What issues should be noted in the daily care of crucian carp farming?

Crucian carp is widely distributed in China and is farmed throughout the country. It is one of China's main food fish. Crucian carp has tender flesh, a delicious taste, and high nutritional value. It is rich in protein and various nutrients, and also has extremely high medicinal value. So what issues should be noted in the daily care of crucian carp farming?

1. Pay attention to stocking density

Generally, the adult fish density in a rearing pond is controlled at about 1500-1700 fish per mu. Differentiate the density according to water depth: if it is deeper, raise a few more. At a depth of 2.5 m, about 1700 fish can be raised. When the crucian carp grows to about one jin, it should be appropriately reduced, otherwise the stocking density will become too high. When the stocking density is too high, both disease and insufficient oxygen will occur very frequently. When you find that fish in the area frequently float to the surface, you should know that this means the stocking density is too high.

2. Pay attention to water quality regulation

Water quality regulation is a issue that everyone cares about very much, but many farmers think that water quality simply means oxygen. This is a mistaken idea, because insufficient oxygen is only one aspect of poor water quality. Water quality issues also include the content of trace elements in the water and the content of plankton, among other aspects. Therefore, people often encounter the situation where, even though an oxygen supply device has been added, the water quality is still very poor and the fish raised are not ideal at all. In this regard, it is recommended that you plant some aquatic plants or algae in the water. This can not only increase the content of some trace elements, but also provide crucian carp with abundant plankton.

3. Pay attention to polyculture issues

First is the proportion of polycultured fish species, generally between 10%-20%. Second, the polycultured fish species must not be carnivorous in any way and should be somewhat docile. Snakehead and catfish are species that absolutely must not be polycultured. More suitable species include grass carp and common carp, but the proportion of these two should be controlled at 10%, because these are fish species with relatively large food intake and can easily snatch the crucian carp's food.

4. Pay attention to feed size

In fish farming, attention must be paid to feeding issues in the early stage, especially regarding feed size. If it is too small, the feed will disperse as soon as it enters the water, which is not conducive to the young fish eating. If it is too large, they cannot swallow it. During the fry stage, the feed fed is in the form of crushed pellets. Young fish are raised at a relatively dense fry density, so if the feed disperses in the water, it will not be wasted. Later, when the fry grows to 20-50 g, the feed size should be controlled at about 0.1 cm. At 50-250 g, the feed must not exceed 0.2 cm. After 250 g, the feed size can be controlled at 0.3 cm.

The above is Tuliu.com's introduction to some issues that need attention in crucian carp farming. Fish farming is a relatively troublesome type of farming. Because fish remain in the water for a long time, it is often difficult to judge when problems arise, and inspections can only occasionally be done by sampling. Therefore, daily management is very important.