The difference between swimming crab and hairy crab

Swimming crab belongs to crustacea, a member of the family Portunidae, which is an important breeding species in the coastal areas of China. Hairy crab generally refers to Chinese mitten crab, which is a famous delicacy in China. Gucheng Lake hairy crab is the most famous, as well as Taihu hairy crab, Yangcheng Lake hairy crab, Changdang Lake hairy crab and so on. Let's take a look at the difference between swimming crab and hairy crab.

The difference of families and genera between swimming crab and hairy crab

1. Swimming crabs: swimming crabs are marine arthropods belonging to the animal kingdom, phylum Arthropoda, subphylum crustacean, soft nail class, true soft nail subclass, Decapoda, Portunidae and swimming crab.

2. Hairy crabs: hairy crabs are freshwater arthropods belonging to the animal kingdom, Arthropoda, Crustacea, Crustacea, Coleoptera, Decapoda, Gastrodera, Arthropodae, Eriocheir sinensis and Eriocheir sinensis.

The difference between swimming crab and hairy crab

1. Swimming crab: swimming crab: Portunus trituberculatus, also known as gun crab, sea worm, water crab, door crab, small door, scorpion, cover fish, three-point crab, child crab, flying crab, tobacco cricket and so on.

2, hairy crab: hairy crab scientific name Chinese mitten crab, also known as river crab, hairy crab, clear water crab, hairy crab, crab and so on.

The difference of producing area between swimming crab and hairy crab

1. Swimming crabs: swimming crabs are distributed in Japan, Korea, Malaysia, the Red Sea and Chinese mainland in Guangxi, Guangdong, Fujian, Zhejiang, Shandong Peninsula, Bohai Bay, Liaodong Peninsula and other places.

2. Hairy crabs: the natural distribution areas of hairy crabs are mainly in northern Asia, western Korea and China. China is distributed from the mouth of the Yalu River in Liaoning in the north, to the Jiulong River in Fujian in the south and to the three Gorges Estuary in the west to Yichang, Hubei Province. with the artificial cultivation and release of crab seedlings, this crab has spread all over the country, but its quality is the most famous in Yangcheng Lake in the lower reaches of the Yangtze River and Shengfang Crab in Hebei Province.

Differences in habits between swimming crab and hairy crab

1. Swimming crab: swimming crab is in the sea, the survival rate is greatly reduced after leaving the environment with high salinity and high oxygen, the suitable salinity is 13: 38, the optimum growth salinity is 20: 35, the overwintering adaptation salinity is 28-35, the salinity is lower than 8 or higher than 38, stop feeding and activity, and all die a day later.

2. Hairy crabs: hairy crabs often live in mud banks of rivers, rivers and lakes, hide day and night, and feed on animal carcasses or grain. Every autumn, they grow more plump and often swim back to the offshore to breed. The eggs brought by the mother hatch between March and May of the following year. After many metamorphosis, the larvae develop into young crabs, then go back to the river and up the river, and continue to grow in fresh water.