There are about 10 -20 crayfish per catty. This mainly depends on the size of the crayfish. If it is a little bigger, it is estimated that there are about 10 a catty.

In the crayfish pond, hay used for wintering and freezing, water peanuts, etc., should be fished out after the spring to prevent the water temperature from rising and rotting, and fresh aquatic plants should be supplemented if possible, which can be used as crayfish bait and provide a hidden place for crayfish. If there are no fresh aquatic plants, you can put a certain amount of sterilized artificial concealment into the pond, such as bamboo tube, dead poplar leaves, phoenix leaves and so on.

Extended data:

Shrimp rearing of crayfish

1, Thoroughly clean the pond: 20-30 days before the shrimp fry are released, it is necessary to drain the pond water, clean up excessive silt, repair the dam of the pond, and use 75 kilograms of bleaching powder per mu to thoroughly disinfect the pond.

2. Apply sufficient base fertilizer: 500-600 kg of livestock and poultry manure is applied per mu to cultivate insects and cladocera organisms and provide bait for shrimp seedlings.

3. Good aquatic plants should be planted: some aquatic plants such as algae should be planted in the aquaculture pond, and the planting area should account for 2/3 of the shrimp pond area. At the same time, set up nets or put some bamboo tubes and plastic buckets to provide lobster with a place to rest, molt and hide.