The bait of the goldfish is completely fed by hand, and the amount of bait each time is not only related to the number of fish bodies, but also related to the strength of the goldfish's appetite at that time. The bait of goldfish is mainly fish insects and water earthworms in rivers and lakes, and the appetite of goldfish fluctuates dynamically due to changes in environmental factors. Changes in water temperature, the amount of dissolved oxygen, the level of air pressure, and the intensity of light can all cause changes in fish appetite, especially water temperature and dissolved oxygen. Since the strength of the goldfish's appetite varies greatly, it is a key to raising goldfish by correctly grasping the amount of bait. In the actual feeding, the keepers sometimes overfeed the bait, which not only causes the waste of bait, but also the residual bait will deteriorate the water quality and directly threaten the safety of the fish.
1.Water temperature.
The appetite of goldfish is closely related to the water temperature, and when the water temperature is 15 25, the appetite is vigorous. When the water temperature is above 30 or below 5, the appetite is significantly reduced. The appetite of a goldfish changes with the fluctuation of water temperature, but its changes are regular, and as long as you observe for a long time, you can find out the rhythm of the change of appetite of goldfish.
Goldfish bait needs to be provided on time, usually once a day, usually in the morning. The bait should be finished before 8 a.m. in the middle of summer, 9 a.m. in spring and autumn, and until around noon in winter. In spring and autumn, the water temperature is moderate, it is the most appetizing season of the year for goldfish, at this time should choose live bait to feed, such as after a bait, goldfish still gather or swallow the moss at the edge of the pond, can be used as a second bait. In the middle of summer or winter, the water temperature is usually higher than 38 or lower than 7, and the goldfish are obviously anorexic, so the amount of bait should be reducedWhen the water temperature is lower than 3, the bait can be stopped.
2.The amount of bait.
The basic amount of goldfish is often different depending on the age, species and individual differences. According to the author's practice for many years, taking live Daphnia as an example, in principle, the amount of fish raised in that year is about the same amount as the size of its head, the amount of fish raised for 2 years is about 1 2 of its head size, and the amount of fish raised for 3 years is about 1 3 of its head size. If you feed stagnant water fleas or pellets, the number should also be relatively reduced.
In addition to referring to the above standards, the amount of bait for goldfish on the day should also be flexibly controlled according to their appetite, water quality and the floating head of the goldfish in the early morning. Fish conditions change from day to day, and the amount of bait should also vary moderately. After feeding, it is advisable for goldfish to be able to eat in half an hour to 2 hours.
When the bait of goldfish is lacking, pellet feed can also be used. Pellet feed is formulated according to the nutritional formula, although it is rich in nutrients, but due to the lack of activity, its taste and nutrition are not as good as natural bait. After the pellet feed is fed, the water quality is easy to be turbid and corrupt, which brings certain difficulties to the feeding work, so the feeding amount should be small, and you can choose green water or low temperature season.
3.Water quality. Just changed the tank of clear water, the appetite of the goldfish is particularly strong, experienced keepers know how to change the water in the fish pond, the first 1 2 days only make the goldfish eat seven or eight full, wait for 2 3 days after the water turns green, and then feed the amount of goldfish, so that the goldfish are full and eat well. In the dark green water (commonly known as old water), the algae in the water tend to die, and the photosynthesis ability is reduced, such as goldfish overfeeding, their own oxygen consumption increases, which is easy to cause hypoxia in the water, so the daily feeding amount should be reduced compared with usual1 2. In the middle of summer, fish farming with clear water is mostly used, and in spring and autumn, fish farming with green water is mostly used.
4.Season
In spring, when the temperature warms up, goldfish are also raised from old water to clean water, and their appetite gradually increases. When the water temperature rises above 1s, the amount of bait should be sufficient. However, in the rainy season, if the air pressure is low, the amount should be small. In early summer, when the water temperature is suitable and the goldfish grow quickly, the amount of bait must be sufficient.
In the middle of summer, the water temperature begins to rise significantly after 9 a.m., and the goldfish have limited feeding time, so the amount of bait should be moderate, and it is advisable for the goldfish to finish eating before 9 a.m. If there is a surplus of bait, the high temperature in summer will cause the feed to ferment rapidly, and the water quality will deteriorate on the same day. In autumn, the temperature is suitable, the water quality has a long shelf life, and the amount of bait should be sufficient. During the wintering period, the goldfish enter a semi-dormant state, and the amount of bait should be small. In addition, for those goldfish, such as lion heads, tiger heads, etc., when the body length is 10 cm, the amount of bait should be moderate, to maintain the balanced development of the body, to prevent the imbalance of top-heavy body hanging upside down due to the overdevelopment of head sarcoma.
5.Juveniles. The juvenile stage is the rapid growth stage of goldfish, and sufficient feeding is the main job. Individuals with strong physique should be fed with high-quality bait as much as possible, and when conditions permit, the live daphnia in the fish pond can be kept uninterrupted, so as to promote the rapid growth of goldfish. Individuals with weak constitution or disease should focus on green water rest and reduce the amount of bait.
Goldfish with more serious conditions should stop feeding and provide an environment for the diseased goldfish to recuperate and recuperate. Goldfish with a body length of more than 7 cm have entered the development stage of breed traits. The advantages and disadvantages of goldfish species, in addition to germplasm factors, largely depend on the bait, especially the head of goldfish, such as tiger head, lion head, chrysanthemum head, hat head, etc., the plumpness of the head sarcoma completely depends on the content of protein and trace elements in the bait, then the focus of breeding should be shifted to promote the direction of trait development. Purposeful thinning and dense culture rotation methods can be adopted, and sufficient bait can be fed to make the fish body traits fully developed and obvious. Goldfish with a body length of more than 11 cm, the characteristics of the species are obvious, and the trait variation is completely developed, so the method of dense culture should be used to reduce the activity space of the fish body, promote the plump abdomen of the fish body, improve the curvy beauty of the fish body shape, increase the ornamental quality, and the amount of bait should be moderate.
6.Broodstock. The gonadal development of broodstock is closely related to water temperature, and when the water temperature is suitable, if high-quality live bait is used to feed, it can promote the rapid development of broodstock gonads. In order to ensure that the broodstock spawn as scheduled, the keeper should pay attention to the feeding work in the early stage of broodstock spawning, and select high-quality live bloodworms to feed in an appropriate amount to promote the maturity of the broodstock gonads. After spawning, the broodstock is weak and often accompanied by anorexia, so it should be kept in green water, the amount of bait is halved and the live bait is the mainstay, and after the physique is recovered, the appetite will also increase, and then the amount of bait should be increased.