CATDOLL : CATDOLL: Knowledge about fish farming

1. Knowledge about fish farming

Please be clear~~ What kind of fish do you raise, what kind of tank, what kind of filter, etc.~~~ If you are a beginner, I suggest you raise peacocks~~~~ The water temperature can be 26 degrees, and a 30W filter is enough for a one-meter tank~~ You need to put filter cotton, biochemical cotton, and glass ring in the filter box~~~

2. Some knowledge about fish farming

First, before going out, clean the fish tank thoroughly, suck out the dirt, clean the filter, replace the prepared water, stop feeding, and check if the filter is faulty (confirm it is normal with a timer, and adjust the temperature). After handling it, you can go out. Of course, you have to pray that there will be no power outages :) Someone asked what to do with the fish food? You don't have to worry about it. Fish have a strong resistance to hunger. Adult fish will not starve to death even if they don't eat for half a month. If you feed too much before going out, it will cause water pollution and cause trouble. But if you have young fish, it is best not to let them starve for a long time, otherwise they will not grow big or fat.

Reasons why fish are prone to illness

Fish diseases are caused by internal and external factors. The internal factors are mostly poor physical fitness of fish, low disease resistance, and susceptibility to diseases. These fish are mostly inbred and malnourished fish. The external factors are more complicated, mainly including:

1. Pathogen invasion: mainly refers to harmful bacteria or parasites being brought into the fish tank, causing illness in the fish. These are mainly brought in through the following ways:

(1) Newly purchased fish or aquatic plants have not been quarantined, isolated, or disinfected, and may carry germs, becoming pathogens and causing illness in the entire tank of fish.

(2) Using the same tools as sick fish without disinfecting them can lead to cross-infection and cause healthy fish to become sick.

(3) The bait is improperly handled and contains pathogens.

(4) The tank was originally contaminated with bacteria and was not thoroughly disinfected before reuse.

2. Water quality deterioration: If the water in the fish tank is not changed for a long time, or the amount of water changed is insufficient, organic matter will accumulate, causing pathogenic bacteria to multiply and leading to fish diseases.

3. Environmental discomfort: The water temperature and water quality are not suitable for the survival of certain fish, or there are drastic changes, which cause the fish's body resistance to decrease, allowing pathogens to take advantage of the situation. This situation often occurs when new fish are purchased, water is changed, and seasons change.

4. Improper operation: mainly refers to direct operation on the fish body, such as catching, turning over the tank, squeezing eggs, etc., due to unskilled or careless movements, the fish may be frightened or jump out, causing abrasions, scales falling off, etc., which may cause wound infection.

5. Malnutrition: Long-term lack of one or more substances in fish feed will not only cause deformities, but also cause metabolic disorders and affect the immune system.

How to prevent some fish diseases

Once a fish is sick, it is not only difficult to cure, but some fish diseases will quickly take the fish's life; some diseases, even if cured, will affect its appearance and make it lose its ornamental value. There are mainly the following measures to prevent fish diseases.

1. Quarantine and isolation of new fish: It is best not to put newly purchased fish directly into the tank. Put it in an isolation tank first, observe and feed it for a period of time, and put it back into the tank if there is no abnormality. If there is no condition, the new fish can be soaked in salt water with a salinity of 3 or 0.1% potassium permanganate solution for 10 minutes. Pay attention to observation during soaking. If the fish swims fast or floats, take it out immediately and put it back into the water.

2. Ensure the quality of feeding: arrange appropriate bait according to the age, food intake, season, climate and other conditions of the fish, feed them at regular intervals and in fixed quantities, and regularly supplement them with high-quality bait containing multiple vitamins to prevent malnutrition.

3. Pay attention to water quality: Understand the water quality requirements of the fish you raise, adjust the water temperature and water quality to within the appropriate range to prevent the fish from acclimatizing. Do not use untreated water, check the water quality regularly, and keep the water fresh.

4. Maintain a stable environment: Pay attention to changes in water temperature and prevent it from fluctuating greatly. Pay special attention to the water temperature of the fish tank when the weather changes. When changing water, pay attention to whether the temperature of the new water is too different from that of the original water. If the difference is too large, it should be adjusted in time.

5. Careful operation: The operation of the fish should be gentle and steady, not careless and impatient. When catching fish, the net should be set accurately and scooped out quickly. Do not chase and hit the fish relentlessly, which will make the fish nervous and tired. For fish that are easily frightened and jump, cover them with your hands after catching them, and then move them. Do not suck up the fish when changing the water, and do not let the water flow directly onto the fish when adding water. Be gentle when squeezing eggs, and disinfect them in time after squeezing eggs.

6. Avoid cross infection: Keep your hands clean when operating the fish tank. Do not use tools used in sick fish tanks in healthy fish tanks without disinfection. Disinfection can be done by soaking in boiling water or 1% potassium permanganate solution for 5 minutes. It is best to have a separate set of tools and do not mix them.

7. Bait processing: Fresh baits such as fish and insects must be kept fresh and thoroughly cleaned before use: it is best to freeze them to kill most germs and parasites. Dry feeds must be stored as required to prevent deterioration.

8. Regular disinfection: Fish-keeping equipment should be disinfected regularly, which can be done by sun exposure, boiling water, and drug disinfection. Aquariums should also be disinfected regularly, but even if the disinfection work is done carefully, some pathogens will inevitably enter the tank, so some disease prevention drugs should be added regularly to prevent the outbreak of fish diseases.

3. Fish farming knowledge: There are several reasons for lack of oxygen in freshwater fish ponds.

1. As the temperature increases, the solubility of oxygen in water decreases;

2. As the temperature rises and the pressure decreases, its solubility also decreases;

3. As the temperature rises, aerobic microorganisms multiply and consume a lot of oxygen;

4. As the fish's own activities increase, the oxygen consumption increases and the required oxygen also increases.

4. Ask for some knowledge about fish farming

You said that you use buckets to raise fish. I have also used ordinary large buckets to raise koi. Let me tell you about my own experience for your reference:

Fish: 5 small koi (about 10cm in length)

Container: Two buckets 50cm high and 40cm in diameter (with some small stones at the bottom of the buckets).

Equipment: a low-power air pump (with a leather hose and water goblin), two net bags, one large and one small, for catching fish when changing buckets.

The process is as follows: two buckets are filled with water, one with fish, and the other is placed in a ventilated and lighted place to remove bleach and other substances in the water. Generally, the bucket is changed every 3 days, and the other bucket is immediately filled with water for standby use after cleaning, and the cycle continues. During this period, oxygen is added flexibly every day, depending on the weather conditions: in autumn and winter when the temperature is low, oxygen is added for about 5 hours a day; in spring and summer when the temperature is high, oxygen is added all day. Water fairies are also cleaned frequently.

The feed I feed is the same as the one the fish store owner feeds his own koi. It costs 8 yuan per pound. I bought a large bag of one pound. My five small fish have not finished eating it for more than half a year, because during this period I also buy live bloodworms to add nutrition to them. I feed them once in the morning and once in the evening, and the amount is controlled so that each fish can eat about 5 grains each time, and it is better to have no feed residue. If there is any residue, use a small mesh net bag to fish it out as soon as possible. And I don’t feed the feed dry. I soak it in a little water for about 1 minute before feeding it. This way, the fish will not have difficulty eating it, and it will not be hurt by the swelling of water after eating it.

Results: I kept them for more than a year, almost two years, and each fish grew a size larger, with bright colors, and was agile and strong! Later, I was reluctant to release them because I had to go to another city for work.

We can analyze the reasons why your fish always hang

First of all, water. If the water for fish farming is tap water, it must be placed in a sunny place for a few days. At least 3 days, at most 5 days or more. It is best to place the water in the same place as the fish farming environment, so that the water temperature is consistent and changing the water will not irritate the fish. But it is best to place it in a ventilated place so that the dissolved oxygen content in the water is high.

Is there a problem with your water?

The second thing is the stocking density. According to the original poster's description, the size of the koi should be less than 10 cm, which is not too small even if you use a large bucket. I don't know how high the water level is and whether you add oxygen. If not, it is very likely that the fish will die for this reason.

Another reason is that the fish was sick before you bought it. The fish waiting to be sold in the flower and bird shop have been caught and transported before, which can easily cause damage to them, reduce their immunity and cause them to contract fish diseases. Of course, some of these can be seen, and some are internal symptoms that cannot be understood. If this is the case, then you should not do unnecessary treatment, it will be too late. Next time you buy fish, you should learn from experience. If the fish has external injuries on the body surface, scales falling off, rotten gills, white lumps on the wounds or fins, and swimming is not flexible, it is best not to buy it. This kind of fish is not only difficult to raise, but it is also very likely to spread germs to other healthy fish.

I recommend two types of feed. One is a granular formula feed specially made for koi. The same kind that the owner of a fish shop that sells koi feeds his own fish is fine. You can buy a few dollars a pound of it and use it as the staple food of the fish. The other is "side dishes". The better ones are bloodworms for fishing. You have to buy them specially and they won't last long after you buy them. You have to eat them up in a few meals. In addition, summer is here and there are more insects. If you kill mosquitoes or termites, you can throw them to the fish to supplement them. They also like to eat the insects in vegetables and corn, and they are nutritious. I often feed them these things. The starch feed you mentioned is the colorful and bright one? That is not nutritious. I suggest you change it.

The amount of feed you feed depends on the size of the fish. It is usually fixed once in the morning and once in the evening. The amount should be controlled so that each fish can eat about 80% full each time, and it is best if there is no feed residue.

This is my personal experience. Koi are relatively easy to raise. I hope my experience and analysis will be helpful to you.