Management and monitoring of fisheries requires the availability of time series of economic indicators. Traditionally, wages and profits are monitored as they are considered key components for the understanding of fishermen behaviour and fleet dynamics. Furthermore, an ecosystem approach to fisheries can then be applied by integrating economic and ecological indicators and trying to highlight the interactions between these two components. Such an integrated analysis of the joint dynamics of the fish community and fleets has been undertaken for the Bay of Biscay where exploitation is characterized by a large diversity of species and fleets. Economic indicators were calculated for the time period of 2000-2007 using data collected by Ifremer under the Data Collection Regulation. Given the specific context of increasing fuel prices, results showed negative relationships between profits and wages and high differences in profitability between fleets, opposing coastal and larger vessels. These first results raise issues on the relevance of these traditional economic indicators and the definition of reference points to provide a diagnostic of the economic status of fisheries. This study also highlights the difficulties to estimate economic indicators given the weakness of the data sources and the specific structure of the fleet where most of the vessels are less than 10 meters. Finally, the use of data made available under the DCR for such integrated analysis is discussed.