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How to Raise Koi and Black Carp Together? Practical Experience Shared
In order to fully tap the production potential of the water body, adult fish farming mostly adopts polyculture, dense stocking and rotational culture. If carp is polycultured in the same pond with black carp, because feed is easy to obtain, it grows both fast and well. The commonly used ratio is for every 1 kg of black carp fingerlings stocked, stock 2~4 carp with a total length of about 13 cm
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Experience and Technical Key Points for Raising Yellow Catfish in Paddy Fields
1. Paddy field selection. It requires convenient water intake and drainage, sufficient water source, good water quality, and strong water retention. The area is generally 8-10 mu per plot. 2. Field engineering. Dig "tian"-shaped or "jing"-shaped ditches, with a ditch width of 3-5 m and a depth of 0.8-1 m, build water intake and drainage canals well, seal the water intake and drainage outlets with fine-mesh nets,
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Experience in artificial domestication and feeding of yellow catfish in aquaculture
The yellow catfish is a carnivorous fish, previously surviving mainly as a wild trash fish in ponds and lakes, feeding on small fish and shrimp, insects, and the larvae of various aquatic insects (especially mayflies and chironomid larvae), mysid shrimp, small mollusks, and other aquatic invertebrates
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Experience in Rearing Yellow Catfish Fingerlings in Ponds
Based on the characteristics at this stage, such as the increased size of yellow catfish fry, feeding habits basically similar to those of adult fish, stronger schooling behavior, increased food intake, and stronger adaptability to the ecological environment, and given that water temperatures are generally high during the rearing process, it is necessary to take into account the characteristics of yellow catfish and grasp
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Sharing Experience in Micro-Cage Culture of Yellow Catfish
Setting up micro-cages in ponds used for culturing other aquatic products to raise yellow catfish requires little investment, yields quick results, and is easy to operate. Cage setup. The cage is sewn from polyethylene netting, 2 m long, 2 m wide, and 1.2 m high, with a mesh size of 1 cm. The cage uses a closed stretcher floating-fixed type, with a 9-mesh net cloth as a cushion layer at the bottom; the cushion layer edge is 20 cm high to reduce feed loss, and the upper part of the cage rises about 30 cm above the water surface. A square plastic basket made of 18-mesh polyethylene window screen, 10 cm high and 30 cm on each side, is used as a feeding platform and placed in the middle of the cage body, one per cage. The cages are set at the water inlet of the fish pond, and 1-3 cages can be placed per mu of fish pond. The cages can also be set in open waters with fresh water quality, sufficient dissolved oxygen, shelter from wind and sun, and no pollution, arranged in a straight line, with a cage spacing of 4 m and a row spacing of about 10 m. Water hyacinth or alligator weed is transplanted inside the cage to cover about 2/3 of the cage area.</p><p></p><p>Fingerling stocking. The cages are put into the water 1-2 weeks before fingerling stocking. The fingerlings are required to be disease-free and injury-free, robust, and uniform in size. Stock 100-150 large-size fingerlings weighing about 20 g each per square meter.</p><p>Feeding management.</p><p>① Feeding: Common feeds include small miscellaneous fish, snail and clam meat, earthworms, silkworm pupae, livestock and poultry viscera, and animal blood, etc. Feed according to the principles of fixed time, fixed location, fixed quality, and fixed quantity to ensure the yellow catfish eat enough and eat well and grow quickly.</p><p>② Water management: Keep the water quality fresh and the dissolved oxygen sufficient. Observe the fish activity every day, check whether the cage is damaged, remove sick and dead fish from the cage, and keep the water body inside the cage clean. Clean the cage once a week to ensure normal exchange of water inside and outside the cage, and adjust the height of the cage in time when the water level changes.</p><p>Disease prevention and control. Soak the cage in bleaching powder solution for 30 minutes before it enters the water; soak the fish body in salt solution before the fingerlings enter the cage to kill pathogens and parasites on the body surface; splash quicklime water over the whole cage for disinfection once every 10-15 days; regularly hang bags of copper sulfate and ferrous sulfate mixture; about every 20 days, make medicated bait with antibiotics and feed continuously for 2-3 days. Through the above measures, fish diseases can be prevented during the culture cycle.</p>
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Practical Experience Sharing on Temporary Rearing of Yellow Catfish Fry
The temporary rearing and cultivation stage of yellow catfish fry refers to the brief process in which newly hatched larvae that cannot swim freely are cultivated with careful nursing methods into individuals that can swim and feed on their own. The temporary rearing and cultivation of fry is also called larval-stage temporary rearing. (1) Facility conditions The fry's
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Experience and Techniques for Polyculture of River Crabs and Bass in Summer
This polyculture model of river crabs and bass fully utilizes the water body space, forming a composite ecosystem where fish and crabs coexist in a mutually beneficial relationship, reducing the disease rate, greatly improving the market quality of commercial crabs, and increasing farming income. The technical key points are summarized below:
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Experience sharing on mixed culture of river crab and bass in ponds
1 Pond clearing and preparation After the pond is exposed to the sun, use 80kg of quicklime per 1/15 hectare to clear the pond and disinfect it, killing harmful organisms and pathogenic bacteria. 7d before stocking crab seedlings, fill with water to about 0.5m, apply 60kg of chicken manure per 1/15 hectare, cultivate plankton feed, and make the water color yellow-green, with transparency
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Practical Experience and Methods for Seabass Farming
Seabass belongs to the order Perciformes and the subfamily Lateolabracinae, and is a euryhaline fish. It is distributed along the entire coast of China, with abundant resources. Seabass has the characteristics of fast growth, wide adaptability, strong disease resistance and delicious flesh. It is deeply welcomed by people. Its farming techniques are as follows: 1. Pond construction
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Experience and Technical Key Points for Pond Farming of Bass
1. Pond clearing and water cultivation. For ponds used to farm bass, it is best if conditions allow to dry the pond, remove silt and expose it to sunlight, especially for old ponds that have been farmed for many years. Disinfect once half a month before releasing fry, applying 50 kg of quicklime per mu or using 20 PPM bleaching powder with an appropriate amount of pond water for disinfection.
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