A study issued yesterday [Wednesday] by the Pew Initiative on Food and Biotechnology claims that the US government is ill equipped to judge the risks that genetically modified fish pose to the environment. The Pew Initiative, a non-profit-making organisation, released its findings just as the US government is deciding whether to give the green light to a variety of salmon genetically manipulated to grow at double the normal rate. Waltham, Massachusetts-based Aqua Bounty Farms has sought approval to sell GM Atlantic salmon.