Why did my fish die of old age?

Why do my fish die of old age

Generally, after a fish is infected or attacked by a pathogen, there will be a process and there are some signs, such as the sick fish being slow in activity and often swimming slowly in the water. On the surface, they do not gather in groups. If disturbed, they will surface after sinking slightly. There are also some fish that swim wildly, have a gray body color, and fall off their scales when they first get sick. Another example is that after the hemorrhagic disease of white crucian carp occurred, the wild small fish in the early fish ponds died. When signs of fish disease are found in a fish pond, timely measures should be taken for treatment to avoid the disease from spreading.

When raising fish, raise water first

For fish farmers, there are four types of water: one is new water, which is freshly dried tap water or newly dug well water. . Although this kind of water is very clean, it is very different from the environment in which fish live in nature. Since there is no nitrifying bacterial community in the water, fish excrement and scattered food residues decompose into ammonia after decay, and fish are easily poisoned. The second is old water, which is light green or light amber in color. It is rich in humus and beneficial microorganisms and algae. It has established a good ecological cycle system. After the nitrogen cycle, it is decomposed into nitrates that are harmless to fish. This kind of water is extremely beneficial to the growth of fish. The third is green water. The organic matter content in the water is too much, so cyanobacteria, green algae and brown algae multiply in large numbers, and the content of bacterial microorganisms increases sharply. The water is thick green and sometimes smells bad, which can easily cause the fish in the entire tank to become polluted. Die. The fourth is clear water, also called clean water. There are too many algae and microorganisms in the green water, which consumes all the oxygen in the aquarium, causing the death of algae and aerophilic bacteria, making the water extremely clear and without oxygen. And there is a lot of stagnant water with harmful anaerobic bacteria.

From this we can know that not all water is suitable for the life of goldfish. The most suitable water for the growth of goldfish is old water. The so-called water maintenance is the process of transforming new water into old water.

Most of the water we use to raise fish now is tap water, so the first step in raising water is to remove the toxic substance-chlorine in the tap water. The method of removing chlorine is relatively simple. Fill the water and let it sit for 2-3 days, or dry it in the sun for 1 day (if it is needed urgently, add 0.63 grams of sodium thiosulfate per 100 kilograms of water, and it can be used immediately ).

After the new water is dried, it should be put into the tank, turn on the filter, let the pump turn the still water into flowing water, and then add the fish that break into the tank. "Into the tank" is to put a few fish that are cheap, strong, and easy to raise into a new tank. After a few days of raising the fish, the fish's feces will decompose into ammonia in the water. This is the same as tap water containing ammonia. Too much ammonia will kill fish, so the most important thing in raising water is to remove ammonia from the water. Usually we use nitrifying bacteria to remove ammonia from water. Nitrifying bacteria can be added to the water, but they need attachments to survive in the water. If there is no suitable attachment, no matter how much nitrifying bacteria are added, they will not be effective and they will die in the water. Nitrifying bacteria usually attach to Filter cotton or bottom sand. In fact, flowing water will naturally produce nitrifying bacteria after a few days. This is also the most commonly used method for cultivating nitrifying bacteria. The cultivation of nitrifying bacteria is the second step in water maintenance.

The following will briefly introduce to you the subtle chemical changes of the nitrogen cycle and see how nitrifying bacteria work.

After the fish enter the tank, they will discharge ammonia and other wastes into the water. The ammonia concentration in the water will increase. The nitrifying bacteria in the living water can decompose the ammonia. (Note: It takes a week for the formation of nitrifying bacteria. or longer, so during this period, the fish suffer more seriously), when the nitrifying bacteria community is formed, the ammonia concentration will decrease until it is zero.

However, things are not that simple, because nitrifying bacteria can only convert ammonia into nitrite, but it is also poisonous to fish! So everyone needs to understand that when the ammonia concentration decreases, the nitrite concentration increases. So don't think that you can sit back and relax after the ecology is established. If you want to reduce nitrite, you must change the water regularly and quantitatively to reduce its concentration. This way you can maintain a relatively stable ecology and keep the water in a state of old water.

We should also tell everyone that old water is what we are pursuing, and green water also has many benefits for goldfish. For example, green water can make goldfish darker, but there are too many algae in this water and the fish cannot be seen, making it not suitable for viewing. And when there is too much algae, the fish will lack oxygen, so when raising goldfish in green water, attention should be paid to controlling the content of algae in the water.

Why do my fish always die?

Some of what is said above is correct and some is incorrect.

Let me summarize it for you: First of all, hot weather is not the direct cause of fish death, because the temperature in the water is around 25 degrees, and this kind of goldfish can live normally at 30 degrees, so the weather is not the first reason and the second reason. , fish disease? No, but it’s not impossible. But if the fish has no obvious trauma or bruises, then the fish didn’t die of illness. So how did the fish die? First of all, it’s definitely a lack of oxygen. Why is there a lack of oxygen? Because the water quality cannot dissolve. Sufficient oxygen for fish life. First of all, it is wrong to change the water every day. The water you change is directly from the tap water. The water contains a lot of chlorine, and this chlorine can cause the death of fish. Because the water for raising fish must be: dried. This drying is not just exposed to the sun, which will become stagnant water. It needs to be inflated with an oxygen pump while drying, so that the water will fully dissolve oxygen. The water needs to be dried for a long time. Fish can be raised in about a week. But if you raise fish, you can’t bask in the water every day. My two pools hold two to three tons of water. You can't change it every day. Then filtration is needed. Without filtration equipment, it is almost impossible to raise goldfish. What effect does filtration have? Filtration can make the water come alive. The water can more fully dissolve oxygen during the flow process to provide fish with life. Secondly, filtration can remove fish feces and food residues, filling the water with nitrifying bacteria (a type of bacteria that can decompose harmful substances) and various beneficial bacteria. In this way, the water will not turn yellow and smelly anyway, and the fish can grow healthily. In the end, your equipment mainly lacks a set of filtration equipment. The filtration equipment consists of water pumps, PP cotton, biochemical cotton, ceramic rings, etc. With filtration, I guarantee that you can also raise good fish. For more details, you can ask more questions or go to an aquarium store for consultation. Don't ask the street stalls. They will only tell you that you don't need a pump to raise fish, so they can sell more if you die more

Why do I die of old age when raising fish? All fish will die! What's the reason?

It seems that the poster is a novice in fish farming, and he is very new and has been completely fooled by profiteers!

1. Based on the calculation that your tank can hold 50 liters of water, the length should be around 60CM and the height and width should be around 30CM! The one that clicked on you for the first time was an arowana, a lucky parrot and a map! The problem should be that the density is too high! Water quality is difficult to maintain! Moreover, the ones you buy are those that can eat and poop, and the filter in the integrated tank will not work at all! If the boss can sell you so much fish, he is basically harming you! And even if it is a small arowana, your 50-liter water tank on the small map is not suitable for raising these types of fish. Don’t you think they will be crowded if you put so many fish in it?

2. The fish you chose for the second time is the right one! Your tank is suitable for raising small fish. As for why it still dies, 1. Maybe the fish itself is not healthy, so it will die. 2. It seems that the poster knows how to raise water. I don’t know if the poster was deceived into adding nitrifying bacteria. If so, If the nitrification system has not yet been established, the poster was in a hurry to fish and the fish was poisoned to death. 3 The fish bought by the poster were not passed through the water, but were poured directly into the tank. The fish could not bear the sudden change and died. !

In fact, there is basically no need to put medicine on the small fish you buy, unless you know what the disease is and prescribe the right medicine! Otherwise, it will be counterproductive if you don't master it well. Also, the small fish you buy need to pass through water. To put it simply, put it into your tank together with the bag containing the fish, so that the water in the bag has the same temperature as the water in your tank. , and then slowly add the water in your tank into the bag to let the fish adapt to the new water quality, and then put the fish into the tank. Furthermore, feeding should be regular and quantitative, feed less and eat more often! When changing the water, make sure the temperature doesn't vary too much and you'll generally be fine!

Why do my ornamental fish always die?

To raise fish, raise water first. The correct way to change the water is to use a pipe to use the siphon principle to remove one-third of the dirty water at the bottom of the fish tank and add new water of the same temperature instead of taking out the fish and replacing them all. New water has skin on the surface of humans and a layer of mucous membrane on the surface of fish. Replacing all water with new water damages the first line of defense on the surface of the fish. A series of indicators such as the pH and alkalinity of new water and old water are different. Do not replace them all unless absolutely necessary. New water. Replacing all the water with new water is very harmful to the fish and will cause them to die faster. In addition, if the fish is not raised well and has poor resistance, it is also the reason for the death of the fish. When buying fish, you should observe the fish's constitution and do not buy sick fish with poor constitution. Some fishmongers don't feed the fish at all, as long as they are alive when they sell them. When buying fish, it's best to see that they have bait for the fish. Buy this book and as long as you meet the requirements for ornamental fish, they will be easy to keep.

I have raised and bred many fish, but now they are no longer interesting. You should learn more and practice more

Why do the fish I raise die of old age

The fish I buy in different seasons are not good. If I raise it, the temperature cannot keep up. That is to say, although it is always said that if the water is clear, there will be no fish, but the water in the fish tank must be kept clean

Why does the goldfish I raise die of old age?

Hello poster, let me tell you about my method of raising goldfish. They have never died, and they grow very big, eatable, and very active. When someone comes to the fish tank, he swims over and is very friendly. 1. The fish tank must not be placed in a sunny place. 2. There must be an oxygen pump in the fish tank (which also has the function of filtering water). If the tank is about 0.8--1.0 meters, you need to use a larger oxygen pump. The fish buyer will introduce it to you, and it is not expensive. Just ten yuan. It can also filter water. The filter cotton should be washed every three or four days. 3. Don’t rely too much on the oxygen pump to filter the water in the fish tank. After getting up every morning, use a large fishing net to fish out a layer of fish from the bottom of the fish tank. (If you are free at night or there are too many fish in the tank, you can also fish out. Okay, it depends on your time) 4. Change about two-thirds of the water every week. First remove the water pipe from the oxygen pump to the filter box and put it in a bucket. The dirty water will flow out on its own. Then add new water. (Note: You can use a clean, lint-free iron dishcloth to scrub the inner wall. Make sure your hands are clean to make sure there is no soap.) 5. Be careful, add a small bottle cap to the water every time you inject new water. Potions, just ordinary sterilizing ones, cost a few yuan. Feed after three hours. 6. I feed him three times a day. If you don’t have time, you can feed him once. It doesn’t have to be expensive. Just mid-range fish food, which contains some small shrimps, costs more than ten yuan for a large bucket, because they will eat a lot over time, which is very expensive. It is best not to feed fish, worms, thread snakes, etc., because the water needs to be changed every day to clean out bacteria, which some people cannot handle. Small fish can eat medium-sized fish, and fish with long middle fingers can eat large-sized fish. Make sure each fish eats about 8 to 10 grains in one meal. Put in small amounts at a time, rush to finish them, and then put them in to ensure that there are no remaining pieces in the fish tank after eating. Food or water will produce red bacteria. Don't feed too much, because goldfish are very edible. Will hold up. But if you feed them too little, they will not grow quickly. 7. There must be a scavenger in the fish tank (a kind of fish that does not bite. They specialize in eating sticky things stuck to the inner wall of the fish tank. Otherwise, the fish tank will not be able to see clearly in a few days, and the water will become turbid when changing the water. They sometimes eat fish food, which is very fun) Another:: 1. I think there is no need to trap the water when changing the water. Just add tap water that has been left for a day. It should not be too cold. It is not good to trap the water for a long time. , what do you think. But be sure to add some sterilizing water and wait for more than three hours before feeding. 2.. When changing the water every three or four days, you can lightly brush the inner tank wall. If you need a larger brush, take out the fish, but definitely use the water brush in the tank without adding any chemicals, such as Lotion, soap, etc. Remember. But if you have scavengers, you generally don’t need to do heavy brushing. Ha ha/. 3. Besides, the oxygen pump needs to be plugged in all the time. How can it only be recharged for one hour? It won’t work. The above is my experience. I don’t know if it will be effective for you. I also summed it up after listening to the experience of many people. It is very effective. If your friend does the above, I can basically guarantee that the fish will be big and fat. I will be very grateful to you for your help. The environment it provides. If there are diseases like tail rot, white spots, etc., then go to the fish market to buy the corresponding medicine, go home, fish out the sick fish, and put them in a small tank to soak for three days. The people at the fish market will teach you. of. I wish my friends happy fish farming! ! ! 1111

Why do the fish in my fish tank always die?

There are several possibilities. They are exhausted {the fish doesn’t know whether it is hungry or not,

you feed it} or starved to death. The water quality is polluted and the fish are sick {you didn’t change the water},

You use tap water to raise fish {tap water needs to stand for a week before raising fish}

It’s suffocated {you didn’t put it in the fish tank The temperature of the aquatic plants is not suitable {adjust the temperature according to the species of goldfish}

Why do our fish keep dying?

It seems that the problem is with the water. When raising fish, you need to raise water first. Don’t rush to buy fish right away when opening a new tank. First, trap the water and expose it to the sun for a few days, with your mouth open, to allow the chemicals in the water to evaporate. You should also pay attention to the temperature. If you are raising tropical fish, the water temperature should not be lower than 20 degrees. Do not change the water all at once. If you change the water partially, the temperature of the water added should be the same as the original fish tank water.

The fish tank should also have a filtration system to filter out fish poop and other stolen matter in the water, which is beneficial to maintaining water quality. Only when you have good water can you raise fish well. Take your time and explore, as long as you like to raise fish, you will definitely raise the fish well.

Why do my ornamental fish always die after being kept for a long time?

When raising goldfish at home, the glass tank should be placed near a window in a ventilated and sunny place. Pay attention to the stocking density and make reasonable arrangements according to the size of the container. It is better to raise less than more. Because there is not much air circulation in the room, the water will become turbid if raised too much, which can easily lead to the death of goldfish due to lack of oxygen. If there is an air pump, you can raise more goldfish. If you find that the goldfish has a floating head, you need to turn on the air pump to oxygenate it, especially at night.

Live fish and worms are the most ideal feed for household fish farming. The water quality is not easy to deteriorate. Dried fish and worms and synthetic pellet feed are also acceptable. There are live fish and insect pests for sale in the market now, but it is very troublesome to buy them every day. For the dried fish worms sold in the market, you should choose relatively fresh ones with loose particles to feed the fish. Do not buy old and moldy dried fish worms to feed the fish. For artificial pellet feed, it is better to use full-price feed with complete nutritional components, which is available on the market.

In order to keep the water quality pure, the amount of feeding should be strictly timed and quantitative. It is usually appropriate to feed once to twice a day. Each feeding amount should be eaten within half an hour. The amount of bait should not be Feed too much. There are two harmful effects of feeding too much: first, when the fish is full, the metabolism level increases and the oxygen consumption increases, which can easily cause the goldfish to suffocate and die due to lack of oxygen; second, the leftover bait is prone to putrefaction and fermentation, causing the water quality to deteriorate, and Cause hypoxia. In fact, goldfish are relatively resistant to hunger. If they don't feed for a week or two, no problems will occur.

It is very important to keep the water quality pure when raising goldfish. You should often use a latex tube to suck out the residue, suck up the feces, residual bait and turbid water at the bottom of the glass tank, and then slowly replenish the fish that has been left for a day. New water. If aquatic plants float or the rockery is knocked down during operation, it must be restored to its original state in time.

The longer you keep fish, the more sediment will accumulate. Although it is cleaned every day, it cannot be completely removed. If the sediment increases and affects the clarity of the glass tank, it is necessary to completely change the water and clean the glass tank to keep the water pure, easy to watch, and maintain an excellent living environment for the goldfish.

Due to their small size, the rectangular glass jars used in ordinary households should not be kept in large quantities. For example, in a container with a length of 40 cm, a width of 25 cm, and a height of 30 cm, 6 to 8 goldfish with a length of 5 cm to 7 cm can be raised. Adult fish whose body length exceeds 8 centimeters should not be raised in small glass tanks. Instead, they need to be raised in large luxury glass tanks or ceramic tanks, with a small oxygenator as standby to prevent hypoxia. The above stocking density is only a reference. It also depends on the water temperature, the size of the fish and the quality of the water. It cannot be done mechanically. Generally speaking, fish are large and should be raised sparingly; they can be raised more in winter and less in summer; they can be raised more when the water temperature is low and less when the water temperature is high.