1、规格要求：将准备出池的蟹苗随机捞出一部分，沥去水，称取2克，逐只过数，凡规格达每公斤15－18万只的，说明蟹苗质量较好，可以购买，如果苗龄过短，个体较小，每公斤超过20万只的，不宜购买。2、体质要求：要求蟹苗体质健壮，规格整齐，游泳活泼，爬行敏捷。检查时，可将 1, Specifications: The crab will be prepared to remove some of the pool randomly, drain to the water, weighed 2 grams, by only a few, where the specifications of 15-18 million per kg, indicating that the quality of crabs better, Can be purchased, if the seedling age is too short, the individual smaller, more than 200,000 per kilogram, should not be purchased. 2, physical requirements: strong crab body requirements, neat specifications, lively swimming, crawling agile. Check, can be