目前罗非鱼已是我国重要的养殖鱼类,也是我国重要的出口创汇水产品之一,特别是在广东、广西、福建、海南等地,罗非鱼养殖已形成产业化格局。在罗非鱼养殖中,品种起着关键的作用,决定着养殖效益,因此,罗非鱼品种选育已成为直接关系到罗非鱼产业发展的重中之重,受到广泛重视。在 At present, tilapia is an important cultured fish in China and one of the important foreign exchange earning aquatic products in our country. Especially in Guangdong, Guangxi, Fujian and Hainan, tilapia farming has formed an industrialized pattern. Therefore, the breeding of tilapia has become a top priority for the development of tilapia industry, which has received extensive attention. in