More profitable and easy maintenance procedures result in getting the popularity of Vietnam koi fish farming among fish farming business persons. Over the past fifteen years, Bangladeshi aquaculture practices have undergone a revolution and bestowing the nation to the fourth position globally in the farming of freshwater fish.
Consequently, for the last several years, koi fish, one of the fastest fish species, first Thai koi, and subsequently ‘all-female koi, have shared center stage. But thing is, from three years ago it was Vietnamese koi that took the cape of most exciting koi breed, with the hope of the highest profits for professional fish raiser.
Vietnamese koi is a native fish species in Vietnam. Vietnam koi fish farming is increasing at an increasing rate in south-Asian countries. Its outside physical structure is almost similar to native climbing perch (koi) as of India, but two black spots found, one in the operculum and another is in the caudal peduncle which is not found in the indigent koi fish species.
It has great potential to develop our fishery sector due to its higher growth rate of Vietnamese koi fish species. It reached up to 200-250 g only within 4 months of culture. Now a day’s the demand for this species is increasing day by day among the fish growers of West Bengal (India), Bangladesh, Sri Lanka, Pakistan, and Myanmar due to higher market prices.
To get the better of this condition, other fast growing climbing perch known as Thai koi and Vietnamese koi strain has been introduced from Thailand and Vietnam in 2002 and 2010, respectively. The picture is collected from IndiaMART.
Here we will discuss about how to start Vietnam koi farming business commercially.
Advantages of Vietnam Koi Fish
Unlike carp fishes, Vietnam koi breeds do not grow slowly, it becomes marketable within 3-3.5 months like tilapia fish. As a commercial fish raiser, any can choose it to cultivate. It doesn’t require much take care which much necessary for Rui fish farming or grass carp fish farming. It doesn’t require much investment as you need to start livestock farming like cattle farming or pig farming.
Like catfish farming, anyone can run the Vietnam koi fish farming business successfully without any training. Vietnamese koi fish raiser doesn’t require an adequate place or site to dig an earthen pond. You can raise this fresh-water fish species in plastic tanks, cages, or concrete tanks, even using biofloc fish farming system.
Here we are describing 10 easy steps to start the Vietnam koi fish farming business commercially. Though you have learned that it does not require much knowledge, as a commercial fish farmer you need to make a perfect business plan. A perfect business plan is a combination of a business model, business operation model, and financial projection. A proper and perfect business plan is half the success of any kind of project.
1. Site Selection
The modern farming method doesn’t care about the place or site for the pond. Modern aquaculture system shows us different technics of fish farming, such as biofloc technology, Recirculating aquaculture systems (RAS), etc. If you have enough site then dig an earthen pond maintain all parameters of earthen pond construction.
Besides pond construction, you must think over dike design and construction perfectly. Appropriate earthen pond and proper dike are more helpful for more fish farming efficiently.
2. Period Of Spawning
Mid-February to July is the perfect time for hastening Vietnam koi. First, you need to select mother fish for injection to make them suitable for breeding. After injection, you have to shift both the males and females (about 100 fish) to the breeding tank (1oft / 8ft) at 1:1 ratio which is provided with artificial aeration. The spawners need to remove from the breeding tank after 7-8 hours when breeding activity was over.
Fishes release eggs within 3 hours of injecting. All eggs will not release at a time. The spawners need to remove from the spawning tank after 7-8 hours when breeding activity is over. The eggs of Vietnam koi float on the surface of the water in the pond. Impregnation periods are mostly about 10 hours. The Impregnation and hatching rate depends on a parent’s fitness. Fecundity rate about 20-30 thousand. After 18 hours enormous numbers of eggs will be fertilized.
Finally, within 72 hours yolk sacs will be absorbed. Then 2 boiled egg yolks of duck have to serve for first feeding. Boiled egg yolk (blended) mix with cyclop- EEZE and spreader out the breeding tank. Give first feeding in the morning (9.30 am to 10:30 am) and afternoon (4 pm to 5 pm). Feed must be maintained about four times before transferred to the nursery pond for nursing.
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4. Stocking Fry In Nursery Pond
Nursing can be done in two different ponds. After drying, liming, and fencing you have watering in the pond. The water would be up to 3 ft. depth and 100 g flour/decimal are mixed with pond water. This flour helps in the growth of a lot of zooplankton in water which is very essential for fry as natural feed. The water height of the nursing pond will be 2- 2.5 ft. After 7 days of hatching in a tank or pond, you should better stop egg feeding, rather provide flour mixed feed, though you then also use nursery feed (floating powder).
Then release the smallest Vietnamese koi fry into the nursery pond from the breeding tank 3-4 days later from spawning. Fry stocked at 10000/decimal is generally accepted. You have to feed 3 times/ day (morning, noon, and evening). Provide as feed flour and egg yolk first 5 days. After 2-3 days, you can feed them as flour and nursery feed (3kg feed/ 1kg seed). Nursing 20- 22 days when fry become 5000 fry/ kg (each fry 0.2 gm). The picture is taken from tradeindia.com.
5. Stocking Of Fingerlings In Rearing Pond
After 20- 22 days of nursing fingerling release into the rearing pond. Stocking density is 1500 – 2000/ decimal. The earthen pond is better for rearing Vietnam koi fingerlings. The perfect size of the rearing earthen pond is 50-60 decimal. The ideal depth of the rearing earthen pond is 3-6 feet.
6. Feeding In Culture Pond
Feed the stocked fish with the prepared feed twice a day at the rate of 5% body weight. About 2/3 of the total feed provide in the morning (9.00 am to 10.00 am.) and the rest of the ration in the afternoon (16.00 to 17.00 pm). And finally, apply pellet feed before marketing. You need to monitor the growth rate of the fingerlings 10mg/month is perfect you think.
7. Stocking Of Fish Fry In Culture Pond
The rearing stage is generally accomplished in 31-60 days. After that fish fry release into the culture pond. The size of the culture pond is 50-60 decimal. In this situation, you should supply artificial feed at the rate of 5-7% of the total body weight daily.
Proper water treatment and management are needed for the commercial Vietnam koi fish farming business. It includes different activities like liming fertilizing, pulling hura (traditional water treatment) to remove toxic gases from the bottom of the earthen pond. Agitation of water is another necessary thing to control water quality. You can do it both traditional or modern way. The traditional water treatment process is used in comparatively poor countries.
Liming, fertilizing and pulling horra and agitation of water need to accomplish when it is needed according to the existing situations of the farming ponds. In the case of excessive planktonic growth or bloom that might cause water quality deterioration, you have to exchange water to maintain the quality parameters within a suitable level.
If there is excessive gas and the water become foul-smelling due to using excessive food and fertilizer (especially rough food) then a medicine named zeolite or lime mixing with water is recommended to use after every 15 days.
Follow all the mentioned steps to get better koi fish and they will be suitable for collecting and marketing within 3-4 months. While collecting for sale each fish weight will be about 70-80 grams. For selling purposes, you should collect fishes at dawn. Better to complete harvesting by seine net. For Vietnam koi fish, harvesting must be accomplished at late-night.
Within 100-120 days, marketing can be done. As a commercial Vietnam koi fish farming, you should flow marketing strategies like marketing demand analysis, pricing analysis, and cost-benefit analysis of transportation between the local market and remote (highly demanded market). So, if you maintain all conditions for the Vietnam koi fish farming business then it will be better for you.
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