Fish Nursery Pond Management
About Nursery Pond
The spawning is produced in the hatchery and is reared within 72-96 hours called hatching. Fish carp
Hatching is very delicate. Be very careful when handling. It is only for 3-4 days. they
It is stocked in a well-prepared pond. They are raised in nursery ponds.
The nursery pond is a small water body of 0.02-0.10 ha and a depth of 1.0-1.5m. that much
From hatchery to hatchery for 15 to 20 years, hatching is released properly
Work. During this period, it grows up to 25 to 30 mm in size.
This fry is grown for another 2-3 months in another pond
The size is about 100mm.
1. Site Selection
Why and where to choose an area for a nursery school
o Better use of land and water.
o Regular sources of income (self-employment) and profit generation.
o Food security and nutrition are guaranteed.
o For a better living
o The appropriate time, effort and skills, knowledge, training, practice and monitoring
It was necessary to raise the tempura.
o Choose a place with a gentle slope so that you don’t need too much excavation.
o Easier drainage even on slopes
o If the ground is too low, there is a risk of flooding.
o Do not build ponds on land with good agricultural products.
o Build a pond near your home for care and maintenance.
o Choose an area without trees/plants so that proper wind flows and water becomes oxygen.
o Places should be secured with good waterways such as rivers, rivers, and sluice dams.
o Mud baths are not permitted in ponds.
o Good soil holding capacity is essential. Not sand and gravel containing place
Recommended for good culture. Clay soil is good.
2: Check soil water retention capacity
Take a small amount of dirt from the surface and squeeze it into a ball. Throw
Drag the ball of soil into the air. Bad soil with too much sand or gravel
The ball falls without sticking to each other. If the balls stick together
Of course, the soil is good, but not sure.
Now do a second test to make sure the soil is good. Dig a hole deep
waist. Fill with water early in the morning. Fill on top. to
In the evening, the water settled into the soil. Then fill the hole
Water again. Fill on top. Cover the hole with a board or leafy branches.
The next morning, if most of the water is still in the hole, the soil
There is enough water to build a fish pond.
3. physio Chemical Properties
A good farm should have a good physicochemical environment. Wide fluctuations
Water levels cause death. A proper temperature of 25 to 30 degrees is essential.
High turbidity due to suspended slit or abundant growth of phytoplankton
Harmful to the nursery tank. The basic conditions necessary for the care of a nursery are:
In general, nurseries containing alkaline water and adequate levels of phosphate and nitrate
Satisfactory growth and survival of fry.
Water quality parameter display
Watercolor turbid brown, dark green, red
Dissolved O2> 5-10 ppm
Free CO2 mineral- <12 ppm
Total alkalinity 50-280 m
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You can also read: Stocking and post stocking management