目前,河蟹主要有长江水系河蟹、辽河水系河蟹和甄江水系河蟹等品种。在养殖效益上,上市的价格,长江水系河蟹是辽河水系河蟹的3—6倍,是甄江水系河蟹的5—10倍;每亩的平均效益,长江水系河蟹是辽河水系河蟹的4—8倍,是甄江水系河蟹的6—12倍。 At present, the main crab crabs of the Yangtze River, Lv River crab and Zhenjiang River Crab and other varieties. In terms of breeding efficiency, the price of listing, the crabs of the Yangtze River water system is 3-6 times that of the crabs in the Liaohe River system and 5-10 times that of the crabs in the Zhenjiang River system. The average benefit per acre is 4-8 for the crabs of the Liaohe River system Times, is 6-12 times the Zhenjiang River crabs.