The key point is also basic, that is, the bottom of the pond is good, the water quality is moderate, the water quality is good, the water temperature is balanced, the common equipment is complete, and the fish feed is balanced in nutrition.
Siniperca chuatsi mainly eats some fish and shrimp, so it is necessary to provide bait fish to feed.
What conditions do you need to raise mandarin fish?
1, the bottom of the pool is better.
Ponds for raising osmanthus fish require good bottom material, and ponds with good bottom material have better water quality, so the general culture is relatively smooth.
It is required that the silt at the bottom of the pond should be about 10 cm, and the silt should not be too deep. In addition, sandy loam is good and has strong water purification ability, which is suitable for low-yield fish ponds, such as below 3000 kg/mu, and has strong adsorption, which is suitable for high-yield fish ponds, such as above 4000 kg/mu.
2. The water quality of the pond is kept in a moderately fat state.
The pond with osmanthus fish is of medium water quality.
The growth rate of poor water quality is slow and diseases are frequent.
Overfertilized water is rich in organic matter and oxygen consumption factors, and the water quality is easy to deteriorate.
The water body with medium fertility has high plankton content, high oxygen production by photosynthesis and rich dissolved oxygen; When there are many microorganisms, the beneficial bacteria are often dominant, which inhibits the reproduction of diseased microorganisms, so there is little disease.
3, equipped with irrigation and drainage, fan, oxygen equipment.
Osmanthus fragrans is a kind of benthic fish with high oxygen consumption rate and weak hypoxia tolerance, so the pond for raising Osmanthus fragrans should have drainage and aeration equipment.
Roots blower can't be turned on during the day in high temperature period, and it should be turned on more in low temperature, rainy day and night; You can't turn on the impeller aerator when the pond is cloudy in high temperature and sunny days. At this time, if the aerator is not turned on, the dissolved oxygen at the bottom of the pool will be higher and the self-purification ability of the water body will be enhanced. However, when the water is green or rainy, it must bloom more. When the water quality of cultured osmanthus fish in some areas is green, the oxygenation is insufficient in rainy days. Osmanthus fragrans is in a sub-anoxic state for a long time, and there will be more reproductive diseases, which is typical in Jiangsu during the rainy season from July to August. The waterwheel is not very effective for muddy water and water depth.
4. Feed nutrition should be balanced.
In order to make osmanthus fish eat balanced nutrition, we should feed a variety of feed fish.
Before feeding feed fish, feed fish must be disinfected and killed by drug immersion bath to prevent pathogens from being brought in by feed fish and cut off the transmission route of pathogens.
In the process of osmanthus fish culture, we should pay attention to the change of water quality and take more targeted preventive measures.
5. Good water quality and balanced temperature.
Guiyu pond requires good water balance temperature and proper water quality adjustment.
The high temperature season from June to September is the time to increase the amount of foraging. Water should be injected and drained once a week, and the amount of water changed each time is about 0.5 meters, so as to keep the transparency of the pool water above 40 cm.
What food does mandarin fish eat?
1, osmanthus fragrans is a typical fierce carnivorous fish, and it has a strong ability to distinguish bait. It mainly feeds on live fish and shrimp all its life, even the newly opened fry have to eat the seedlings of other fish.
When I grow up, I eat not only live fish, but also shrimp and tadpoles.
2. Under the condition of artificial culture, the dynamic fish or fish-shaped compound feed under the action of water flow can also induce its feeding reaction. In the case of food shortage, they can also eat a small amount after artificial domestication.
Don't eat bait fish that have been dead for a long time, whether they are young fish, fingerlings or adults. Even if they are ingested, they will spit it out immediately.
3. Its feeding mode is to actively chase the edible fish in the fry stage, bite the tail first and then swallow it slowly; At the stage of big fish species and adult fish, it is an ambush attack.
Always hide in the water, stare when you find something delicious, and adjust your position and posture at any time. When the prey approaches, you will suddenly attack, bite it and swallow it. As long as the body height of edible fish is less than the height of the mouth crack of mandarin fish, it can generally be swallowed.
Guiyu feed
(1) Early bait fish:100-200,000,000 fry (fish flower) such as silver carp, bighead carp, snapper, bighead carp, crucian carp, etc. In the pond, osmanthus fragrans were stocked in advance as early bait.
Feed roughage such as peanut bran and wheat bran, and cultivate for 15-20 days. When the bait fish grows to 1.5-2.5 cm long, it is disinfected with 0.7ppm copper sulfate and 0.5ppm concentrated chlorine, and then it is cultured in 2-3 cm.
(2) Medium-term bait fish: 200,000-300,000 fry, such as shad, wheat carp and Thai shad. , each mu is mixed in four big fish ponds, and fry such as silver carp, bighead carp and crucian carp can also be cultured in special ponds as bait fish for large osmanthus fish.
(3) Later bait fish: Besides self-production, it can also be purchased.
In the late stage of culture, it generally enters winter, and the bait fish of shad is easy to freeze to death. A sufficient number of cold species of bait fish, such as silver carp, bighead carp and crucian carp, should be cultivated for wintering as backup bait fish for osmanthus fish in winter and spring.