2. Pay attention to the density of fish. Goldfish like large space for activities. Novices often buy their favorite fish when they see it. They seldom care about how many fish can be raised in the tank. Even if they ask the fishmonger for advice, can they ask you to buy less for the benefit? According to my experience, it is more appropriate to raise fish with a length of 1 cm with 3 liters of water. If your fish tank contains 65,438+000 liters of water, you can keep two fish with the size of 65,438+00 decimeters and eight fish with the size of 5-6 decimeters (relatively narrow).
Goldfish are more active, strong and colorful in a larger space. Excessive density easily leads to hypoxia and deterioration of water quality, which is the main cause of illness and death of goldfish.
3. How to feed. The most important thing to pay attention to is to control the feeding amount, once or twice a day, and it is advisable to eat it within 5 to 10 minutes. Feed less in rainy days and not at night. Fish need to consume more oxygen when digesting food. On rainy days and nights, the air pressure is low, so the dissolved oxygen in the water is low. In this case, feeding the fish may lead to serious hypoxia in the water and kill the fish. Most dead fish occur at night, and severe hypoxia in water is one of the main reasons.
4. The bait must be clean. Feeding unclean bait can easily lead to fish diseases. It is recommended to buy brand-name frozen fresh foods produced by professional companies, such as red worms and bumper shrimp, supplemented by beans and vegetables, to maintain comprehensive nutrition. Although goldfish like live food best, live food grows in polluted water environment, so be careful when you put it in.
5. Keep the water clean. Goldfish eat more, consume more oxygen and discharge more waste, which will pollute the water quality, breed germs and lead to goldfish death. In order to keep the water clean, a filter should be installed. When the educt is pumped out from the bottom of the cylinder, one tenth or a little more old water should be replaced every day. Filtration with aeration design can be adopted, and filtration and aeration can be carried out at the same time, which not only purifies water but also supplements oxygen.
6. Don't bring oil into the water. Oil pollution will float on the water surface to isolate the air, so that the oxygen in the water can not be replenished, leading to the death of goldfish due to lack of oxygen. Eating meat or applying hand cream on your hands will bring oil into the water and should be carefully avoided.
7. Don't change too much water at a time, which will lead to water quality discomfort. Water quality includes pH value, hardness, residual chlorine, dissolved oxygen, nitrate, sulfide, protein and turbidity. Goldfish have adapted to live in the original water quality, all changed water, and suddenly changed the water quality, so goldfish can not adapt, suffering from water incompatibility.
If you need to brew the bottom and wash the tank, you should also leave some old water. After cleaning the cylinder, put the water back into the cylinder and then add new water.
8. Don't change the water temperature drastically. Goldfish can live in a wide temperature range and can still live under ice in winter. As long as they are not exposed to the sun, they can live normally in hot weather, but if the temperature changes sharply, they will get sick or die. The water temperature of fishmongers drops to 5 degrees or even lower in winter, and it is common for them to be above 30 degrees in summer. When you buy fish, you should pay attention to the water temperature in the aquarium and the water temperature in your fish tank. The deviation should not be too big, generally within 4 degrees is allowed.