2, pike crabs in Japan, North Korea, the Malay Archipelago, the Red Sea is also distributed.
Two, the origin of the environment, 1, pike crabs adapt to the water temperature of 8-31 ℃, the optimal growth of the water temperature of 15-26 ℃, the water temperature of different crab activities in the feeding situation is also different.
2. The salinity of the water is between 20-35, and the salinity is between 28-35 during the wintering period. When the salinity is lower than 8 or higher than 38, the pike will stop feeding and activity.
3, suitable for the water body ph value of 7.5-8, dissolved oxygen in the water can not be less than 2 mg / liter, chemical oxygen consumption is generally not more than 12 mg / liter.
Three common species 1, the three warthog pike crab (1) is China's important coastal economic crabs and breeding species, relatively rapid growth, breeding efficiency is very high.
(2) in 3-5 meters of the deep sea floor life and reproduction, winter life in the 10-30 meters of the deep sea, suitable for growth in the water salinity 26-32, water temperature 22-28 ℃, ph7-9 between.
2, the red star pike crab (1) lives in the warm water bottom, in our country is mainly distributed in guangxi, guangdong, fujian, taiwan and so on, its back has three obvious wart-like bulge.
(2) The living environment is seawater, commonly found in the muddy sandy seabed of 10-30 meters.
3, distant sea pike crab (1) in China is mainly distributed in Guangxi, Guangdong, Fujian, Taiwan, Zhejiang and other places, the male crab each step foot of the anterior joints, knuckles are dark blue.
(2) The living environment is seawater, commonly found in 10-30 meters of muddy sandy seabed.