2. Plant feed: The most ideal feed in koi fish is animal feed. However, in the absence of animal feed for various reasons, plant feed can be used as emergency or life-sustaining auxiliary feed, and common ones are turnips and aquatic plants.
3. Synthetic feed: koi fish synthetic feed is artificially prepared according to the growth demand of koi fish, with complete nutrients to meet the growth and development needs of koi fish. The main ingredients include protein, sugar, fat, inorganic salts and vitamins.
How to raise koi fish?
Shopping methods in koi fish
1. Health: No matter what kind of fish you buy, you should choose one that is flexible in swimming, active in eating, well-balanced and firm in posture, with wide shoulders and thick mouth and firm tail handle. If nothing else, as long as you are healthy, the process of raising will definitely reduce the trouble of disease.
2. Body color: Whether koi fish has excellent genes is the most direct embodiment, while koi fish's body color only requires thick and bright colors, pure and warm white, bright scarlet as blood, and thick and persistent ink.
3. Patterns: Different varieties of patterns in koi fish are clearly emphasized, such as scarlet can not be lower than nose or eyes, Dazheng ink can not be on the head, and Showa must have a face cut.
4. Body shape: koi fish's body shape should be smooth, and only a good body shape can have a good swimming posture. Generally speaking, first look at the head, then look at the performance of koi fish fishtail, and finally look at the overall performance of koi fish.
How to raise koi fish?
Feeding methods in koi fish
1. Weight gain: Feed water above 30 degrees no more than twice a day. Water bodies should be prevented from rising due to direct sunlight. The water temperature is 20 ~ 30 degrees, 2 ~ 4 times a day, and it is not recommended to use weight-increasing materials below 20 degrees.
2. Populus davidiana: Feed it no more than twice a day when the water temperature is above 30 degrees. The water body should prevent the water temperature from rising due to direct sunlight. The water temperature is 20 ~ 30 degrees 2 ~ 4 times a day, and Populus davidiana is not recommended below 20 degrees.
3. Culture: Young fish with water temperature above 30 degrees shall not exceed 4 times a day, and adult fish shall not exceed 2 times a day. The water body should prevent the water temperature from rising due to direct sunlight. The water temperature is 20-30 degrees 2-4 times a day, 65,438+05-20 degrees 65,438+0-2 times a day.
4. Germ: When the water temperature is above 30 degrees, the juvenile fish should not exceed 4 times a day and the adult fish should not exceed 2 times a day. The water body should prevent the water temperature from rising due to direct sunlight. The water temperature is 20-30 degrees 2-4 times a day, 15-20 degrees a day 1-2 times.
5. staple food: when the water temperature is above 30 degrees, the juvenile fish should not exceed 4 times a day, and the adult fish should not exceed 2 times a day. The water body should prevent the water temperature from rising due to direct sunlight. The water temperature is 20-30 degrees 2-4 times a day, 65,438+05-20 degrees 65,438+0-2 times a day.
How to raise koi fish?
How did koi fish grow up quickly?
1. Water quality management: koi fish has low requirements for water temperature and quality, and is suitable for living in a slightly alkaline and low hardness water environment. However, as the saying goes, "water must be raised before fish farming", so don't underestimate the water quality, because most diseases in koi fish are caused by poor water quality.
2. Water temperature management: The water temperature in koi fish is 2 ~ 30℃, and the most suitable water temperature is 20 ~ 25℃. In this temperature water, koi fish swims actively, has a strong appetite, is physically strong and has bright colors.
3. Feeding density: koi fish should pay attention to the density when feeding. Generally, a fish tank with a length of 60×30× 15 cm can support six koi fish with a length of 15 ~ 20 cm and eight koi fish with a length of 90×30×50 and 165438+30× 50 cm.
4. Bait feeding: koi fish is similar to goldfish in feeding, and it can be fed twice a day. In different seasons of the year, the amount of bait can be increased or decreased according to the temperature. Generally, fish and worms, pellet feed, small earthworms and other baits can be fed, but if you want to feed too much, you can usually be 80% full.
5. Prevention and treatment of fish diseases: There are several common fish diseases in koi fish, such as water mold, gill rot, enteritis, scale disease, etc. Pay attention to put the corresponding drugs to improve. Although koi fish's disease is inevitable, it is recommended to prevent koi fish's disease.
6. Four seasons management
① Spring: When the weather is warm and cold, koi fish begins to recover from hibernation, and should be moved from indoor to outdoor. However, it is necessary to pay attention to sudden cooling, timely film mulching, and keep the water temperature stable. Plant bait is the main food, and the dosage is gradually increased from less.
② Summer: The weather is hot and sultry, so it needs to be covered with plastic sunshade net to prevent direct sunlight. It is most suitable to reduce the sunlight illumination from 8000 ~ 12000 lux to 5500 ~ 5800 lux.
③ Autumn: The weather is less rainy and sunny, and the water temperature drops obviously, which is most suitable for the growth of koi fish and can increase the proportion of animal protein, such as silkworm chrysalis. Increase investment and promote rapid growth.
④ Winter: It's cold. When the temperature drops to 0℃, koi fish should be moved to indoor fish ponds for wintering. The indoor water temperature should be kept at 2 ~ 10℃ and properly fed to ensure fat and prevent diseases.
How to raise koi fish?
Disease prevention and control technology in koi fish
1, dermatomycosis in koi fish
Symptoms The fish has a layer of white hair. If not treated in time, the bacteria will invade the body and the fish will gradually weaken and die. When parasitic in gills, gill mold is formed, which often causes explosive death.
Prevention ① Wash with 1.5 ~ 2.5% salt solution, remove hair, then apply 2% mercuric chloride, and then bathe the fish with oxytetracycline. ② Use 0. 1 ~ 1% malachite green aqueous solution to smear the wound and the attachment of water mold. ③ Soak the fish in malachite green water solution of 1: 15000 for 3-5 minutes. ④ Soak the fish in 10 mg/kg potassium permanganate solution for half an hour.