FishBase is a global biodiversity information system on finfishes. Its initial goal to provide key facts on population dynamics for 200 major commercial species has now grown to having a wide range of information on all species currently known in the world: taxonomy, biology, trophic ecology, life history, and uses, as well as historical data reaching back to 250 years. At present, FishBase covers >33,000 fish species compiled from >52,000 references in partnership with >2,000 collaborators: >300,000 common names and >55,000 pictures. Our website gathers more than 700,000 visits monthly. The breadth and depth of information in the database, combined with the analytical and graphical tools available in the web, cater to different needs of diverse groups of stakeholders (scientists, researchers, policy makers, fisheries managers, donors, conservationists, teachers and students). Its various applications aim for sustainable fisheries management, biodiversity conservation and environmental protection.