Japanese carp – How to properly raise Japanese carp

Playing fish is no longer a strange hobby for Vietnamese people, one of the ornamental fish species that attracts the attention of Vietnamese people.manypeople today are Japanese carp. This fish species not only possesses a unique and impressive beauty, but it also has high economic value. However, breeding and caring for Japanese carp requires many techniques and a great deal of effort. SoHow to properly raise Japanese carpHow?

1. The value Japanese carp brings

Raising ornamental fish is an elegant hobby that many people have chosen and loved in recent years. Japanese carp, also known as Koi fish, is one of the most widely farmed fish, bringing high economic value.

Japanese carp attracts people with its outstanding, unique colors and variety of sizes, designs and special tail fins. They can become eye-catching ornamental fish, creating an impressive, luxurious and classy highlight for the space.

Besides, this fish also has great nutritional value. They are not only popular with domestic people but also become exported products to the world market, bringing high economic value.However, not everyone can successfully grow this fish breed becausehelp themTo grow and develop, farmers need to have experience and understanding as well as spend a lot of effort, time and investment costs.

In addition, it is very important to observe and detect early to treat fish diseases that may be encountered during the farming process. If you don’t knowHow to properly raise Japanese carpThe failure rate when investing in them is extremely large.

Japanese carp brings high economic value

2. How to properly raise Japanese carp

Japanese carp has an impressive beauty that can attract anyone at the first timesee, howeverBehind that are strict requirements and careful care to ensure Japanese carp can live and grow healthily. How to raisethis fishCorrect technique is not only limited to feeding and care but also includes other related factors such as renovating the aquarium, choosing parent fish, incubation period,…

Build standard fish ponds

Japanese carp ponds will have to meet standardswithThe area is about 500 – 100m2 or more, the depth of the lake must reach 1.2 to 1.5mandThe pond edge is about 0.5m higher than the tide level.

Japanese carp ponds should be located next to a water source, creating favorable conditions for changing the amount of water in the pond.In addition,The surface of the lake needs to be clear, with no bushes or shadows covered by large trees.

Before releasing fish,friendsIt is necessary to treat water sources and improve ponds using composted manure, depending on the size of the pond.pondto use the appropriate amount of fertilizer. Normally, a pond with an area of ​​about 100m2 will use 25 to 50kg of compost. In addition, you also need to regularly check the temperature, pH,… inside the tank.

Build a well-ventilated fish pond

Raise the parent fish before choosing the breed

Initially, the parent fish will be raised together in a male:female ratio of about 1:2 or 1:3. Number of fish in 100m2 lake arearanging from20 to 25 children. The mother and father fish must be purebred, healthy, without deformities, deformities or weightin approxfrom 200g to 300g. In particular, in properly raising Japanese carp, you must not use male and female fishbelongsame litter.

The food used for fish is mainly bran containing 35% to 40% protein. At the same time, you also need to pay attention to raising benthic animals and applying fertilizerperiodto create a natural food source for fish.Also, note that should onlyFeed the fish just enough or too little to avoid excess food, which is both wasteful and pollutes the water source. After releasing the fish,you need to make sure  thatThe water source is always clean, fresh,To do that, you can refer nowKOI aquarium water treatment probiotic products:EMZEO treats aquarium water, Emkoi – probiotic for koi ponds

Raising parent fish

Select spawning fish

The fish selected for breeding are parent fish that are 7 to 8 months old. Female fish should choose fish with a big belly, soft belly skin, genitals that turn pink and swollen. When you gently stroke the fish’s belly, you will see a few eggs fall out.

For male fish,if you gently stroke the bellyWhen you see white semen flowing out, the fish is healthy and growing wellPlease choose now. Bellowsto reproducewill be built of solid cement with dimensions of 2.5*5*1.2m, around the lake shore.neednettedto ensure safety. Also, water must be cleaned and poured into the tank 2 days in advanceandin the lakeequipAeration system to provide oxygen for fish and eggs.

The substrate will be water hyacinth with roots and leaves trimmed.Then you takeSoak duckweed in salt water to disinfect and remove other parasitesthenjust put duckweed in the lake. The ratio of female and male fish participating in reproduction is 2:1, on average there are about 2 female fish in 1m2. To ensure that the fry have beautiful, outstanding colors after hatching, you need to pay attention to choosing male and female fish.so that it’s really good qualitysimilar.

Especially, the parent fish are yellow brocade and white brocadeshouldWhen kept in a separate tank, the parent fish containing the 3 colors red, black and white will be mixed together. This is one of the requirements for properly raising Japanese carp that you need to keep in mind.

Select egg-laying parents

Incubate eggs

Japanese carp eggs are round, clear and stick together. The time it takes for the egg to develop will be about 8 to 42 hours. The water temperature is maintained at 26 to 31 degrees Celsius. After about 24 hours of fertilization, eggs will begin to appear 2 small black eyes. After about 48 hours, the eggs will fully hatch.

During the incubation process, water needs to flow gently and continuously aerate oxygen. Absolutely avoid sunlight shining into the fish tank. In particular, when eggs are about to hatch, a large amount of oxygen is needed. Because if there is a lack of oxygen, fish eggs will hatch very slowly. After the eggs hatch, water surface monitoring and aeration should be increased. Avoid letting fish suffer from lack of oxygen, leading to mass death and great loss.

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Conduct commercial fish farming

After the fish hatch, people can transfer the fish to the nursery tankokaymade from cement, earthen pond or tarpaulin. Fish stocking density will be about 500 to 700 fish per square meter. After about 3 to 5 days, people can feed the fish foods such as plankton and diluted soybean meal.

StayDuring the 7 to 10 day period, the fish are big and strong enough to move to a large pond. At this time,friendswas able to train the fish to eat mixed bran and flour. However, the amount of food shouldstar estimate giveappropriate, do not feed the fish too much. You can feed the fish according to the instructions on how to properly raise Japanese carp such as:

• First 10 days: feed the fish with liquid eggs or egg yolks.
• The next 10 days: feed the fish chopped worms.
• Day 20: practice feeding fish bran.
• After 1 month, you can combine snails, mussels, worms, bean residue, bran,… with synthetic food to fully supplement nutrients, promoting fast, healthy growth of fish.

The water used to raise fish must always be clear blue, with a clear surface and a gentle breeze. After each stage, the fish can be divided into other ponds about 2 to 3 times. This helps ensure fish grow faster and more evenly.From the 4th to the 6th month, you can harvest fish to sell based on their unique colors, markings, and fins.

Harvest fish when it meets standards

3. Some notes in the process of raising Japanese carp to achieve success

Japanese carp brings very high economic value to farmers. Therefore, in recent times, many people have chosen to invest in this fish farming model. The proper technique of raising Japanese carp is therefore studied very meticulously and thoroughly by everyone. Besides, you also need to keep in mind a few issues to keep in mindfollowing.

Check the original fish seed source

The initial quality of fish will directly determine the quality of fish in the future as well as the achieved farming efficiency.  Therefore, before deciding to buy fish, you need to clearly understand the origin of the fish.

You need to pay attentionYou should only choose healthy breeds. Fish must have bright colors and standard sizes for each stage. Absolutely do not choose fish with too dark colors, thin bodies, scratched scales, defects, white feces or showing fear.

Need to build fish quarantine pond

After the fish are purchased, they need to be quarantined in the lake for 6 weeks. After this period of time, if the fish is healthy, put it in the pond. Items in the quarantine pond should not be transferred to a new pond without being testedprocessantiseptic. Inwhenfarming, if the fish is sick, it is necessary to put the fish into a quarantine lake, monitor and treat. Avoid spreading to the whole school of fish.

Quarantine newly purchased fish for at least 6 weeks

Regularly pay attention to the fish and water in the aquarium

During the process of raising fish, you must regularly observe their development. For each stage of development, fish should be fed a different diet. This helps ensure adequate nutrition for fish to grow.

Also, you absolutelyDo not plant trees around or on the lake shoreandAlways keep the lake surface clear. The water in the lake always needs to be fresh and green. You can also use probiotic bacteria to clean the water in the pond. Create the best living environment for fish.

Regularly monitor fish growth

Nutritional balance for koi fish

Nutrition is an important factor in the development and growth of koi fish, directly affecting the size and color, longevity and health of the fish. The most important thing when building a nutritional diet for koi fish is that the food needs to have a protein content appropriate to the age of the fish, specifically:

• For juvenile fish in the growing stage, the best amount of protein is 35-40%.
• For adult koi fish, the optimal protein content you need to maintain is 28-32%, this is the ideal milestone for fish to have good health without excess substances and without polluting the water source.

Besides protein, carbohydrates and lipids are also important nutrients that farmers need to supplement fish to provide more energy, while also helping to promote metabolism within the koi fish’s body.

In addition, you should also choose food containing spirulina and algae rich in carotenoids so that the orange, red and yellow patches on the fish charcoal are colored more evenly and last longer. On the other hand, minerals and vitamin C are also essential to strengthen the fish’s immune system and prevent the occurrence of parasitic and fungal diseases.

However, note that you should not feed the koi fish too much, this will cause excess food to decompose in the water, thereby creating extremely toxic ammonia and nitrite. You should ideally feed a moderate amount 2-3 times a day.

So, above is all the information on how to properly raise Japanese carp that we want to send to you. Hopefully through this articlereadersThere is more useful information when raising Japanese carp. If you would like to learn more about probiotics that help clean pond water and wastewater, please get in touchMicrobial product Duc Binhright now.

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Microbial products Duc Binh – Center for research and application of biological productsspecializes in research, production and application of product lines: Probiotics, septic tank enzymes, wastewater treatment enzymes, aquatic enzymes, biological products…

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