在第三世界,矮化生长是限制罗非鱼养殖生产的主要因子之一。目前,人们已采用了好几种方法来克服罗非鱼繁殖期早的阻滞性影响。采用性激素逆转法,人工性鉴别和品种杂交已能建立起全雄的罗非鱼群体。但是,放养掠食性鱼类控制数量,高密度养殖或网箱养殖等管理技术仍难以控制罗非鱼的 In the third world, dwarf growth is one of the major factors that limit tilapia farming. At present, several methods have been adopted to overcome the retarding effect of early tilapia breeding season. The use of sex hormone reversal method, artificial identification and breed has been able to establish all-male tilapia population. However, managerial techniques such as stocking of predatory fish, high-density farming or cage culture still have difficulty controlling tilapia