CATDOLL : CATDOLL: Which fish are suitable for raising in rice fields?

1. Which fish are suitable for raising in rice fields?

Different regions can choose the stocking species according to different situations. In principle, all species suitable for pond farming can be farmed in rice fields, but rice fields are generally mainly carp, and some crucian carp, tilapia, etc. can also be raised. Carp can grow well in shallow water and are omnivorous. They can eat weed seeds, young roots, tender shoots, small underground stems, as well as some filamentous algae and various insects, mollusks, water earthworms, zooplankton, etc. The first-year fry can grow to 50 grams in two months and 100 grams in three months. The 50-gram fish of the previous year can grow to 250 grams in three months. Carp fry are easy to produce and easy to breed and raise, so they are ideal for rice field fish farming. Grass carp can also grow in shallow water and eat various weeds. Grass carp species are mainly raised in rice fields to provide large-sized fish species for ponds, lakes, and weirs. The first-year fry can grow to 50 grams in two months. Tilapia is not only suitable for shallow water life, but also can withstand high temperatures, is omnivorous, and can eat a lot of algae. It is more suitable for stocking in late rice fields. However, since tilapia is a tropical fish, it is not suitable for stocking in cold fields and it is difficult to survive the winter. It is not widely promoted at present. Crucian carp is generally suitable for shallow water life, omnivorous, easy to produce fry, and good meat quality.

2. What fish are suitable for raising in rice fields?

In rural areas, basically every household has its own rice fields. Some farmers also raise some aquatic products in them to make money. The most common is fish farming. In fact, you can raise several kinds of aquatic products. Here are six low-cost and high-efficiency aquatic projects recommended to you.

The following aquaculture products are low-cost and highly profitable in rice fields:

1. Fish farming in rice fields

Fish farming in rice fields is mainly based on rice, while fish farming is also considered. Not only can fish products be obtained, but fish can also be used to eat pests and weeds in rice fields. At the same time, the fish's excretion of manure and turning over of the soil promotes the decomposition of fertilizer, creating good conditions for rice growth, thereby achieving the goal of increased rice production and fish harvest. Generally, rice production can be increased by about 10%. The main farmed fish are grass carp and carp, and crucian carp, silver carp, bighead carp, and dace can also be farmed.

2. Farming shrimp in rice fields

Dig trenches around the rice fields and use the shallow water environment of the rice fields to grow rice and raise crayfish. Rice is planted and raised from late April to early May, and the seedlings are planted from the end of May to early June. Shallow water, wide rows, and dense planting methods are adopted, and the planting density on both sides of the trenches on the inner side of the ridge is appropriately increased to give play to the marginal advantages. The specification of crayfish stocking is 200-300 per kilogram, and the density is 3,000-4,000 per mu, and the time is from April to May.

3. Raising loaches in rice fields

Raising loaches in rice fields is a relatively simple breeding method, but it requires raising and reinforcing the ridges, and installing escape-proof facilities at the inlets and outlets. Dig a "well"-shaped ditch in the field, 30 to 40 cm wide and 50 cm deep, and release 1,000 to 2,000 loach fry per mu. Use livestock manure and compost as base fertilizer, and feed bean cake, vegetable cake, rice bran, etc. every day. Field management is the same as that of ordinary rice fields, and more than 50 kilograms of mature loaches can be produced per mu.

4. Raising crabs in rice fields

Crab farming in rice fields is a rice-crab symbiotic farming model. Rice planting adopts large ridges with double rows, edge row density, soil testing and fertilization, biological pest control and other technical methods, so that crab-raising rice fields have sufficient sunlight and fewer diseases, which not only ensures rice yield, but also produces high-quality rice. River crab farming adopts early temporary rearing, early feeding, and early field planting, which can not only remove weeds in rice fields and prevent rice pests, but also improve soil fertility through feces.

5. Raising frogs in rice fields

Frog farming in rice fields is a symbiotic breeding model of rice and frogs. It can not only control the harm of rice field pests and reduce the use of pesticides, but also maintain the natural state of frog survival, which is beneficial to the growth and development of frogs and saves breeding costs. At the same time, frog farming in rice fields has significantly increased income. The utilization rate of paddy fields where frogs are released is about 80%. Although the total rice output has decreased by about 20% due to the reduction in effective planting area, the economic benefits have greatly increased.

6. Raising eels in rice fields

The rice field eel breeding model is to slightly transform the rice field with good water retention performance as a breeding base. The transformation of the rice field mainly involves digging one or several small eel ditches in the rice field and setting escape prevention nets on the rice field ridges. There are many advantages to raising eels in rice fields. It does not affect the cultivation, management and harvest of rice. It can also use the good shallow water conditions and shade environment in the rice field to implement semi-artificial and semi-wild breeding of eels, thereby increasing the output rate of farmland.

3. What are the fish Pokémon?

Goldfish: A fish-shaped Pokémon with a mostly white body and red limbs. It has sexy pink lips. It has fins on both sides of its body. Its tail is wavy. It has a sharp horn on its head. If you accidentally anger it, you will suffer a fierce attack.

Kingfish: Looks like a koi or goldfish because it is a large fish with orange as the main color. It is a strong swimmer and can swim upstream and even up waterfalls. It can also use its powerful horns to drill holes in hard rocks to protect its eggs.

Magikarp: It is considered to be satisfied with just jumping, but it is extremely weak in combat, but it is a tenacious Pokémon that can live in any dirty water. It is called the weakest Pokémon, but after evolving into Gyarados, its strength is greatly improved.

4. Which edible fish can be raised together?

1. Mixed culture of silver carp and bighead carp

Silver carp and bighead carp both live in the middle and upper layers of the water body. Silver carp feeds on phytoplankton, bighead carp feeds on zooplankton, and zooplankton eats phytoplankton. Therefore, when silver carp and bighead carp are cultured in the same pond, the relationship between them must be considered. If the stocking amount of silver carp and bighead carp is equal, the growth and reproduction of zooplankton will be restricted due to the large amount of phytoplankton swallowed by silver carp, which will affect the growth of bighead carp; if the stocking amount of bighead carp is too small or silver carp is cultured alone, not only the zooplankton resources cannot be utilized. It is also not conducive to the growth of phytoplankton. In the co-culture of silver carp and bighead carp, it is generally more appropriate to raise 1 bighead carp of the same size for every 4-5 silver carps.

2. Mixed culture of grass carp and bream

Grass carp and bream both live in the middle and lower layers of the water body, and usually feed on grass. In order to avoid competition for food and promote growth, it is usually adopted to increase the size of grass carp and increase the size of bream. The mixed breeding ratio is 4-5 breams of about 10 cm for every 0.5 kg of grass carp seeds. This can not only avoid competition for food, but also make full use of the bream to eat the leftover bait of the grass carp, which plays a role in cleaning the feeding area.

3. Mixed breeding of silver carp and carp

Black carp often live at the bottom of the water and mainly feed on shellfish. Since black carp are relatively quiet when eating, carp are more likely to snatch food. In order to avoid this contradiction, large-sized black carp seeds can be used. Generally, 0.5 kg of large-sized black carp seeds are stocked, and a 10 cm carp is raised.

4. Mixed culture of tilapia, white crucian carp, silver carp and bighead carp

Tilapia feeds on algae and leftover bait, while white crucian carp is an omnivorous fish that also feeds on plankton. When mixed with silver carp and bighead carp, there is a certain contradiction in the bait. Generally, the first half of the year focuses on the feeding and management of bighead carp and silver carp. In June and July, fish that meet the market specifications are caught in batches to free up water and bait for the growth of tilapia and white crucian carp.

5. Mixed breeding of “food fish” and “fat fish”

Grazing fish such as silver carp and grass carp require fresh water, but due to their large food intake, they excrete a lot of feces, which can cultivate a large amount of plankton and easily make the water rich. However, fat fish such as silver carp and bighead carp can eat plankton and keep the water fresh. Therefore, raising grazing fish and fat fish in the same pond can greatly increase production. Generally, 0.5 kg of "grazing fish" can bring out 0.2-0.25 kg of "fat" fish. When arranging the proportion of these fish in mixed culture, you can refer to this data to determine the stocking amount of each.

6. Mixed culture of fish and turtles

Stocking fish in a turtle pond can not only make full use of the water surface of the pond, but also achieve the effect of symbiosis and mutual benefit.

The pond for mixed fish and turtle breeding is basically the same as that for ordinary fish ponds, with an area of ​​1/15 hectare to 2/15 hectare in general, and can reach 3/15 hectare to 5/15 hectare for large breeding. The pond requires a quiet environment, clean water, sufficient sunlight, and a water depth of 2-2.5 meters. A sun terrace 10-30 cm above the water surface and an area of ​​10-15 square meters is built in the northwest and southeast of the pond for the turtles to rest and bask. In order to prevent the turtles from escaping, a 1-2 meter high wall should be built on the bank of the pond, and fish interception equipment should be installed at the inlet and outlet of the pond.

There should be a certain ratio for fish and turtles to be mixed. Generally speaking, in the adult and brooding ponds, the stocking amount of fish per mu of water surface is: 200-250 silver carp of 15 cm in length, 40-45 bighead carp, 30-50 bream of 12-13 cm, and 120 carp. The stocking amount of turtles is: 5-10 young turtles of 10-12 grams per square meter, or 1-2 turtles of more than 100 grams.

In fish and turtle mixed culture ponds, daily work such as feeding, pond inspection and disease prevention should be done according to the living habits of the fish and turtles. It is generally not suitable to breed fish in juvenile and young turtle ponds. In addition, turtles should be raised in separate ponds before wintering.

5. What are the edible fish in the sea?

1. Sharks live in the ocean and are fish in the ocean. Sharks have existed on Earth 300 million years before the appearance of dinosaurs, which means they have existed for more than 500 million years. They have hardly changed in the past 100 million years.

2. Hairtail, belonging to the class of bony fishes, order of Perciformes, family of Hairtails, in the subphylum of Vertebrata under the phylum Chordata. It is mainly distributed in the western Pacific Ocean and the Indian Ocean, and is distributed in the source of the Yellow Sea, the East China Sea, the Bohai Sea and even the South China Sea in China. It is known as one of the four major seafoods in China, along with large yellow croaker, small yellow croaker and squid.

3. Grouper, inhabits coastal reefs, undulating and pebbly sea areas, coral reefs, shipwrecks or artificial reefs. Grouper is a typical predatory carnivorous fish. It relies on its sensitive vision and light and color perception ability to ferociously prey on fish, shrimp, crab, octopus, and even barnacles and other marine life. It especially likes to eat fresh animals. It is an endangered and precious species.

4. Cuttlefish, also known as squid, cuttlefish, eyefish, etc. It belongs to the phylum Mollusca, class Cephalopoda, order Decapoda, family Sepiidae. The "cuttlefish" or "squid" referred to in China mostly refers to the two species of Mansoni's needleless squid and golden squid, which are mainly produced in the East China Sea.

5. Flatfish are particularly suitable for bottom-dwelling life on the seabed. Because of their flat bodies, both eyes are on the side of the body facing upwards, and the color of this side matches the surrounding environment well; the side facing downwards is white. The surface of the flatfish's body is covered with very fine scales. Flatfish have only one dorsal fin, which extends almost from the head to the tail fin.

6. Can the bottom of the crab pond be changed on rainy days?

The process of river crab breeding requires "the right time, the right place and the right people". The so-called time, the most critical thing is that the temperature, light, rainfall, etc. are suitable for the growth of river crabs. However, many areas often have continuous rain in certain seasons. The continuous rainy weather has caused many changes in the pond environment and river crabs. In order to reduce costs, many farmers ignore the post-rain management work, resulting in large fluctuations in water quality and bottom quality after rain, which has caused certain impacts on river crabs that are or are about to molt.

7. What preparations should be done before releasing adult crabs?

1. The water quality should be good, the water source should be sufficient, and the drainage should be convenient. To ensure good air permeability, sandy or sandy loam should be the main soil. The water depth in the pond should be controlled at about 1m, and the shallowest place should not be less than 10cm. After the pond is built, leave a few mounds in it and plant aquatic plants such as reeds, wild rice stems, and calamus.

2. Good varieties are the key to high yield. Choose good crab seedlings and soak them in the pond for a few minutes. Repeat the operation several times to observe the crabs' ability to adapt to the water quality. If there is no adverse reaction, you can put them in.

3. In daily feeding management, it is forbidden to use feed that has been stored for a long time and has deteriorated. At this stage, meat feed should still be the main feed, and some nutritious vegetarian food should be used in moderation, especially more plant feed, so as to ensure good water quality in the pond. The number of times the feed is used should be determined according to the changes in climate temperature.

4. Remove germs and bacteria in the pond to create a good breeding environment for healthy crab farming. Pond disinfection management should be done before and after breeding. Before the young crabs enter the pond, they should be disinfected in advance, and the silt in the pond should be cleaned in time in winter. During the breeding management process, the disinfectant selected should be low in toxicity and fast in volatility to avoid environmental damage caused by disinfection.

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9. What aquatic plants can be planted in crab ponds?

Ceratophyllum

Duckweed has the advantages of high temperature resistance, crabs like to eat it, and strong regeneration ability. The disadvantage is that it is easy to smell the water when it grows vigorously. Based on this feature, duckweed is more suitable for planting in large water bodies such as rivers, shallow lakes, etc. When the coverage rate of this kind of waterweed exceeds 70%, it should be appropriately thinned to prevent the pond from becoming stuffy.

10. What are the things to pay attention to when raising catfish in a pond?

Answer: Before putting the fingerlings into the pond, soak them in 3%-4% salt solution for 5 minutes to disinfect their body surface; adjust the water temperature in the container for transporting the fingerlings to balance the water temperature in the breeding pond, and then put the fish into the pond for breeding; put enough fingerlings in at one time.