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 are the reasonable methods for stocking fish in large waters?

The method for the rational development of fish in large waters is mainly to classify the farmed fish first, so that there is no phenomenon of big fish eating small fish, and then feed them carefully.

3. 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.

4. What fish should not be kept in the fish tank when aquatic plants are placed?

Friends who keep fish all want to put some water plants in their fish tanks, so that the fish can swim among the water plants, which is a unique charm. However, what kind of fish should not be kept in water plant tanks? Today, the editor has sorted out some information, hoping to help everyone.

1. Large pencil fish: likes to nibble on the thin water plants in the aquarium.

2. Silver plate: mainly feeds on aquatic plants.

3. Red-bellied Firemouth: It is restless and highly destructive to aquatic plants.

4. Snake fish: They like to dig in the sandy bottom, which often prevents the roots of aquatic plants from taking root in the water.

5. Silver shark: It likes to feed on the tender shoots of aquatic plants.

6. Crown loach: commonly known as three-striped loach. It likes to dig in the sandy bottom and destroy the orderly arrangement of aquatic plants.

7. Red-tailed black shark: It acts in groups and likes to dig in the sand and destroy aquatic plants.

8. Golden Baby: A very beautiful pufferfish, it is very popular among aquarium enthusiasts. Golden Baby feeds on snails. However, since they also like to attack aquatic plants and often bite large holes in the leaves, they are not suitable for being kept in aquariums with aquatic plants.

9. Goldfish: Goldfish are not tropical fish and cannot adapt to water temperatures above 26 degrees. Goldfish like to nibble on tiny aquatic plants.

5. Will California bass eat other fish in the stocked pond?

A: They will eat other fishes. Because California bass is a carnivorous fish, it is very ferocious, so California bass will eat other fishes.

California bass mainly inhabits waters with low turbidity and aquatic plants, such as lakes, shallow water areas of reservoirs (1-3 meters deep), creeks in swampy areas, stagnant water areas of rivers, ponds, etc. It often hides in underwater rocks or branches, has the habit of occupying land, and has a small range of activities. When raised in ponds, it likes to live in sandy or sandy muddy still water environments that are not turbid, and moves in the middle and lower water layers. It has a tame temperament, does not like to jump, and is easily frightened.

6. What should be the reasonable fish stocking density?

The stocking density of fish is mainly related to the fish species and size. Generally, the number of conventional fish species stocked per acre is 600-1200. For larger or faster growing fish, the stocking density can be controlled to be smaller. For smaller and slower growing fish, the initial stocking density can be higher.

7. What is the best way to raise pigs in the mountains?

It is best to raise pigs in the mountains and fence the entire mountain. Although pigs are domestic animals, they are domesticated from wild boars. Pigs like to eat in the wild. If the conditions are suitable, raising pigs in the mountains is a good idea. Pigs can forage freely in the mountains, saving the cost of feed and are not prone to disease. The economic benefits are good.

8. What animal doesn’t look like a fish but is a fish?

The lancelet is known as the least fish-like fish.

Amphioxus, also known as Bai's lancelet, slug fish, double-pointed fish or sea hair, is a precious marine animal. Due to its extremely special morphological structure, it has the characteristics of both invertebrates and vertebrates. It is a typical representative of the transitional type from invertebrates to vertebrates. Therefore, it is highly valued by the biological community at home and abroad.

The appearance of lancelet is very strange and interesting. It has a very small body, flattened on the left and right sides, pointed and thin ends, and a spindle-shaped body. It is generally only 4 to 5 cm long.

9. What type of fish is tilapia?

Tilapia - native to Africa, it is a tropical fish. The genus Tilapia includes more than 100 species, including subspecies. Tilapia has the characteristics of fast growth, high yield, omnivorous diet, few diseases and strong reproductive capacity.

10. What are the characteristics of fish?

The shape, body temperature, bones and skin of fish are different from those of other animals. In addition, fish have an organ that other animals do not have - the swim bladder. The existence of the swim bladder is also the reason why fish can float in the water.

1. Shape

Fish have a variety of shapes, sometimes quite different, but in general most fish are elongated and streamlined. Generally speaking, fish that swim fast in the water have elongated bodies, while fish that swim slowly or live at the bottom of the water are relatively flat. But some fish have very strange shapes, such as seahorses. The smallest fish is less than 1 cm, and the largest fish (whale shark) can reach 18 meters.

2. Body temperature.

Fish are cold-blooded animals. The body temperature of some tunas and sharks (especially sharks of the family Carcharhinidae) is higher than the temperature of the surrounding environment. Bluefin tuna is the only warm-blooded fish.

3. Bones

The skeleton of a fish is made of cartilage (cartilaginous fish) or bone (bony fish). There are four to seven gills on both sides of the skull, of which the front one has evolved into the zygomatic bone. The spine of a fish is connected to the skull, the ribs in the chest are connected to the spine, and there are long spines extending from the spine on the back, tail and abdomen.

4. Skin

Fish have two layers of skin: the outer layer contains glands that secrete mucus, and the inner layer contains many connective tissues, scales and pigment cells. The outer layer of mucus helps fish reduce drag when swimming. Cartilaginous fish do not have mucus, but the tiny, tooth-like protrusions on their skin have a similar function.

5. Fish bladder

The swim bladder is an inflatable sac-like organ in the fish's body. Its main function is not breathing. Fish rely on the swim bladder to adjust their specific gravity. Fish can use the swim bladder to slowly rise or descend without moving. Most bony fish have a swim bladder, an organ for regulating buoyancy.