How Do Crayfish Fry Reproduce? A Detailed Explanation of the Key Technical Points
Crayfish is also known as red swamp crayfish, red claw crayfish and freshwater crayfish. It is a freshwater economic shrimp species, widely welcomed by people for its delicious meat. Today we introduce how crayfish fry reproduce and the related technology.
1. Crayfish breeding technology
In April-May, when the water temperature reaches above 20°C, the parent crayfish begin to mate. The fertilized eggs hatch into young crayfish in the female's abdomen. Hatching takes 40-70 days, and at higher water temperatures they can hatch in about 30 days. When a large number of young crayfish appear in the breeding pond, the fry should be collected promptly and placed in a fry pond for intensive rearing.
2. How to select crayfish
1. Crayfish washed with shrimp washing powder often look very clean and have a bright color. But after being corroded, the crayfish's claws easily fall off, so eat them with caution.
2. To see whether crayfish live in clear water, first look at the back to see whether it is bright red and clean, then turn it over and look at the fuzz on its abdomen and the fine hairs on its claws. If these are white and neat, they were basically raised in clean water.
3. After all, crayfish are aquatic animals that eat decaying animal carcasses, so bacteria and toxins will only accumulate more and more in their bodies. Therefore, try to buy crayfish that have just grown up.
4. Before eating crayfish, look at the crayfish's body: if the tail is curled, it was alive before going into the pot. If the tail is straight, it was already dead before going into the pot.
5. If cooking crayfish yourself, it is recommended to soak them in clean water for 2-3 hours, then scrub them clean and eat them after cooking thoroughly at high temperature.
In recent years, crayfish have become an important economic aquaculture species in China. During commercial farming, escape must be strictly prevented, especially escape into pristine water bodies rarely visited by people. Their ecological competitive advantage over local species leads to destructive harm.