Why did goldfish die?

Why do goldfish in fish tanks get sick? When was the earliest? Be sure to turn off the goldfish when you choose it, or it's not your problem to die. New fish may break out of fish disease or die at any time within 1 month. Today, I mainly said that I was stable in Tanqueray and raised a guy who died more than 1 month! (The following remarks only represent the personal views of Lao Si, and it is inevitable that there is something wrong with them. Everyone is welcome to criticize and correct me. ) The factors that cause goldfish to get sick are "self-factors" and "human factors". A, among them, the self-factors mainly depend on the physiological factors of fish and the autoimmune ability of fish. 1. Self-factors: The reaction and resistance of goldfish to the outside world changes with age, health and nutrition. Like some parasitic diseases, it only occurs in the small fish stage. When the fish is big, even if it is a parasite, it will not cause disease. Moreover, many diseases only occur within 1 age of goldfish, such as white spot disease, which hardly occurs in 2-year-old fish. Healthy fish scales, skin and mucus can resist the invasion of pathogens, but sub-health is much worse. Because the delicate goldfish is spoiled for a long time, its relative resistance is much worse than that of ordinary goldfish, so pay more attention when raising it. As long as you pay attention to the nutritional balance of goldfish feed at ordinary times, ensure that goldfish eat mommy incense and are fully prepared, the resistance will be very strong. Is there a slogan that says' resistance is good for health'? 2, immunity: goldfish, like people, rely on phagocytes and white blood cells to eliminate pathogens in the body. If the immunity is strong, the ability to deal with pathogen invasion will be strong, otherwise it will be poor. If it exceeds the tolerance of fish, it will get sick and die. B, human factors are the main cause of goldfish disease, so focus on human factors. There are mainly the following eight kinds. 1, pathogens are brought in from the outside. Common fish diseases are caused by pathogens such as bacteria, viruses, parasites and water worms attacking fish. However, the live feed people usually feed, newly purchased aquatic plants, utensils and static substances may bring germs, so these foreign items must be strictly disinfected before entering the tank. As for your own hands, of course, you should wash them before and after, and don't put your hand into the fish tank if it is broken. There are dozens of diseases that fish can infect people, which will become an attack on the human body, hehe. The newly bought goldfish is also a huge hidden danger. If it is hastily merged, it will be disastrous for both the original fish and the new fish. The water in the original tank may cause the new fish not to adapt, hang up or get sick, and the new fish will secrete a lot of mucus to protect themselves, which is also harmful to the fish in the original tank. Therefore, newly fed fish must be kept in isolation for at least 1 week, then slowly poured into the water after being healthy and disease-free, and then merged into the tank after adapting. Some people who have just kept goldfish for a long time always like to go to the fish market and are reluctant to buy anything (in fact, so am I). Today they buy some grass and come back tomorrow. There are always new things in the jar, which may lead to inexplicable fish diseases, among which white spot disease is mainly infected in this way, and the fish in the jar are often infected. Of course, if fish are strong, like grass goldfish, they can carry it. 2. The fish body is seriously damaged, which generally leads to the death or disability of goldfish. When changing water or isolating disinfection, fish may be injured due to careless operation, or goldfish may jump to the ground, resulting in skin bleeding, phosphorus loss and fin fracture. Once, I caught my big golden plate with a small basin, and the fish suddenly struggled. I scratched it with my hand, causing massive bleeding. The bright red blood dripping from the gill cover scared me to death. I felt hopeless and added some salt. Fortunately, it was healthy and survived. After the fish was injured, all kinds of bacteria and molds swarmed in, especially the water mold. Usually fish are protected by mucus, so there is no chance. Now it's time for it to show its strength. If there are parasites in the water, they will also be obtained directly. Therefore, the injured goldfish should be treated immediately, and the affected parts should be disinfected (using rivanol and other family trauma drugs). After being put back into the water, salt should be added to the water, and it is best to isolate it for a period of time. Be careful when operating, especially the big goldfish, which is struggling badly. Try to catch as little as possible at ordinary times. By the way, when it comes to catching goldfish, I always catch goldfish by hand, and only when I am really big will I catch them with a big net. However, I have read some information recently. It is said that hand catching stimulates the fish greatly, which increases the sense of urgency of the fish and is prone to problems, so now almost all of them are caught with net bags. ) when fishing, you should face the direction of goldfish swimming, don't chase it. 3, this is about the feeding link, which is also a factor leading to chronic diseases of fish. When it comes to feeding, it is mainly feed (this word is a bit unpleasant). Because the pots at home are not as good as the natural environment and waters, everything is eaten, and goldfish are artificially fed by everyone. If you feed the goldfish in a single, undernourished or even inferior feed, it will lead to weakness and illness. If the food you feed is unsanitary, you will get enteritis (more serious). If you are hungry for a long time and feed too much, your intestines can't stand it, and you may die (the same reason as people). Of course, if you eat expensive and nutritious feed for a long time, goldfish will get rich disease, haha. Generally, 1 year-old fish should be intensively raised, and "dealing with" fish over 2 years old is enough. Intensive feeding means that the food should be refined (the nutritional structure should be complete, protein should be rich, and all kinds of vitamins and trace elements are not lacking), and it should be quantified regularly. Because everyone is busy and sometimes they can't take care of themselves, do you have time to wait on them? In fact, this is also very easy to solve, because goldfish have been with people for a long time, and they are omnivores themselves. You can eat anything you want, as long as it is chopped without oil. Like rice, steamed bread, bread, noodles and all kinds of green leaves, if you buy seafood to improve your food, don't forget them. They can eat fresh shrimp, snails and squid, but one thing, goldfish don't eat red meat! I've been mixing these things with pellet feed. Lie in bed in the morning, throw some granular feed casually (just a few seconds), and when you come back from work/school at night, cut some broken leaves for the fish, and order some broken shrimp and snail meat, and then give them some rice grains when you start eating. But don't give it to fish at midnight snack, it will cause indigestion. Although eating these is not intensive breeding at all, it is much better than feeding only granular feed, especially plant feed, which should be given frequently. When you go out, the older fish will be hungry for about 20 days. If you are too young, you will be fine. You must take good care of it, or you will be stunted after you die. 4. The temperature change of water goldfish is also a temperature-changing animal. Once the outside temperature changes more than 3 degrees, goldfish just feel uncomfortable. If it exceeds 5 degrees, you will catch a cold and get sick. Once the instantaneous temperature changes more than 7 degrees, it will hang up. There should be a thermometer in the cylinder at ordinary times, and the water temperature should be observed in seasons and rainy days when the temperature changes rapidly. Pay more attention when changing water at ordinary times, and be sure to measure it with a thermometer. Generally, the fresh water is lower 1 degree in summer than the old water, and it is better to be higher 1 degree in winter. I don't care about throwing medicine around because I often go to the fish market and buy medicine. I always want to add some water to the jar and sterilize it ... Maybe the system that worked well has been destroyed. Who will guarantee the quality of these drugs? The medicines used by people are still fake, not to mention fish! 6. The problem of PH value is too uncommon, because goldfish can adapt to a wide range, from 3.5 to 8.5. If you exceed it, you will die. 7. Water quality problem Water quality problem is a big problem for goldfish to get sick, because goldfish has a certain range of adaptation to the physical and chemical properties of water. If you don't adapt, you will have problems. There are two kinds of water quality problems: one is the deterioration of water quality; Second, the water is too new and too raw. If the density of fish per unit water body is high, the ecological environment will be bad. If the water is not changed in time, the excrement and secretions of fish will be too much, carbon dioxide and ammonia nitrogen will increase, microorganisms will breed in the water, various algae will grow in large numbers, the water quality will become mixed and deteriorated, and dissolved oxygen will decrease, leading to the deterioration of water quality. At this time, goldfish will have a crisis of survival, so it is strange not to get sick. Like some bacterial diseases, it often happens at this time. Goldfish may have black spots, inflammatory erythema, gill diseases, bloodshot eyes, blindfolded eyes, etc. Even if the fish is inflated, it will still float its head. If it is not improved, goldfish will soon die. Therefore, to control water quality, we must grasp two points, one is to control the density, and the other is to strengthen the filtration system. If the water is too raw and new, the damage to goldfish will be more serious than the deteriorated water. So be sure to pay attention when changing water or opening the cylinder. When changing water, it is best to keep some raw water in the tank (the whole tank is not used for sick water). When opening the cylinder, it is best to add some bottom sand, filter material and old water used by others into the newly opened cylinder. At the same time, it is necessary to strengthen pumping, so that water can quickly become an environment that goldfish can adapt to. The longer the better. It is often fatal for goldfish to rush over. 8. Oxygen problem Goldfish is a kind of fish that consumes oxygen, because it has a big appetite and a fast metabolism. Coupled with bloated bodies (especially those with hairy heads, such as hats, lion heads and tiger heads, which are more tired when floating their heads) and poor physical strength, goldfish with floating heads may give up their sense of survival for a long time! Ha ha! If you are often in a hypoxic environment, the fish's appetite will be reduced, and the digestion and absorption will be poor, which will also hinder the development of some physiological functions of goldfish. Without oxygen, fish can do nothing but float to the surface to save their lives. After a long time, they will suffocate. Therefore, before buying goldfish, it is necessary to buy an air pump system, usually a 3-in-6,5438+0 oxygen filter to prevent accidents. Although there are advanced aquatic plants in the water that can produce oxygen, it should not be too much. If oxygen is too saturated during the day, oxygen bubbles will attach to goldfish, causing bubble disease, and at night they will compete with goldfish for oxygen. Too little can't solve the problem. It is also a way to change water by discharging sewage every day, but it can only be used in small tanks, small fish and low density conditions, and frequent water change is also unfavorable to goldfish. When using single pump system (without filtration system), it should be noted that sewage must be discharged before use. Only pumping without filtering, the dirt in the cylinder is blown up and down, the water quality quickly becomes mixed and deteriorated, and the dissolved oxygen decreases, leading to floating head and even death. When the water temperature is high and rainy, the dissolved oxygen in the water will drop greatly, so be sure to pay attention to pumping it up. If you want to raise goldfish well, the first step is to make the aquarium well. In order to maintain normal water inflow and prevent water turbidity, the best way is to use a filter water purifier. There are many kinds of filters, which can be roughly divided into two types: in-cylinder type and in-cylinder type. The out-of-tank type has been mentioned in the article on goldfish breeding, so I won't talk about it here. The out-of-tank type is mainly used for small tropical fish and straw tanks, and the price is higher. Here I will pay attention to introduce the in-tank filter suitable for goldfish. Bottom filter plate-this is a device that places the bottom filter plate at the bottom of a cylinder used for laying sand and gravel, and pumps air with an air pump. Due to the buoyancy of bubbles, the filtered water is pushed to the surface from the pipeline. The top filter plate can be connected with the bottom filter plate to make the water at the bottom of the tank pass through the top circulation system, and the filter cotton can be placed in the top water tank, and then the filtered water is discharged from the water outlet to make the fish tank.