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The Most Complete Technical Information on Fish Farming in the North

Northern fruit fish is a freshwater fish with large weight, delicious meat, and is popular in the market. If applied correctly technique of fish farming in the NorthAfter only 4-6 months, farmers can harvest, giving economic efficiency many times higher than other farming models.

Environment for fish farming in the North

For the old pond that used to raise other aquatic products, people need to do some renovation before releasing the fish. How to renovate:

Dredging the mud bottom 15-20cm . thick

Cleaning, weeding around the bank, re-filling the pond bank, checking if there are holes or not.

Apply lime to the bottom of the pond to improve, apply 7-10kg of lime/100m2. After fertilizing, let the bottom dry for 2-3 days, then provide water.

Apply fertilizers to color the water. Use 5-10kg of manure + 3-4kg of NPK fertilizer for 1000m2 of pond.

Newly dug ponds also need to be rehabilitated before stocking fish.

After digging, it should be soaked in water and drained – water supply 2-3 times to wash alum.

Apply lime to improve the new pond. If the pH is above 4.5, apply 7 – 10kh lime powder / 10m2, if the pH is below 4.5, apply 10 -15kg lime/100m2. Dry the pond bottom for 2-3 days, then add water to the pond.

Fertilizing causes water color: Use 10-15kg of manure + 4-6kg of NPK fertilizer for 1000m2 of pond.

Farmers can apply fish farming in the pond

  • Cultivated in a cement tank

In addition to earthen ponds, the model of raising fish and fruits in cement tanks is also applied by many farmers to overcome disadvantages such as: area, convenience in care, management, water change, disease prevention and collection. plan. The culture time in the cement tank is shortened, the fish grow quickly, grow well, the quality of the fish is frozen, so the price is stable, the capital is quickly recovered.

People can build semi-floating and semi-submersible tanks to reduce costs.

Area: 40 – 60m2 square or rectangular.

The brick wall is built with a height of 0.8 – 1m, in which the word should be 0.5m high, covered with smooth cement so that the fish can’t jump and don’t scratch the fish.

Surround the wall with nets or stakes.

The bottom is smooth with cement, inclined 3 – 5 degrees for easy water change.

Fish farming in cement tanks is currently popularly applied by farmers
Fish farming in cement tanks is currently popularly applied by farmers

In addition, farmers can also apply the model of raising banana fish in the basket, each stage is about 10-30m2 wide, 1.5-2.5m deep. The rafter is made firmly, using a net or rope, choose a 3.6-mm mesh thread, the outer mesh hole size is 2.5cm, so the stakes should be firmly attached to tie the rope. It is placed on the pond, about 50cm from the bottom.

Advantages when raising fish and fruits in a cage: can raise fish at high density, concentrated food source should be more convenient. In addition, fish is not rubbed against the pond bottom, especially steel loss rate, less disease, easy management, care and harvesting.

Select and release fingerlings

Season 1: stocking in April – May of the lunar calendar, collecting in August – September of the lunar calendar. This is the most suitable season.

Season 2: stocking in August – September, harvesting in December to January next year.

Season 3: Stocking in January to July. However, at this time, the fish will grow slowly.

Choose fish of uniform size, the weight is about 200g/fish, the body length is 8-10cm, the fish will grow quickly. Or you can also choose the size of 50-100g/individual, the body length is 3-4cm.

Food source of fish

Food from nature: Zooplankton, perch, carp, carp, butterfly, catfish, eel, field crab, shrimp and shrimp, frogs, trash fish… in general, all the prey fits their mouths.

Artificial feed: How to raise fish with high yield, good meat ratio, people need to actively produce artificial feed that is bran pellets to meet the daily food needs of fish. In bran pellets, most of it is animal protein, and a small part is vegetable protein.

Fish can eat both natural and artificial food
Fish can eat both natural and artificial food

+ Animal protein: trash fish, shrimp, crab, yellow apple snail, waste from slaughterhouses…

+ Plant proteins: rice flour, corn flour, broken rice bran, legumes, potatoes, cassava, and fruits of all kinds.

In order for fish to grow quickly, for fresh food sources such as trash fish and field crabs, people should use fish cutters or shellfish crushers to make food smaller.

The way to self-produce fish bran pellets is to use a multi-function chopper to crush all the ingredients, mix them together in an appropriate ratio to press them into bran pellets.

Disease prevention and treatment for fish in the North

Signs: Swim sluggishly on the surface of the water, there are bleeding spots on the body, the fish’s belly is enlarged, they don’t eat or don’t eat, the anus and caudal fin are torn.

Fix: Use Oxytetracycline: 2g + Vitamin C 3g/100kg fish. Mix the medicine into the food, feed it for 5-7 days.

  • White skin disease (loss of viscosity)

Signs: The disease appears when the fish body is scratched. Signs of anorexia, dorsal fin cavity appear white, spread quickly. Severe disease, deep sores, can die.

Fix: Bathe the fish before stocking.

Treat with Cyprocan 4g/kg feed, feed twice a day for 5 days

  • Tail fin rot disease

Signs: Pelvic fins, caudal fins infected by biting or transporting or catching.

Remedy: You can use 1g/m3 potassium permanganate solution to bathe the fish.

Use antibiotic Pantacin 200 with the amount of 3mg/kg mixed with food, fed for 5-7 consecutive days.

Signs: Caused by a parasite that causes the fish’s body to have white spots

Remedy: Use potassium permanganate concentration of 1g/m3 to spray into the tank. Use antibiotic Gencin 100g/15kg mixed with food, feed for 5 consecutive days.

Fish are very susceptible to skin diseases, so they need to be checked periodically to have a timely treatment plan
Fish are very susceptible to skin diseases, so they need to be checked periodically to have a timely treatment plan

With the information about the technique of fish farming in the North that we share with people. Surely you have updated yourself with useful information, right? Wish you success with your fish farming model.

Emilia Chaney
Emilia Chaney
My name is Emilia Chaney. I'm a social girl from Romania with a big smile and 3 passions: Agriculture, Travel and Social Media. I try to make this blog practical, full of great advice and inspiring ideas.

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