This report presents an empirical analysis of the dynamics of the community of Béninois (Popo) migrant fishermen in Pointe-Noire. The treatment of historical data from the period prior to their establishment 30 years ago, as well as from their time in Pointe-Noire, throws new lights on the causes behind their migration and the establishment of a highly capital intensive and market integrated production system. It also reveals that considerable changes in terms of organization and external relations have taken place. These changes are analysed and explained with reference to changing conditions for its members and to the intricate combination of traditional and modern values on which the community is based.