CATDOLL : CATDOLL: Tilapia farming temperature requirements, how many fry can be placed per acre

Tilapia farming temperature requirements, how many fry can be placed per acre

The optimal temperature for the growth of tilapia is 25°C-33°C. Because tilapia is a tropical fish, it has a relatively high temperature requirement. If the temperature is too low or too high, it will affect its survival, growth and reproduction. When the water temperature drops to 18°C-20°C or exceeds 35°C, their growth will slow down. If the water temperature drops to 18°C ​​or is higher than 37°C, their growth will stop.

1. Temperature requirements for tilapia farming

1. Since tilapia is a tropical fish, it has a relatively high temperature requirement. If the temperature is too low or too high, it will affect its survival, growth and reproduction. For example, Mozambique tilapia can grow normally in a water temperature range of 18°C, but its optimal growth temperature is 25°C-33°C.

2. When the water temperature in which tilapia live drops to 18°C-20°C or exceeds 35°C, their growth will become very slow, and when the water temperature drops to 18°C ​​or exceeds 37°C, their growth will stop. Their low lethal temperature is 12°C and their high lethal temperature is 38°C.

3. When breeding tilapia, it should be noted that the water source for tilapia must be clean. The pond should be built in a place with fresh water, no industrial pollution, good soil and convenient transportation. The pond area should be 5-10 mu and the water depth should be 2.5-4 meters. The pond must have a flat bottom, a solid foundation, good water retention performance, and good ventilation around it without tall sunshades.

2. How many fry can be placed per acre for tilapia farming?

1. Tilapia farming: 800-3000 fry can be placed in one mu of fish pond, usually around 1500. The fish density depends on the number of oxygenation equipment and pond conditions. Tilapia can be raised alone, as the main species, or in combination in cages. Large-sized fish should be the main species. The size of the cage is generally 10-50 grams of tail weight. When the dissolved oxygen content is above 3 mg per liter, the stocking density is 3-20 kg per cubic meter.

2. When breeding tilapia, you must maintain good water quality. Good water quality can stimulate the appetite of tilapia and reduce the frequency of feed use, thereby increasing its growth rate on the basis of saving feed. In the early stage of breeding, if you want to save costs, you can use fertilized water breeding, but in the middle stage, you must add new water in time to adjust the water quality.

3. The fish pond must be equipped with an aerator, which can be equipped at the principle of one unit for every 5 mu. This can ensure that tilapia does not float under high-density breeding conditions, and at the same time ensure the oxygen content of the water. Because tropical fish have a relatively high requirement for oxygen, the aerator or the machine must be maintained regularly to avoid malfunctions during use.

Which fish is suitable for high-density farming?

Which fish is suitable for high-density farming?

Which kind of Zenqing fish is suitable for high-density farming? When it comes to freshwater fish suitable for high-density farming, crucian carp comes to mind as a common freshwater fish. Its development and utilization history is very long, and it is also the main fish on the daily table of ordinary people. So which kind of fish is suitable for high-density farming?

Which fish is suitable for high-density breeding? 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 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.

Which fish are suitable for high-density farming? 2 Choice of pond and fish species

The pond should be built in a place with good traffic conditions, no pollution, and sufficient water resources. The area should be at least 2 mu, the water level should be 1.5~2.5 meters, and the edge of the pond should be reinforced with stones. If it is used to feed grass carp, there should also be a place to plant aquatic plants around it. The use of mixed breeding in ponds is the main measure to increase production. The species to be matched should consider the use of different water layers, and avoid fish with similar feeding habits competing for food.

If the local grass is abundant, consider feeding grass carp as the main species, and then add carp, bighead carp, etc. If the local fertilizer is abundant, consider feeding silver carp, bighead carp, tilapia and other fish. If it is a single feed, choose two species of fish for mixed breeding, and control the ratio of main fish to auxiliary fish at 80:20. Ranking of freshwater fish tolerance to hypoxia.

Stocking density of pond fish. Top ten fastest breeding freshwater fish.

When stocking fry, a reasonable density can ensure the ideal yield during the breeding period. Stocking density can be expressed in terms of tail number and weight. In actual operation, there are two methods of stocking density: empirical method and calculation method. Top 10 freshwater fish that will never die.

Empirical method: It refers to determining this year's stocking density based on the survival rate and yield of fish raised in ponds in previous years. If the size of fish raised last year was small, the stocking amount should be reduced this year, otherwise it can be increased.

Calculation method: Stocking amount per mu = gross yield per mu / (planned adult fish size X survival rate) Top ten fastest breeding fish.

What fish are best suited for farming at low temperatures?

According to the general pond breeding level, the yield per mu is ~ kg, and the yield per mu of intensive ponds is ~ kg. Taking the 8-month breeding of grass carp as an example, the survival rate of grass carp is 75%~80%, and the weight gain multiple is 7~10 times. If 50 kg of fry are placed in each mu of pond, the yield will be kg during the fishing season.

In short, the stocking rate of the pond is closely related to the water quality, feed and environment. When considering the stocking rate of fish species, you should be flexible. Generally, the stocking number per acre of pond is about ~ fish. If there are not many large fish, the stocking density can be moderately increased.

Freshwater fish suitable for high-density farming: Farming, I want to raise fish, which freshwater fish variety is better!

Crucian carp is easy to raise and sell, with low cost and high return

If you are new to fish farming, you can start with this, as for other domestic fish, grass carp is for sale, but it needs a lot of grass feed, and if you raise grass carp, you can also raise silver carp, because silver carp is a wild freshwater fish that feeds on the excrement of grass carp.

Which fish are suitable for high-density farming 3 Freshwater fish suitable for high-density farming: Which fish are best suited for farming at low temperatures?

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℃.

The above is about the reasonable density of freshwater fish farming. How many fish should be raised in one acre of fish pond? The above is about the reasonable density of freshwater fish farming. How many fish should be raised in one acre of fish pond? After reading the freshwater fish suitable for high-density farming, I hope this will be helpful to everyone!