如何鉴别蟹种质量，挑优质蟹苗，是提高养蟹效益的关键。一、蟹种鉴别1、蟹种品系的鉴别我国有蟹类600余种，但适合淡水养殖的仅有几种，现在广大养殖的是中华绒螯蟹，它生长较快，个体也大，营养价值高，养殖效益好。中华绒螯蟹蟹种体色为青灰色，腹部为银白色，体型为不规则 How to identify the quality of crabs, pick the best crabs, is the key to improving the efficiency of crabs. First, the identification of crabs 1, the identification of crab species Department of China has more than 600 species of crabs, but suitable for freshwater aquaculture only a few, now the majority of breeding is Chinese mitten crab, it grows fast, the individual is large, nutrition High value, good breeding efficiency. The mitten crab body color is blue-gray, the abdomen is silver-white, the body is irregular