Trade and resources: Welfare effects of the Lake Victoria fisheries boom

We examine the welfare implications of the Tanzanian fisheries boom resulting from Lake Victoria Nile perch exports during 1993–2008. In the literature, there are two opposing views on the effect of fish trade: some argue that fish trade can act as an engine of growth, while others contend that trade in fish negatively affects food security, local economies and incomes of the poor.

We  apply a micro level perspective using data from two years, the first from a  1993 World Bank household survey and the second, our own study from 2008, both covering about 520 households in the two regions, Mwanza and Mara, by  Lake  Victoria. Our results indicate increasing average income and a reduction in  the share of household expenditure on  food, both of which are positive indicators of welfare. For the poorest part of the population, urban areas had a substantial reduction in  the fraction below the basic needs level, while the change in  the rural areas was insignificant. However, growth in both areas was modest and inequality seems to have increased during the period. We conclude that there is more support in our data for a positive than a negative effect of the fish boom on the well-being of those residing in Mwanza and Mara.