Breeding hairy crabs is suitable for shallow water culture, and crabs can't live in deep water all the time.
What are the varieties of hairy crabs?
There are many kinds of hairy crabs, including more than 500 in China.
But there are four species close to it, that is, Japanese mitten crab, narrow jaw mitten crab, straight mitten crab and Taiwan Province mitten crab.
Here are some common varieties:
1, Yangcheng Lake hairy crabs
Yangcheng Lake hairy crab is one of the famous hairy crabs, which is famous for its fat crab paste and huge size.
Its aquatic environment is extremely superior, which also leads everyone to think that it is greatly limited by its growth environment.
In fact, on the contrary, Yangcheng Lake hairy crabs are a kind of highly adaptable species, and they can also have good output under some harsh environments, which is one of the goals of farmers and worth considering.
2. Taihu Crab
In recent years, a species of hairy crabs has emerged, which is famous for its thick crab paste and fresh and tender meat.
In recent years, in order to expand its market scope and degree, a large number of detailed information on Taihu crab culture technology has been revealed, which has given the majority of farmers an opportunity to systematically understand their culture process.
And the difficulty of buying crab seedlings will be relatively lower, coupled with its own rapid growth rate, the market of Taihu crab has expanded rapidly in recent years.
If farmers want to withdraw their capital quickly, they can consider Taihu Crab.
3. Gucheng Lake Hairy Crab
Gucheng Lake Hairy Crab is a relatively technical species in hairy crabs, mainly because it has certain requirements for the environment and takes a high-quality route.
In recent years, in order to enable more people to breed hairy crabs in Gucheng Lake, everyone has come up with various methods to solve this problem. At present, it is easier to get started than to carry out cage breeding after rectifying the breeding waters.
The emergence of this method can be regarded as a solution to the difficulty of hairy crab breeding in Gucheng Lake to some extent.
Farmers who plan to take the high-end variety route to obtain high profits can choose this.
Is it better to raise hairy crabs in deep water or shallow water?
Deep water culture is not allowed, but shallow water culture is good.
Crabs belong to amphibians and cannot be raised in deep water. Crabs like to live in caves on mud banks or beaches of rivers and lakes, or hide in gravel and grass.
What kind of grass does hairy crabs grow?
The aquatic plants in the crab pond mainly include Elodea nuttallii, Hydrilla verticillata and Sophora alopecuroides.
1, Elodea nuttallii: It begins to grow when the water temperature is above 5℃, and it can overwinter in cold winter. When weeds such as Sophora alopecuroides and Hydrilla verticillata have not germinated, they have grown in large quantities, and April-June is the peak season for growth.
2. Sophora alopecuroides: It is planted around Qingming Festival, and it grows rapidly from May to August, and the water depth is not easy to float.
3. Hydrilla verticillata: The growth period is from April to August, and it is not easy to rot when floating on the water surface in high temperature season, so it has high nutritional value.