer are prone to hypoxia in the early morning after overnight oxygen consumption, causing dead fish, or causing sudden changes in water quality, and the fish with poor tolerance will die immediately; Too much residual bait in the water, decay, decomposition, will also make the water body seriously hypoxic; Sudden damage to the pump, a stop, and a high density of fish can also cause hypoxia, which can lead to the sudden death of the fish.

4. Accidental injury. Fish are less likely to die due to accidental injuries, such as large fish that may hit their heads when they jump, causing brain** or internal hemorrhage; Excessive suction of the pump motor can also cause damage to the fish; The use of toxic pesticides and other drugs in the room, such as unprotected fish tanks, can also cause sudden death of fish.

The water just needs to be changed, and it needs to be disinfected regularly, including fishing gear.

Those who starve to death, those who are strutted to death. Die alone,