一、引言罗非鱼是一个引进品种,有几个种,从六十年代引进中国大陆后推广十分迅速,随着养殖技术的发展,对品种的要求越来越高,目前较为有前途的品种是尼罗罗非鱼雌与奥利亚罗非鱼雄杂交仔代———奥尼鱼(俗称雄性鱼)。奥尼鱼具有生长快、体色艳、肉味美、易捕捞、不产小苗等优点 I. Introduction Tilapia is a species introduced, there are several species, since the introduction of mainland China in the 1960s to promote very rapidly, with the development of breeding technology, the demand for more and more varieties, the current more promising species Is the Nile tilapia female and Oreochromis male hybrid son generation --- Omni (commonly known as male fish). O’neill has fast growth, body color Yan, the meat delicious, easy to catch, do not produce seedlings and so on