CATDOLL : CATDOLL: Fish suitable for high-density farming

Fish suitable for high-density farming

Fish suitable for high-density farming. With the passage of time and the advancement of fish farming technology, more and more people have joined the fish farming craze. In order to improve economic benefits, farmers often increase the density of fry. Nowadays, high-density fish farming has been widely adopted by farmers. Next, let’s take a look at the fish suitable for high-density farming.

Fish suitable for high-density farming 1 1. Rainbow trout

The maximum living temperature of rainbow trout is 0-30℃, the suitable living temperature is 12-18℃, and the optimal growth temperature is 16-18℃. When the temperature is lower than 7℃ or higher than 20℃, the appetite will decrease and the growth will slow down. When the temperature exceeds 24℃, the feeding will stop and the trout will gradually become weak and die.

2. Sturgeon

Sturgeons live in the middle and lower layers of water bodies. Both migratory species in sea rivers and sedentary species in rivers move upstream during spawning. They mostly stay in river channels or near-shore deep waters in winter. Larvae generally feed on plankton. Juveniles mainly feed on bottom-dwelling aquatic oligochaetes, aquatic insects, small fish and shrimps, and mollusks. Adults feed on bottom-dwelling animals or animal and plant debris, while shovel sturgeons still feed on plankton. Freshwater fish suitable for deep-water aquaculture.

3. Elegant fish

Ya fish is a precious cold-water fish grown in Ya'an. It is shaped like a carp and has scales as fine as trout. It has a good taste and meaty texture, and is rich in nutrition. You will never get tired of eating it for a long time, and it has been a tribute for generations.

4. Taimen

Taimen likes to live in clear cold water (water temperature does not exceed 20℃), and is mainly distributed in some mountainous waters with good forest vegetation protection. In the northern region, after the ice and snow melt from late April to early May, Taimen migrate upstream to the tributaries of rivers to feed, grow, lay eggs and reproduce. High-density breeding can raise 60,000 kilograms of fish per acre.

5. Northern Pike

Although the white pike is distributed in high-altitude cold areas, it is a sub-cold water fish. It has a relatively wide range of adaptability to temperature and strong adaptability. The adaptable temperature range is 0℃～30℃. It can still survive at 35℃. The feeding temperature is 16℃～26℃. According to the research results of Gansu, the optimal growth temperature is 23℃～24℃.

Fish suitable for high-density farming 2 1. Guppy

1. Guppy is one of the easiest tropical freshwater fish to raise. It has a small body, colorful patterns on its body, and a gentle temperament. It can be raised together with gentle small and medium-sized tropical fish. It is usually lively and active, has a short lifespan, is highly adaptable, and can withstand low temperatures of 16°C and dirty water.

2. Guppies are called "million fish" because they reproduce regardless of season and can produce normally in winter. If conditions are suitable, they can reproduce about once a month and produce 10-120 fry each time, which means they produce a lot of fry in a year.

2. Grass carp

1. Grass carp is one of the “four major carps” and is also an important freshwater farmed fish in China. It has an elongated body, a nearly cylindrical front part, a laterally flattened tail, a round abdomen, no abdominal ridges, a tea-yellow body, a grayish-white abdomen, and gray-black edges of the scales on the sides of the body.

2. Grass carp is lively and swims fast. They often feed in groups and usually like to live in the lower layer of water and near the shore with abundant aquatic plants.

3. Crucian carp

1. Crucian carp is one of the most common freshwater fish in my country. It has the characteristics of wide diet, strong adaptability, strong reproductive ability, strong disease resistance and fast growth. It has low requirements for water temperature and is easy to breed. It is an important farmed fish in my country.

2. Crucian carp has a plump body and usually swims underwater. When the temperature rises, it will swim in the middle and lower layers and the middle and upper layers of the water. Its meat is plump and it mainly feeds on plant-based food.

4. Silver carp

1. Silver carp (fathead carp) has a relatively flat body, a large and wide head, which is about 1/3 of its body length. It has an impatient temperament and is good at jumping. It lives in the middle and upper layers of water bodies and is the most widely distributed freshwater fish in my country.

2. Silver carp is a filter-feeding fish. In the fry stage, it feeds on plankton such as rotifers and copepods. When the body length is more than 1.5 cm, it gradually turns to eating phytoplankton, bean dregs powder and rice bran, etc. It especially likes artificial micro-granular compound feed.

5. Thai fighting fish

1. Siamese fighting fish often lives in slow-flowing waters such as lakes and rice fields in tropical areas. Its salinity tolerance is less than 0.05%, making it a typical freshwater fish.

2. Siamese fighting fish are aggressive, and male fish often fight with each other to occupy territory or compete for mates. They have strong adaptability to the environment and have a gorgeous and exaggerated appearance. They are one of the easier ornamental fish to raise.

Fish suitable for high-density farming 3 1. Simply farming the four major carps

It is difficult to achieve the goal of 600,000 yuan in annual profit by just doing traditional breeding. Because the price of traditional fish is not high. If we calculate based on 3,000 catties of fish per mu, and the profit per catty is 1 yuan, a 40-mu fish pond can only make a few hundred thousand yuan a year. Even if we calculate based on a profit of 2 yuan, it can only make a few hundred thousand yuan, which is far from reaching 600,000 yuan.

Moreover, fish farmers know that due to price fluctuations, breeding losses and other factors, the profit is far from being so high. Sometimes, they even lose money and cannot even sell the feed back. Therefore, it is impossible to achieve an annual profit of 600,000 yuan by traditional breeding of the four major carps.

2. Breeding high-value fish such as sea bass and sweet-scented osmanthus fish

If the water source environment is good, or if there is a pond by the sea with brackish water resources, you can breed some sea bass, black carp, and shrimp. The prices of these species are relatively high and the profits are also relatively large.

If you have the capital, experience and technology, it is possible to make a profit of 600,000 yuan a year. However, the aquaculture industry is subject to many factors, such as market prices, aquaculture survival rates, disease incidence rates, etc., which cannot be estimated and often depend on the weather.

3. Carry out comprehensive entertainment and leisure operations such as fishing projects and farm stays

If you live in a rural area on the outskirts of the city, not far from the city center and with convenient transportation, you can fish in the fish pond, run a farm stay on the open space near the pond, or open an experiential farm. If you manage the overall business well, it is easy to earn $600,000 a year.

Nowadays, people in cities are tired of working and have free time. They like to drive to the countryside for leisure and entertainment. If you provide a comprehensive place, basically the whole family will spend the whole day there, and then they will bring some green agricultural products back. The profit margin can be imagined, but the premise is that you must have capital investment and understand business.

1. High-density fish farming technology

1. Pond selection: To raise fish, you must first choose a good pond. Generally, water-retaining ponds are most suitable for raising fish. At the same time, the water source must be sufficient. The pond must be drought-resistant and flood-resistant during the dry and rainy seasons.

2. Pond cleaning: After the pond is prepared, it can be cleaned and disinfected. Only when the pond environment is good can the fish grow and live normally. Pond disinfection mainly involves digging out excess silt in the pond, removing weeds in the pond and on the wall, and eliminating pathogens and pests. Quicklime can be used to disinfect the pond during the breeding production process.

3. Fish stocking: After the preparations are completed, fish can be stocked into the pond. The farmer must stock fish of good quality, strong quality, and appropriate density, and at the same time, the species composition must be reasonable.

4. Feeding and management: The normal growth and reproduction of fish are generally inseparable from feeding and management. The focus of management work is mainly on setting bait, fertilizing, regulating water quality and preventing the occurrence of diseases and pests.

5. Feeding: The daily amount of feed must be based on the "four observations", namely the season, weather, water color, and fish eating and activity conditions, and the "four determinations", namely the principles of timing, positioning, quality, and quantity.

6. Fertilization: Fertilization mainly includes basal fertilizer and topdressing. Basal fertilizer must be applied early and in sufficient quantity. Topdressing can be applied less and more frequently. The application of topdressing should also be carried out according to the weather, water and fish.

How many fish can be raised in a two-three-acre fish pond?

1. A three-acre fish pond can raise about 2,000 fish. Before raising fish, you must first raise water. Ordinary tap water cannot be used directly for fish. The water must be disinfected and dechlorinated before use. Disinfection can be done with relevant drugs or special salt. Dechlorination can be done by exposure to the sun or standing.

2. When raising fish, you must ensure that there is enough food. You must pay attention to feeding the fish in moderation, and feed them the amount that they can eat within 5-10 minutes each time. The feeding frequency must be determined according to the size of the fish, and try not to feed them at night or on cloudy days.

3. When raising fish, you must ensure that the water is clean and change the water regularly. The frequency of water changes can be determined according to the habits of the species being raised. Generally, the water should be changed every 7-10 days. Do not let the water temperature and water quality change too much each time you change the water. In addition to ensuring the cleanliness of the water, changing the water can also ensure the oxygen content of the water.