This is because the result of any such comparison among strains are valid only for the environment (location, time, and farming system) where they are obtained . A wide range of differences in performance between GIFT and nonGIFT tilapia in Asia is to be expected, given the region’s history of tilapia movement and variable attention to bloodstock management, as well as local adaptation of formed tilapia strains. Despite these complexities, the developers of GIFT demonstrated that selective breeding produced progressively faster growing generation of nile tilapia, and that application of genetics to tilapia farming – ad by inference to tropical aquaculture in general – can result in substantial and rapid development of improved Nile tilapia strains