Why do koi fish get big belly disease and do they die?

Koi fish are very long-lived aquarium ornamental fish, the average lifespan of koi can reach about 70 years, and some koi fish will live longer. However, many friends who raise koi fish will complain about why the koi fish that Hua** bought home died in a very short period of time.

Studies have found that there are many willingnesses that cause the innocent deaths of koi fish. For example, the water quality environment is poor; The water environment is very variable; fish feed issues; insufficient dissolved oxygen in the water, etc.

Koi fish are highly adaptable to the environment, they can survive in water temperatures of 8-30 degrees. However, keepers should pay attention to the premise that the water temperature should remain stable and balanced, once the sudden change in water temperature exceeds 3-4 degrees Celsius, it will affect the normal life of koi fish. Koi fish can also suffer from not being able to adapt and getting sick or even dying as a result.

In addition, in addition to the water temperature, the amount of dissolved oxygen in the water, the hardness and pH of the water, and whether the water environment is clear are all important factors that threaten the life of koi fish. If the amount of dissolved oxygen is insufficient, the pH and hardness of the water cannot meet the requirements of the survival of the koi, and the water quality environment is turbid and bacteria breed, then the koi cannot survive normally and healthily, and it faces only a dead end.

At the same time, a reasonable and healthy diet is also an important reason to ensure the healthy growth of koi fish. Koi fish are omnivorous aquarists, and they do not have harsh requirements for food. But the standard for feeding them should be 60% animal feed and 40% vegetarian feed, with a reasonable combination of the two and then feeding koi fish.

And the food chosen must be fresh, nutritious, and fed daily. Otherwise, an unhealthy and unregulated diet will also threaten the life safety of koi fish.

As the saying goes, "fish farming starts with water". In addition to the inherited diseases and accidents of koi fish, most of the threats to its life come from the water quality environment. If a koi fish does not have a good living environment, then its growth cannot be guaranteed, and when its life is threatened, there is no need to talk about the value of appreciation.

This is overfed, to give it a diet, overfed easy to die (sincerely answer for you, please feel free to set it as "praise" Oh, there is no loss to you, thank you!) ）

Enteritis, fasting observation, generally do not die.

There may be several reasons for the koi fish to have a larger belly, depending on the feeding habits:

1. Feeding more, the fish is in normal condition: fat.

2. Normal feeding, other fish are normal, only this fish has a big belly, it is necessary to observe the state of the fish, whether it eats actively, whether it is anorexic to the bottom wall of the tank, and whether the fish's poop is slender and has a long drag.

A similar condition may be suffered from intestinal phlegm. Intestinal phlegm is a recurring condition, which can be caused by overfeeding at the bottom of the water temperature. ）

3. It may also be caused by parasites or more difficult diseases such as fluid in the stomach.

4. Pregnant.

Solution: Intestinal phlegm: Observe by fasting for two days. Then soak the fish in garlic juice, dry it and feed it for a period of time.

Other diseases: insecticidal and bactericidal treatment.

Koi: Biologically belonging to the cyprinidae family, there are more than 3,700 species of carp in 210 genera in the world.

It is a kind of high-end ornamental fish that is popular in the world today, and has the reputation of "living gem in water" and "art that can swim".

Morphological characteristics: Koi carp has a healthy physique, bright colors, changeable patterns, and majestic swimming style, and has high ornamental and feeding value. Its body length can reach meters.

Koi fish are distinguished by different colors, patterns, and scales. Among them, the butterfly koi was successfully bred in the 80s of the 20th century, and is famous for its long and smooth fins, which are actually crossed by koi and Asian carp, and are not really koi.

Koi fish come in one or several colors, including white, yellow, orange, red, black, and blue (a light gray shade due to the black beneath the scales), which can be matte or shiny.

Although there are endless variations of patterns, the best ones are the small round spots on the top of the head and the stepstone-like pattern on the back. Fish scales may or may not be present; large or small; Or there may be wrinkles, like "diamonds".

<> koi are prone to illness may be due to the poor water quality between the environment in which they lived before and the environment they live in now, and the koi feel uncomfortable with the current environment, and their immunity is weakened and they are prone to illness. It is recommended that new fish enter the tank before passing through the water.

Why do koi fish get sick easily?

1. Water quality problems

Water quality is one of the important factors affecting the health of koi fish. Common water quality problems include high ammonia, high nitrogen, high nitrate, etc. Ammonia is a toxic gas, and if the ammonia content in the water is too high, it will affect the respiration and metabolism of koi, which can lead to diseases.

Nitrogen and nitrates can cause acidification of water bodies, making koi fish less immune and susceptible to viruses and bacteria.

2. Malnutrition

Koi fish need to have enough nutrients to maintain their health. If the feed is unbalanced, or if there is too much in the tank, less food can be returned to each koi, leading to malnutrition. If you lack important elements such as vitamins and minerals, you are prone to diseases such as low immunity and ** disease.

In addition, the keeper should pay attention to control the amount and frequency of feeding, too much and too frequent feeding will lead to the deterioration of water quality, and also increase the gastrointestinal burden of koi fish, making them susceptible to disease.

3. The water temperature is too low or too high

Different species of koi fish have a suitable range of water temperature for growth. If the water temperature is too low, the metabolism and immunity of koi fish will decrease, which can easily lead to diseases. If the water temperature is too high, it will increase the respiratory and metabolic burden of the koi, and even lead to high body temperature.

In addition, a sudden change in water temperature is also one of the factors that can easily cause koi fish to get sick.

4. Lack of activity space

Koi fish are fish that like to swim, and they tend to feel oppressed and restricted in a tank that is too small. Long-term limited swimming space will lead to problems such as decreased immunity and muscle atrophy in koi Liangqiao. When the physical function of koi fish declines, it is easy to cause various diseases.

<> spring: prone to water mildew, wheel worm, melon worm, ring worm, hemorrhagic disease, gill rot, enteritis, etc. Summer:

Prone to anchor head eel. Autumn: prone to enteritis, hemorrhagic disease, gill rot, etc.

Winter: Prone to common fish diseases due to hypoxia and congestion. In addition, there are several diseases of bacterial infection, such as erythroderma, white mouth disease, printing disease, leukoderma and so on.