CATDOLL : CATDOLL: What are the common diseases in snakehead fish farming?

1. What are the common diseases in black fish farming?

Saprolegniasis that harms fish eggs, myxosporea and white spot diseases that harm fry, etc. Preventive measures should be taken throughout the fry production process. To prevent and control aquatic bacteria, 0.1ppm malachite green and 0.5ppm methyl blue can be used to disinfect the entire pond. For bacterial diseases, sulfonamides and antibiotics can be mixed into the feed and fed. For protozoa or other parasites, low-toxic organophosphates can be used for prevention and control.

When breeding snakehead, the fish pond area should not be too large, 1 to 2 mu is the best. The water depth should be 1.5 to 2 meters, the bottom mud should be shallow, and the inlet and outlet should be equipped with escape prevention nets. Disinfect the fish pond with quicklime before stocking. At the same time, plant 80 to 100 cm wide water lilies around the pond. This can prevent the snakehead from jumping out of the pond and provide shade.

Enteritis, body rot, parasites, enteritis is more common, you can use white feces to stop mixing feed and feeding.

2. Which fish is more “dirty” and more likely to have parasites?

Fish that are not fresh, fish that live near chemical plants, and fish with broken bellies are the dirtiest, and they have many parasites in their bodies. Now many people go to the vegetable market to buy fresh fish and let the merchants process them on site first, but some people choose to buy already killed fish in order to save time or for convenience. However, when choosing killed fish, it is difficult to judge whether the fish died abnormally or was killed by the merchant. In recent years, rivers polluted by chemical plants have become more and more widespread. When building factories, the bosses of general chemical plants usually choose to discharge them into nearby rivers for convenience and to quickly dispose of waste industrial discharge books. Therefore, when we buy fish, we ask where these fish are produced and whether they live in polluted rivers. The third type is fish with broken bellies. People who often buy fish should find that the same type of fish has broken bellies, while fish do not. Fish will be cheaper than fish that are not broken because there are many harmful substances in the fish's belly. For example, the common black carp, silver carp, black carp, etc., all have more parasites. Don't eat fish that is not cooked well, such as grass carp, black carp, etc. There is a lot of protein in fish meat, which is easy for people to absorb, and the fat content is also low, which is very friendly to girls who are losing weight. Moreover, tuna and sardines are more fishy in taste, and the ones with lighter fishy smell are flounder and large yellow croaker. Flounder is more suitable for stewing fish. Fish brain has a certain effect on Alzheimer's disease, and fish bubbles are also very delicate and smooth in taste. Fish scales cannot be eaten, and they should be scraped off when eating. Fish tail has the effect of calcium supplementation. Fish eyes are very high in vitamins, which can improve eyesight, gout patients, bleeding patients, and patients with liver and kidney function. Patients who take certain medicines are not suitable for eating fish, because fish will be harmful to their bodies. There are many ways to cook fish, and they are also very delicious, such as stewing, braising, and boiling fish, which will not destroy its nutritional value. We can try to do it.

The two dirtiest parts of fish have many parasites, but they are the "favorites" of many people.

Pomfret, Pomfret is an invasive fish species that often feeds on the eggs of other fish. Pomfret contains a large number of parasites and is not recommended for use.

Snakehead carp is relatively dirty because it is a carnivorous fish and often eats other fish, which causes it to carry the diseases of other fish.

Fish with incomplete bodies, fish living in polluted water sources, and dead fish are all very "dirty" and are much more likely to have parasites.

3. Does snakehead fish have natural enemies? What are their natural enemies?

Snakehead carp has natural enemies, and the natural enemy of snakehead carp is the taimen salmon.

Giant Taimen is a rare cold-water carnivorous fish in the north, several meters long and weighing hundreds of kilograms. It is ferocious and alert by nature, hiding in deep water all year round. Its body is reddish-brown during the breeding season, and it is known as the big red fish. It is now extinct in most parts of the world, with only a small number of remnants remaining in Kanas Lake in Xinjiang.

Taimen belongs to the order Salmoniformes, family Salmonidae, subfamily Salmoninae, genus Taimen. Commonly known as Zheluo fish, Zheluo fish, Zheluo fish (in Northeast China), big red fish (in Xinjiang), it is a critically endangered fish. The body is long, slightly flattened, and cylindrical. The head is flat, the snout is pointed, and the mouth is large and terminal. The upper jaw is obvious and free, extending backward to behind the posterior edge of the eye.

Additional information:

Taimen salmon are mostly distributed in the Heilongjiang, Tumenjiang, Irtysh and other water systems in my country. Abroad, they are distributed in rivers such as the Lena River to the Pechora River in Siberia, Russia, and the Volga River and the upper reaches of the Ural River in Eastern Europe.

Taimen grows fast and develops at an equal speed. It is a large economic fish. Generally, individuals weigh more than 3 kg, and the largest can reach 50 kg and be more than 1 meter long. The meat is delicious and tender. It is a nutritious fish and a specialty of high-altitude areas. It is a precious food in the production area.

There is no detailed report on the number of Taimen salmon resources, but according to the "Heilongjiang Province Fishery Resources" (1985), the number of Taimen salmon in Heilongjiang has decreased significantly compared with the past, and almost accounts for no fishery in the province. The main reason for the significant decline in resources is overfishing during the breeding season, which greatly reduces the number of supplementary populations, and environmental pollution that destroys the living environment. No effective protection measures have been formulated yet.

Reference: Baidu Encyclopedia - Giant Taimen

Taimen can eat snakehead fish, but it is rare. Generally speaking, snakehead fish has no natural enemies in China except humans.

The natural enemies of black carp are all ferocious carnivorous fish. The big ones eat the small ones, and of course the big black carp can also eat other small fish.

Freshwater eels will eat young snakehead fish, which will limit the reproduction of snakehead fish to a certain extent.

There are special cases, such as if there is a bear nearby, then it is a bear, and if there is a person nearby, then it is a person. Of course, the most likely possibility is a parasite.

After all, it is not small and does not live in shallow water. It is not a marine fish and nothing can eat it.

Typing is not easy, if you are satisfied, I hope you will accept it.