A French anchovy fishery takes place in the Bay of Biscay all along the year from the Spanish border to the west end of Brittany. This fishery is essentially based on pelagic trawling carried out on the continental shelf. Each year, a migration of the fishery may be observed from the south of the area in spring to the north of the area in autumn. A database of this fishery is compiled and maintained since 1983 at Ifremer. Concurrently, scientific surveys are carried out each year in spring for an acoustic estimate of anchovy biomass. The logbooks provide a geographical distribution of marketable anchovy while acoustic data provide the distribution of the whole biomass present on the platform.