How to raise a crayfish? Although crayfish is delicious on the table in China, it is also a pet that many people will keep among aquarium pets. It is easy to raise, but many people don't know how to raise it. Let's see how to raise a crayfish.

How to raise a crayfish 1 1, container

Crayfish can be kept in plastic pots, sorting boxes, acrylic or glass fish tanks. Note that the height of the container should not be lower than the body length of crayfish to prevent it from escaping.

2. Environment

If there is a filtration system, you can arrange to simulate the natural environment, using tree roots, bamboo tubes and so on. It is placed for them to climb, and plants such as Eichhornia crassipes and Haematococcus verticillata are planted for them to avoid, inhabit and feed. The water depth is 0.5 meters. If there is no filtration system, it is recommended to raise it in a bare tank and put a small amount of plants. The water depth should be 3-5 cm. When the water quality deteriorates, change the water in time.

3. Quantity

Too high stocking density of crayfish can easily lead to hypoxia, fighting disability and so on. Therefore, there is at most one adult crayfish per square decimeter at home, and too many males can easily lead to fighting, so the male-female ratio is 3: 1.

Step 4: Feed.

Crayfish are omnivorous. It not only likes to eat animal bait such as fresh miscellaneous fish, but also likes to eat plant bait such as soybean, bean cake, corn, fruit and fresh aquatic plants. Family rearing can feed fish, snails, shrimps, watermelons and steamed bread.

Under the condition of ensuring the quality, the daily feeding amount is generally based on eating, eating and leaving no residual bait. From July to 10, the water temperature is suitable, which is the growth season of shrimp, and it is fed twice a day, 1 time each morning and evening. Feed 1 time every day in other seasons.

Because crayfish mainly eat at night, the feeding amount at night accounts for 70%-80% of the whole day's bait. Cast more when the weather is sunny, and cast less when it is hot, stuffy, rainy or the water quality is too strong; A large number of shrimps throw less when molting, and more after molting.

Crayfish breeding at home is relatively simple, that is, we should pay attention to the density of breeding and change the water in time, so the growth rate is still relatively fast.

A small expansion of knowledge

Crayfish are omnivores and can eat animal and plant feed. Plant feed mainly includes plant stems, aquatic plants, roots and stems of aquatic plants, epiphytes, filamentous algae and so on. Animal feed includes aquatic insects and snails, mussels, fish and meat.

Growth rate:

First of all, for the crayfish population before 1 year old, oyster shells are used to spread around the bottom of the pond, and there is no artificial cover in the crayfish. Since the age of two, tetrachloroethylene pipes have been used as shelters twice as often as crayfish.

Secondly, feed wrasse and minced meat 3 days after sowing. After 0 months, it is 65438+3 days to feed setose, minced meat or mixed feed. When the shrimp grows to 6-7 cm, feed all snails, shellfish and suitable vegetables, such as wheat, bran, corn and cakes.

Crayfish is becoming more and more common among aquarium pets. Their colors and shapes are dazzling, about 3-4 cm long, and can reach 30 cm in adulthood.

How to raise a crayfish? Is it easy to raise a 2 crayfish?

Environment: Crayfish often live in diving environments such as streams or swamps, or on sloping dams, because it needs to be exposed to external breathing from time to time, especially in summer, the dissolved oxygen in the water is low and it is easy to lack oxygen. So rice fields, ponds and rivers in China are very suitable for crayfish breeding. If crayfish are raised in rice fields, be careful not to use chemical fertilizers and pesticides.

Crayfish don't like sewage as circulated on the Internet, but prefer clean environment. It is only because of its miscellaneous eating habits that crayfish spread like that. It is necessary to protect the water quality and provide some aquatic plants for its habitat.

Feed: Crayfish eat a variety of foods, including aquatic plants, insects and even animal carcasses, which is why some people think crayfish are "dirty". However, crayfish are mainly raised with synthetic feed, which is usually fed at night, once at night and once at night. Crayfish have a high demand for calcium. If possible, you can feed them with snails and clams.

Anti-escape: Crayfish can make holes and land, so we must take anti-escape measures when breeding crayfish, otherwise it may be empty. Anti-escape nets are generally used to prevent them from escaping.

Fishing: crayfish are not caught at once, but are raised and caught at the same time. Pay attention to the size of crayfish. When a large number of individuals are available for listing, they will start selective fishing, and the big ones will be picked up and sold, and the small ones will be put back. When the density of crayfish is reduced, these released shrimps will grow faster. Crayfish can breed almost all year round, and shrimps with eggs will be put back.

Matters needing attention

Generally speaking, the water depth of 3-5 cm is more suitable for lobster growth. Therefore, the cultured water should not be too deep, otherwise it will make it difficult for crayfish to breathe. But the water should not be too shallow, otherwise the temperature of the weather will affect the water temperature, which is not conducive to the growth of crayfish and is more likely to meet the moisture requirements of crayfish in the water.

When raising crayfish, it is necessary to change water frequently, and some aquatic plants can be planted, which can purify the pond environment, ensure the water quality, and also provide crayfish with space for rest and activities.

Crayfish must be raised in a way that prevents them from escaping. The method is to place fishing nets around or at the bottom of the water tank, which can effectively prevent them from climbing over the water.

How to raise a crayfish 3 1 and prepare a feeding container.

The water in the container is about five centimeters.

3. Crawfish eat omnivores and feed more food.

Crayfish can also be kept as ornamental pets, and the requirements for keeping crayfish should not be too high. As long as we know its life habits and laws, we can feed it well.

Keeping crayfish as pets should pay attention to the following three aspects.

First, prepare a feeding container for crayfish, which can be a plastic basin or an acrylic box, as long as it can make crayfish crawl.

Second, the amount of water in the prepared container is about. About five centimeters should not be too high or too low, which will affect the normal life of crayfish. If there is a slope in the container, it can better meet the survival needs of crayfish.

Third, crayfish can be satisfied by eating omnivores, such as steamed bread with aquatic plants and various small fish and shrimps.

The water temperature requirement for feeding crayfish is relatively high. The feeding frequency of crayfish will change with different seasons. It can be fed twice a day in July-65438+1October and once in other seasons.

Water temperature:

Lobsters live in a low water temperature environment, and the lowest water temperature in winter is about 5℃-6℃, which is suitable for lobster culture. If the water temperature is low, the maturity will be extended to 5-7 years. The suitable temperature for growth is 20℃-23℃, at which lobster grows fastest in water, so in winter when the water temperature drops, using warm drainage is one of the methods to promote growth.

Salinity:

The suitable salinity range of lobster is 26.90‰-34.40‰, and it can live and metamorphose in low salinity seawater of 23.50‰.

Bottom material:

In order to avoid predation by natural enemies, the metamorphosed larvae of lobsters turn to benthic life, and the gravel at the bottom is very important as a place for lurking and foraging. After 3-4 days of metamorphosis, lobsters can burrow and lurk in sand with a particle size of 0.4- 1.00 mm, and after 8 days of metamorphosis, they can lurk in sand with a particle size of 2.0-3.0 mm.

Growth rate:

For the lobster population before 1 year old, it is only necessary to lay the bottom of the pond with oyster shells, without putting artificial shelter, and feed them with mussels as bait. Since the second age, tetrachloroethylene tubes have been put into shelters, twice as many as lobsters.

Feeding:

Small fish and minced meat are put in within 3 days after seedling release, and small miscellaneous fish, minced meat or compound feed are put in after 3 days, 1 month. When the shrimp seedlings grow to 6-7 cm, they can all be fed with crushed snails and mussels and appropriate plant feed such as wheat, bran, corn and cake or compound feed.

The daily feeding amount is based on satiety, eating and leaving no residual bait. Generally, crayfish and adults are fed at 15%-20% of their body weight, which can be adjusted according to their eating conditions. Feed twice a day, once in the morning and once in the evening, and the feeding amount at night accounts for 70%-80% of the daily feeding amount. Bait should be thrown around the pond, and properly dispersed, mostly in places where lobsters are concentrated to facilitate their feeding.