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Soft Shell Crab Farming



Soft Shell Crab cultivation is one of the business opportunity that can bring good profits. However, this type of soft crab is getting more and more popular as all parts of this crab can be eaten. We no longer need to eat crabs with traditional techniques where we have to scrape the hard crab shells to pick up the meat.

The mud crab / mangrove crab (Scylla serrata) has five pairs of legs; the first pair of legs are modified into a pair of claws and not used for movement.

Pollution-free land, good management, and superior Juvenile are important criteria for successful cultivation of soft shell crab.

There are several kinds of mangrove crabs:

  1. Scylla Oceanica: this type of crab color is a little greenish and has a brown line in almost all parts of his body, except in the stomach.
  2. Scylla Serrata: this type of crab has a characteristic grayish color to green reddish shell.
  3. Scylla Transquebarica: the last one is greenish to blackish and there is a little brown line on the legs of the pool.

Compared to the other two crabs, the Scylla Serrata has a smaller size at the same age thus the demand is higher in the market.

Mud Crab Molting Its Shell

Mud Crab Molting Shell

Business Opportunities of Soft Shell Crab Farming

The demand for soft crab is increasing. This is an opportunity for us who have a hobby of raising, especially if our surrounding has the right environmental situation to breed the crabs.

Currently the menu of soft shell crab cuisine is still not so widely available in restaurants even though getting more and more younger generations like to eat this type of seafood.In Malaysia, most of the Fusion or Modern Japanese restaurants serve the soft shell crabs either in whole piece or cut into slices and mix with sushi.Some of the Thai restaurants served the soft shell crab with green curry or mix in “Songtam” – mango salad.

However, breeding soft crabs can not be done easily. We need to learn the technique of crab cultivation in order to make the farming successfully.

Soft Shell Crab Farming Preparation

Over here we will discuss how to cultivate soft shell crab and some tips that we can use to develop this business successfully.

1.Choose the Right Location

Choose a clean, clear and uncontaminated location with a salinity level of 15 to 35 ppt, a water temperature of 24 to 32 degrees Celsius, a minimum dissolved oxygen of 3 ppm and a water pH of 6.5 to 8.5.

The ideal location for developing this business is a farm located in the vicinity of growing mangrove plants. Generally pond land used is sandy mud. While the depth of the pond should not be less than 80 cm.

Traditional ponds that are usually used to breed milkfish or shrimp can be utilized.

2. Prepare the Equipment


Prepare the tools needed for the cultivation of soft shell crabs such as thermometer, pH meter and test kits to measure water quality.

3. Juvenile Selection


We must make sure the Juvenile we used are good to be cultivated into soft crabs. A good juvenile normally weight around 0.1 ounces to 0.5 ounces.

4. Create a Cage for Soft shell Crabs


Cage – form of boxes with the size of 15 cm x 15 cm x 20 cm. Then the boxes are placed on top the pond surface. Create a road made of bamboo between the order boxes to facilitate the farmers to make observe the soft shell crab when they change the skins.

Techniques on Farming Soft Shell Crab

How to breed soft crab is actually easy, but it takes special skill and experience to do it. Therefore, we need to understand the technique of breeding soft crab before practicing it. Cutting is the process of farming the soft shell crab. Cut the legs and claws of Juvenile crab; the process is done to stimulate the crab going into the molting stage (stage of softening of the shell).


Maintaining soft crabs is not done by spreading the crabs Juvenile carelessly into the pond, but we must place it into the cages after the cutting process done, then immerse it into the pond. The process of cutting until harvest will only last a short time, which is about 14 days, because if it is too long then the shell that has entered the softening stage can be harden again.The feed used for the enlargement of soft shell crabs in general like shellfish, trash fish, and pellets. The shellfish and half-dried trash fish were chopped up and given.

Techniques on Caring and Harvest Soft Shell Crab

The treatment that we must do is to keep the water circulation in order and control the pest. If the water circulation is not good, then many crabs will die. As for controlling pests we can spread environmentally friendly anti-pest drugs into the water. When the harvest comes, we pick up the soft crabs, then we soak them in fresh water for 30 minutes. After this, the harvest is ready to be distributed.

Success Tips and Marketing Strategies

Always keep the quality of soft crabs, separate between the good quality and the less good. This to make sure consumers are not disappointed when getting less good soft shell crab. However, for soft shell crab that quality is less good, you can still sell it at a lower price.

Preparation for Cooking: How to Clean Soft Shell Crab

Soft Shell Crab Farming
Article Name
Soft Shell Crab Farming
This article is about soft shell crab farming. I list out technique and tips to farm the soft shell crab.
Publisher Name
Jia Huo Seafood Trading
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10 thoughts on “Soft Shell Crab Farming

  1. Hi Kelvin, it is a nice and meaningful article which give a general idea about the breeding process of a soft shell mud crab. Do you mind to share 1. At what weight do you start breeding each mud crab (let’s say maybe start breeding at 100g and harvest about 300g?)
    2. Where do you get the source of crab seed?
    3. In average how is the price of the crab seed?

    Hope you hear from you soon 🙂

    1. Dear Heng,

      fyi, i do not farm mud crab but soft shell crab.

      Kelvin Too

      1. Hi Kelvin,

        Oic, I always thought soft shell crab can be any species of crab…

        Anyway, do you mind to share more about how and from where you get the baby soft shell crab? Mind to share me the supplier?


  2. Dear Sir,

    I myself is the supplier of baby crab aka soft shell crab.
    I have my own farm in Indonesia.
    My wife family is in seafood business in sulawesi – Palopo….

  3. Hi Kelvin,
    Can you please share if these soft shell crabs are they freshwater or salt water?
    Also, does indoor vertical farm works for soft shell crabs?
    Thank you.


    1. Dear Lee,

      These soft shell crab are from salt water – brackish water.
      Indoor farm is not easy as the death rate is very high.
      The best is in nature…..

  4. Hi kelvin,
    i am from india .i have my own own farming business in south india @andhra pradesh.please tell about market of soft shell crab.Namaste

    1. Hi Srinivas,

      Market of soft shell crab is big and potential.

  5. Hi Kelvin,

    May I know your soft shell crab is by natural molting or induced molting? Any grazing? What are the sizes?

    1. natural molting.
      Sizes are 5-7 pcs per kg.

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