Longjing fish is not easy to raise, is it?

It is not difficult to raise fish with dzi beads, just like ordinary goldfish.

The following are the key points of keeping goldfish, please have a look:

1, Feeding: Feeding should choose nutritious animal feed or white sesame seeds. Animal feed, such as Daphnia, earthworm, Tenebrio molitor, caterpillar, dust mite, etc. The water quality of this feed is not easy to pollute, and goldfish grow fast. Don't feed the goldfish you bought. Because this kind of feed has too much starch, poor nutrition, difficult digestion and easy pollution of water quality, goldfish eat malnutrition and grow slowly.

2, lighting: it is best to put the fish tank in a sunny place 1-2 hours. In this way, ultraviolet rays in sunlight are used for sterilization. Play a role in preventing diseases. This can reduce diseases. Try to prevent fish diseases, supplemented by drug treatment. At the same time, due to photosynthesis, the color of fish is more bright and beautiful.

3. Change water: Changing water frequently can increase dissolved oxygen in water. When changing water, you can only change one-third to one-quarter, and you can't change a lot at once. The fish can't adapt. It is very important to keep the water quality of the aquarium clear. There is enough dissolved oxygen in the water to make fish grow and grow fast. Otherwise it will stop growing or even die. 4. Stocking density: rectangular aquariums in China are not suitable for raising more, but it is not suitable for raising less. For example, in a container with a length of 40 cm, a width of 25 cm and a height of 30 cm, you can raise 6 to 8 small goldfish with a length of 5 to 7 cm. For example, a round glass jar with a diameter of 26 cm and a height of 13 cm can raise 4 ~ 6 small goldfish with a diameter of 4 ~ 6 cm. Adult fish with a body length of more than 8 cm should not be kept in small glass tanks, but in luxurious large glass tanks or ceramic tanks, and equipped with small oxygenators for standby to prevent hypoxia. These stocking densities are only reference figures, but also depend on the level of water temperature, the strength of fish and the quality of water, which cannot be determined mechanically. Generally speaking, there are large fish and few animals. Raise more in winter and less in summer; You can raise more when the water temperature is low, and raise less when the water temperature is high.

Four seasons feeding points:

(1) Spring: The temperature is suitable in spring, which is the breeding season for goldfish and koi fish. Goldfish breeding mainly focuses on the spawning of parent fish and the care of young fish. When the water temperature is 18-22 degrees Celsius, the parent fish will chase each other. Generally, in the afternoon or evening, the parent fish will change into new water and spawn at dawn the next day. Goldfish should be kept in green water before labor, and the sexual activity of parent fish should be controlled by the stability of water color and water quality. After spawning, the parent fish should be raised in light green water, or mixed with some green water to maintain the normal development of the gonad of the parent fish. Generally, the second spawning can be carried out after 7- 10 days. Parent fish should be fed live bait as much as possible when breeding. In the south of the Yangtze River, the rainy season is around June every year. At this time, it rained continuously, and all kinds of harmful bacteria and parasites proliferated. This is the season for goldfish. Both parent fish and juvenile fish should be raised in green water, so as to reduce the number of water changes, maintain the stability of water quality, minimize stimulation and reduce the dosage of bait, especially in low-pressure and stuffy days. In case of sick goldfish, it should be isolated in time and prevented with drugs in advance.

(2) Summer: In summer, the temperature is high, the water temperature is above 25 degrees Celsius, harmful bacteria and parasites in the water are obviously reduced, and goldfish rarely get sick. Because the water temperature is too high, the algae in the water increase obviously, the time for the water to turn green accelerates, and the dissolved oxygen in the water decreases. At this time, the focus of feeding work is to prevent goldfish from heatstroke and hypoxia. Around noon, covering 2/3 of the pond with sunshade net or reed curtain can prevent the water temperature from rising too fast and provide a summer shelter for fish. Strengthening observation at night, especially around 3-5 o'clock in the middle of the night, is the time when fish are most prone to hypoxia. When the fish pond is seriously short of oxygen, it is necessary to replenish water or change water in time. If there is oxygen filling equipment, it should be turned on in time after night. During the day, if you find fish with green water or hot tails, you should change the water in time. Koi fish, which is reared in the open air, should pay more attention to changing water in time and turning on the oxygen-increasing equipment at night.

(3) Autumn: The water temperature is suitable in autumn, and the young fish produced in spring have reached the adult stage. At this time, it is necessary to focus on strengthening feeding to keep the ornamental fish fat, so fattening is the focus of autumn feeding. When the water temperature is 18-22 degrees, it is the time for harmful bacteria to breed in the water, so observation and drug prevention should be strengthened to avoid a large number of diseases and deaths of ornamental fish. Because there are few rainy days in autumn, the incidence of ornamental fish is light, but because the water temperature is suitable, autumn is the season with more incidence of ornamental fish. As long as it is actively prevented, it can generally be safely spent.

(4) Winter: In winter, the temperature is low, the water temperature is mostly below 10 degrees, and the incidence of ornamental fish is low. At this time, it is difficult to increase the body length of fish, but the obesity of fish can be increased, and ornamental fish has developed and formed. This is the busiest season for the sale of ornamental fish. This is the focus of breeding, keeping the water quality stable and keeping the ornamental fish healthy. When the water temperature is low, the goldfish should be moved indoors or in the greenhouse for the winter, or the water level in the fish pond should be deepened to 40-50 cm to avoid frostbite. In the north, because the temperature is often below 0 degrees, ornamental fish must be moved indoors or in greenhouses for the winter. Goldfish overwinter indoors in the north, and it is best to control the room temperature above 7 degrees so that goldfish can find bait, and feeding can be carried out every other day or three days. If the water temperature is raised to 18-22 degrees, goldfish can breed in the greenhouse in advance.