In response to the request of Tilapia Zebra GIFT line was added to the aquaculture Research Institute 1 from the Philippines and is used as the initial material for the program bred according to the method, tilapia are bred to grow, adding 16.6% (Citizen Nguyen et al, 2001). Through 6 generations bred had growth increased by 36% in comparison with the original type GIFT fish (NOVIT 4). Tilapia bred expressing superiority than other tilapia strains available in the locality of growth, especially when rearing in freshwater environments. The study of Le Thanh Hai (2007) showed that the growth of on-line NOVIT 4 taller than the GIFT, is the next line. Thus, the growth of Tilapia Unisexual male is created by hormone treatment method the line 4 and line NOVIT GIFT section would show superior growth compared to fish streams Free
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