Exports of Nile Perch from Lake Victoria do not appear to be benefiting local vulnerable populations in any way. Hubert Sauper made a four-year thorough enquiry in Tanzania on the shores of Lake Victoria. As in a police investigation, for two hours, he dissects all the consequences of the development of the Nile perch, and its export to Europe and other developed countries. Without any comment, he lets all those involved in the system speak, from those who make profits out of it (the European Union exporters, African politicians) to the most deprived (fishermen, women, children). He shows how globalization generates huge riches based on the Nile perch, but also how it makes poverty worse and makes more vulnerable the plight of thousands of inhabitants who try to make a living out of the resources of the lake.