Can you eat a fish with red spots, what are the red spots on the fish and what is the disease?

Whether a fish with red spots on its body can be eaten needs to be analyzed according to the specific situation.

If there are red spots on the fish, it is during the handling process, or during the capture process, causing the scales to fall off and causing local bleeding, in this case, it will not affect normal consumption. If the fish itself does not deteriorate, it will not cause any health effects after consumption.

However, it should be noted that if the fish has red spots on its body due to a long period of time or due to a bacterial infection, the fish should not be eaten in this case. These red dots may be bruising spots or they may be caused by bacterial or parasitic infections. Eating these fish may cause health effects, causing symptoms such as abdominal pain and diarrhea.

Therefore, when buying and eating fish, it is necessary to carefully check the condition of the fish to ensure its freshness and safety. At the same time, it is also necessary to pay attention to personal hygiene and food hygiene, and avoid eating stale fish that may cause health problems.

Generally speaking, I can eat it. If you look closely, there may be an object about 1 centimeter thick and long with a needle tip in the red spot, which is called "anchor head flea" in fisheries, and is a common fish parasite.

It is parasitic only on the surface of the body. Harmless to humans. Just remove the scales. If you don't find it, the worm body has fallen off, and the red dot is a small inflammation, so it doesn't matter.

If the fish is poisoned or has a problem, it will not eat (it has no appetite) and it will not be able to be caught by you. Small problems, you can still eat it when you remove the scales. Rest assured.

The blood spots on the fish body are originally hemorrhagic diseases from the outside**, the blood color of the fish body is heavier, and some fish still have red blood spots, as big as soybean grains, as small as millet grains, what is the reason? To this end, the reporter conducted an investigation. The reporter saw in some stalls selling dead fish that these fish included carp, silver carp, three-flowered carp, etc., not only with blood on the outside, but also with round red spots on some fish.

The vendor said it was caused by scraping off the scales during fishing. But the reporter saw that there were red dots in places like the three-flowered carp that did not have scales, and the middle of the dots was white. For a few days in a row, the reporter saw such a fish with red spots on the body in several big morning markets in the urban area, and the agricultural trade and an aquatic product dealer introduced that such fish are infected products, and have nothing to do with falling scales, and the price of such fish is quite cheap, at least half cheaper.

Experts from the Institute of Fisheries Sciences affirmed the above statement. According to reports, if you see the symptoms of the above-mentioned fish, it is because the fish is suffering from hemorrhagic disease, not caused by scale loss. In the early stage of the disease, from the appearance of the disease, the mouth, abdomen, gill cover, orbits, fins and both sides of the body of the sick fish only show mild congestion symptoms, once the disease develops, the above-mentioned body surface congestion is aggravated, the muscles show blood symptoms, around the orbit congestion, the eyeball protrudes, the abdomen is distended, red and swollen, and there are bleeding spots.

Fish show a lot of blood symptoms, like some fish farmers if they feed the fish with drinks containing quinethanol, although such fish grow faster, but if used in large quantities or for a long time, it will produce a strong ***, the fish body is easy to be injured and bleeding, not resistant to pull nets, high transportation mortality, and the state has banned the addition of quinethanol to aquatic feed. In addition, some fish hemorrhagic diseases are caused by viruses, bacteria, and environmental stressors. However, consumers are reminded that they should try not to buy infected fish, and when consumers buy fish, they can carefully ** the fish body, or look at the fish gills, if there are white fish gills or purple and black, it is infected fish.

In short, in order to eat safe fish, it is better not to buy fish with bleeding spots and bleeding spots when buying fish.

There are several possible red spots on the fish:

1.Long parasites, the presence of parasites in the body of the fish can cause red spots on the fish.

2.Water mildew (white hair) Water mildew is also known as white hair. Due to careless abrasion of fish and high stocking density in wintering fish ponds, fish are very susceptible to water mildew.

Its pathogens are water mold and cotton mold, the mycelium form is slender, and branched, they are like roots at one end, born in the body surface of the fish**, and the rest are exposed outside the body.

3.Hemorrhagic disease, the causative agent is reovirus, the virus reproduction temperature is 20-35, and the optimal reproduction temperature is about 30. Symptoms:

The body surface is dark and slightly red, there is bleeding under the skin and muscles, congestion around the mouth, upper and lower jaws, the top of the head and around the orbits, and even the protrusion of the eyeballs, the gill cover and fin bars are also congested, the muscles are punctate or band-like hemorrhage, and the muscles of the whole body are bright red in severe cases. Sometimes ascites, no food, congestion but not erosion of the bowel.

4.Herpes virus, the symptoms of which are that the body surface of the sick fish is black and dull, and the mouth, muscles, and various fin bases are congested; Sometimes the operculum, head, and abdominal wall are also congested; gill filaments are bright red punctate or plaque-like hyperemia; Severely diseased fish, due to a large amount of congestion of other organs and tissues, make the gills pale due to blood loss, showing "white gills".

Resolution. 1.Fasting for 4 to 5 days, the whole box of antibiotic drug penicillin: 90x45x60 (PC) box 800,000 units, 1 in the morning and 1 in the afternoon, for 3 consecutive days as a course of treatment. Generally, 4 to 5 days can be **, the initial stage can be **, and the medium term can be controlled.

2.Thoroughly clean the pond with quicklime to reduce the chance of infection, and splash the whole pond with 12% chlorine dioxide or black cyclone.

3.The stocking of table salt in the fish pond for a week was also controlled.

4.A water bath with 3 to 5 parts per million (3 5 ppm), or 0.7 parts per million (ppm) of copper acetate, copper chloride, copper sulfate, or rhubarb extract has a good effect.

5.5 days in a row, and 2 days in an aquarium at the same time 0.6 parts per million (.

First of all, the most likely appearance of red spots on the body of the fish is caused by the bite of various parasites on the body surface. In other words, those red dots are actually the wounds of the parasite bites. Of course, there are two possibilities for this situation, one is that the parasite is in an outbreak state.

The second is that the parasite is gone, but the wound remains.

If it is the first case, then we must have the main thing, which is targeted insecticide. But it is certainly impossible to tell what kind of parasite the fish is suffering from. However, general body surface parasites are more sensitive to crystal trichlorfon, copper sulfate and ferrous sulfate mixtures.

When using crystal trichlorfon for insecticide, 90% of 300 350g of trichlorfon should be splashed with water in the whole pool per mu of water surface. When using copper sulfate and ferrous sulfate to kill insects, 350g of copper sulfate and 250g of ferrous sulfate are required per mu of water surface, and the whole pool is splashed with water. In the second case, the water body is mainly disinfected to prevent the wound from being infected by other viruses or bacteria.

For example, per mu of rice water surface, use 20kg of quicklime or 650g of bleaching powder, dissolve it in water, and sprinkle it evenly throughout the pool.

Secondly, this kind of red dot may be caused by trauma caused by our careless operation, or due to various special reasons, caused by emergency bleeding of fish. Of course, the further the trauma develops, it will become"Printing sickness"，"Erythroderma"，"Water mold"and other diseases. Isolated minor trauma generally does not cause fish death.

However, if the water condition is poor and the number of viruses and bacteria in the water body is huge, then it may cause wound infection, which may lead to other diseases. Therefore, if it is a red spot caused by trauma, then the most important thing is to disinfect the water body to kill viruses, bacteria and other pathogenic microorganisms in the water body. Same method as above.

Of course, if it is an emergency hemorrhagic disease, then it can cause a large number of fish to die. Once the disease occurs, it is more difficult. Therefore, prevention should be the main focus, such as ensuring a reasonable stocking density, scientific feeding and management, reasonable feeding, and ensuring a balanced feed nutrition.

If conditions permit, emulsifiers can be added to the feed, or some Chinese herbal medicines that protect the liver and choleretic chole.

In addition, there is another possibility that the red spots on the fish body are viral hemorrhagic diseases. If this is the case, the prognosis is poor. Therefore, this disease should also be prevented, and now it can also be prevented by vaccination.

In the event of this disease, the general external virucidal drugs are sprinkled throughout the pool, such as 10% poviodarone, and 500ml per mu of rice water surface. or quicklime, 30kg per mu of water surface. In addition, some internal drugs can also be added to the feed for internal administration, such as mixing in the feed, accounting for 1% of the feed amount of rhubarb powder, three yellow powder or allicin to make bait, feeding, etc.

1. Hemorrhagic disease.

1. Reason: The red spots on the goldfish may be caused by hemorrhagic disease, mainly caused by bacterial infection, external injury or excessive ammonia and nitrogen in the water. The pre-bleeding symptoms are not obvious, and in the middle stage, there will be sporadic white spots on the body.

However, in the later stages, there will be more and more bleeding sites.

2. Solution: Keepers need to move them to a sunny place first, which can inhibit the growth of bacteria in the water. If they can't receive enough sunlight, then it's best for the keeper to install a sterilizing ultraviolet lamp for sterilization, which can also sterilize and disinfect.

If the bleeding is severe, the feeder will also need to use a dip of furazolidone or potassium permanganate.

2. Erythema.

1. Reason: There are red spots on the goldfish, and there may be red spots on the body of the goldfish, and red spots will appear on the fish in the early stage of red spot disease. At this time, the disease is not serious, and the breeder can easily recover as long as he is in time.

However, in the later stage, the red dots will spread all over the body, and there may be suppuration.

2. Solution: If the situation is not serious, the keeper only needs to add some coarse salt to the fish tank, and they can be cured by relying on their own immunity. However, in severe cases, the keeper will need to dip the goldfish with powdery yellow or oxytetracycline.

Soak for about 4 hours a day for a week, and the goldfish can be cured.

This fish should have red spot disease, red spot disease is a fungal infection, causing the fish to have red spots on the body to start rotting, and eventually kill the fish, it is enough to use potassium permanganate to give dozens of pictures to the fish pond.

Red spots appear on the fish, which may be due to the occurrence of ** disease. Aquatic animals are also susceptible to this disease. The main symptom is most of the bleeding or inflammation on the surface or part of the body, and may even cause scales to fall off and decay.

This is due to congestion and inflammation. Fish grow in water, and when this happens, pathogenic bacteria are more likely to invade the fish's body, so it should be taken seriously.

A red dot on a fish indicates a hemorrhagic disease. This disease is caused by the herpes virus, and the body of the diseased fish will be blackened and lacking in luster, and the mouth, muscles and fins will be congested, and some will also have congested gill covers and heads, and the gill filaments will have bright red spots.

Hemorrhagic putrefaction - also known as red skin disease, red skin plague. [The pathogen] is Polar Fluorescens bacillus, which is a gram-negative bacterium. [Symptoms] is local or most of the body surface bleeding and inflammation, scales fall off, especially the sides of the body and abdomen are the most obvious, the base of the dorsal fin or all the fins is congested, the end of the fin is rotten, often rotten off a section, the tissue between the fin bars is also destroyed, in the form of a tattered paper fan (also known as mothed fin); Sometimes the upper and lower jaws and gill covers of diseased fish are partially congested.

At the beginning, the diseased fish only appears small red spots, but if they are not timed, the red spots will deteriorate into red spots, which will eventually lead to the death of the goldfish. **This fish disease is best to clean the fish tank and change the water at an early stage to allow the goldfish to recover on their own. In severe cases, the diseased fish can be soaked in yellow powder alone until the goldfish**, and then stop the medication.

Hemorrhagic disease.

Hello! Sometimes, in the place of the red dot, there will be parasites. Sometimes it's because I get injured when I hang a fish. I don't know what the disease is.

It only represents a personal opinion, don't spray if you don't like it, thank you.

Usually ensure a reasonable stocking density, scientific feeding and management, reasonable feeding, to ensure that the feed nutrition is balanced, etc. If conditions permit, emulsifiers can be added to the feed appropriately.

Freshwater fish with red spots on their bodies are crucian carp.

Crucian carp is a very common freshwater fish and has a delicious taste, so many people prefer to eat crucian carp. The reason why crucian carp has red spots on its body is mainly related to parasites, water pollution, and the growth environment.

Many fishing friends like to fish for crucian carp, and often post all kinds of large carp in the circle of friends. Influenced by this, it seems that everyone thinks that as long as it is golden yellow, it is a crucian carp. I want to tell you that this understanding is wrong!

The biggest difference between crucian carp and other crucian carp is the form, not the color.

Because the water in which the fish live contains different minerals, even the crucian carp may not be golden yellow, and many of the crucian carp in the wild river are white or cyan. Let's teach you to recognize crucian carp. The yellow-orange-orange crucian carp is the soil crucian carp?

Not necessarily! A crucian carp like this is a crucian carp.

Why do people like crucian carp? Old anglers must know it, because there are very few that specialize in breeding crucian carp. The reason is very simple, the growth of the crucian carp is relatively slow, in the wild environment, the crucian carp can generally only grow to more than 1 tael a year, and the growth is even slower after half a catty.

The crucian carp is slender, small, and has a small mouth, mostly golden yellow (different water quality).

There are only 28 lateral lines on the side line of the fish, and there are only 28 scales from the side line, and the scales are small. The back of the crucian carp is blue-black or yellow, the belly is white, the tail fin is thin and the color is lighter than the body color, the flesh is light red after cooking, the lip is very thin, and there is little or no meat on the gill shell; The head is round and small, and the transition between the head and the body is very smooth, so there is no protrusion of the body.

However, even in the wild river, the number of pure soil crucian carp is actually not much. It is mainly the farmed hybrid crucian carp and the release of crucian carp that have created new hybridizations. The number of crucian carp that leads to pure qualifications is decreasing.

In terms of weight, the crucian carp rarely exceeds one and a half catties, and it takes at least 8 to 10 years for the crucian carp to grow to 1 catty, and even if it grows to about two, it will take years.