Yellowfin pompano is a popular fish that Vietnamese people pay great attention to, not only easy to raise but extremely easy to earn huge profits for people pursuing this farming model. To learn more about the fish farming process, let’s follow the following article with Agrisearch.net!
Yellowfin pompano has the English name Snubnose pompanothere are places called yellowfin pompano, snub-nosed mackerel.
OLDbasil can live in salinity from 2‰ to 45‰. Under the salinity level of 20‰, the fish grow quickly, in the high salinity condition, the growth rate of the fish is slower (Allen et al., 1970). Birdfish are often found in water with salinity at the adult stage in the range of 30 to 37‰. But at a small stage, they occur in areas with a wider range of salinity, from 9 to 5‰ (Gilbert et al., 1986).
Techniques for raising yellowfin white pompano
1. Selection of farming season
The farming time depends greatly on the market for commercial fish. The commercial farming of yellowfin whitefish in brackish lagoon ponds should only last from 8-10 months because it will be very convenient for management and care. Therefore, the best stocking season is from March to April of the solar calendar.
– Choose a breeding location
It is necessary to choose a place with convenient terrain, the tidal range of 2 – 3 m. Soil: common clay or sandy clay (holding pond water) to keep water. Requirements for technical indicators of some of the most suitable environmental factors in ponds: Temperature 26-32 (oC), Salinity 10 – 20‰, Dissolved oxygen 5-7 mg/l, NH3 < 0.9 mg/l, water pH 7.5 – 8.5.
2. Pond renovation
– For old ponds:
Like the other ponds, the pond is used to raise the yellowfin whitefish after draining, repairing the pond banks, drains and sucking out all the bottom mud. Then proceed to apply lime 10-15kg/100m2 pond
– For new ponds:
After newly built pond, it needs to be soured 2-3 times, then based on the pH of the soil to apply lime to improve with the amount of 10-20kg/100m2 pond.
3. Get water
The water taken in is carefully filtered through a thick net, after the water level in the pond reaches 1-1.2 m, then proceed to cause water coloration by composting with a dose of 10 – 20kg/100m.2. After 5-7 days, the water color in the pond is green, then stocking is carried out.
– Density: depending on the specific conditions of each pond, the consumption market, the investment ability, the technical level of the householder, the appropriate density is determined, usually from 0.5 to 1, 0 fish/m2 pond
– The size of fish put into commercial farming is from 10 to 20g/fish so that it can be harvested after 8-10 months of rearing.
– It is necessary to choose healthy breeds, without diseases, deformities or deformities, swimming in groups in the water. Before stocking fish, it is necessary to tame the salinity so that the difference between the water salinity in the fish transport bag and the culture pond is not more than 5‰.
– Release time: Drop in early morning or evening
Stocking technique: Release in the early wind, before releasing the seed bags into the pond within 5-10 minutes for the fish to gradually adapt to the water environment. Next, people open the bag to release the fingerlings slowly.
5. Water quality management
Regularly check culture environment factors (depth, salinity, temperature, dissolved oxygen) and fish health status. Note to change the water for the pond according to the tidal regime or get water from the reservoir.
Make sure the pond water level is always >1.2m. Change the water at least 2 times a week from 20 to 50% of the pond water volume, depending on the water quality in the pond
Note that twice a month should be used biological products to improve the pond environment.
6. Feed management
Feed is currently a big problem that marine fish farming is currently facing. With this yellowfin white pompano, although there is no specialized food, it is possible to use homemade food or industrial food for other marine fish such as Cobia, Sea bass to feed. With protein content >45%.
The number of feeding times 2 times/day at 8 o’clock and 17 o’clock sessions should only be given when the fish swim near the surface of the water.
Prevention and treatment of common diseases
Fish often get wheelworm disease and melon infection when the water temperature is from 23 to 26 .oC. For the northern environment, from December to March next year, fish often get sick. If the fish is sick, people will see that the fish often stop eating, swimming apart from the school without orientation. Leads to fish with sores on the body after 2-3 days of illness. People should pay attention to always keep the pond water clean, bathe the fish with 20 ppm (20 ml/m) of formaline monthly.
While many other types of fish have to reach a weight of 1 kg to have good meat and sell at a good price, the yellowfin pompano only needs to weigh over 3 pounds to be able to sell, the meat quality is still guaranteed.
When fish weighing from 0.8 – 1kg are harvested, they can be harvested or harvested at the same time depending on the needs of the market. Note that 1 day before harvesting, people are not allowed to feed the fish. It is possible to use nets to catch more than 95% of the fish in the pond. Then drain the water to dry the pond and harvest what is left in the pond.
Because this is a highly active species in the high oxygen range, fish should not be harvested when the sun is not up (before 8 am) or it is cloudy. We can all transport live yellowfin pompano to the place of sale using plastic containers with a water volume of 1 – 1.5 m3 with a transport density of 50 kg/m3 fish can be transported in 7-8 hours.