CATDOLL : CATDOLL: Why did the grass carp I raised in my own village suddenly lose their appetite in recent days? Is it sick?

Why did the grass carp I raised in my own village suddenly lose its appetite in recent days? Is it sick?

Generally, fish get sick mainly because of environmental poisoning or some pathogens invading fish. These pathogens are generally found in waters near fish farms. If they invade the fish in sufficient numbers, they will cause the fish to get sick. Therefore, it is necessary to take measures in the management of ponds and inhibit the survival of those pathogens in order to effectively reduce the incidence of fish getting sick.

If the pond is not well managed, the fish are very weak and their resistance is reduced, so they will get sick easily. For example, if the fish pond hygiene conditions are not up to standard, the temperature is hot and cold, and the water quality is poor, these reasons are all direct key factors that will cause the fish to get sick. If there is no separate discharge system in the pond, the fish will infect each other. If the water temperature in the Chi Queyuan Pond is too high, the organic organisms in it will decompose quickly and the aquatic organisms will breathe violently, and the oxygen in the pond will be consumed too much. If the weather then gets cold and the air pressure in the pond drops, most of the fish will suffocate and die due to lack of oxygen. If the water temperature in the pond is too low, especially when fishing in cold winter weather, some people are more likely to be injured, and dew disease is likely to occur in the spring of the following year.

When fish are sick, prevention is generally the main thing to do. Because fish live in water, it is difficult to detect when they are sick. Once the disease is serious, it will infect many fish. Even if it does not lead to the collective death of fish, it will directly affect the growth of fish. Therefore, it is of utmost importance to prevent the occurrence and spread of fish diseases. Nowadays, people have made good progress in preventing grass carp from getting sick, which means that grass carp getting sick is not incurable. When the fish are not sick, preventive work should be done. Once the fish is found to be sick, it should be treated as soon as possible.

It is best to clean the fish pond every year. After the fish are caught and sold, the fish pond should be cultivated before winter. When the fish pond is cleaned every year, some disinfectants are used in the pond to remove bacteria in the pond to reduce the chance of disease. Some people also use quicklime to disinfect the fish pond.

How big can ornamental grass carp grow when raised at home?

This ornamental red grass carp can grow very large. The red long-tailed grass carp can grow to 40 cm to 55 cm. As long as the breeding method is correct, it can be raised to a large size. The following is a discussion of the breeding method of this red grass carp.

List of odes:

1: Change water: The amount of water should be determined according to your situation. If there is a filter, it can be less, if not, it can be more. The water should be dried, and one-sixth of it should be changed each time; change the water about 10 to 20 days in winter and 5 to 7 days in summer. Special cases should be handled specially. Therefore, the advantage of having fewer large fish in the Yuanqing tank is that you can change less water and the water quality in the tank is better balanced.

2: Disease prevention and control: Common diseases of red grass carp include red skin disease, gill rot, and enteritis. The treatment method generally adopts a combination of oral and external application. External application mainly uses bleaching powder, chlorine dioxide and other disinfectants, which are used for 3 consecutive days; oral administration with "three yellow powder" bait has a better effect. For every 50 kg of fish body weight, use 0.3 kg of three yellow powder (50% rhubarb, 30% phellodendron, 20% scutellaria, grind into powder and stir evenly), mix with flour paste, and mix into feed for feeding, and use it for 3 to 5 days.

3. Feeding method: Feed mainly pellet feed, with a protein content of 28-32%, supplemented by green feed. Feed feeding follows the principles of "coarse first, fine later" and "four determinations and four observations". Generally, feed twice a day, and it is advisable for grass carp to finish eating within 2 hours and be 80% full. After feeding pellet feed continuously for a period of time, stop feeding pellet feed for 1 week, and feed raw grain feed during the interval. Feeding in the way of "coarse first, fine later, fine and green combined" can control the occurrence of hepatobiliary syndrome in grass carp.

Additional information

Forages should be long-leafed green grass with parallel veins, and round-leafed grass with reticular veins should not be used. Grass carp is mainly fed with ryegrass, Sudan grass and wild long-leafed green grass. When feeding, you should carefully observe the grass carp's eating habits to see which grass they like or dislike. Feed the grass they like to eat to promote their rapid growth. Feed the grass they dislike as little as possible or not at all. Try to choose fresh and tender aquatic plants, because fresh and tender grass has less cellulose than fresh grass, which is easy for grass carp to digest and absorb. If the grass is old and not fresh, it contains more cellulose, which is difficult for grass carp to digest after eating.

Red grass carp can grow to 0.8-1.5 catties. Body length 30-40 cm