Estimated trends in fish stock biomass, by fishing areas

Fish stock biomass is a function of biological characteristics such as abundance and weight and can indicate the status of a fish stock when measured against reference values. This is a model-based indicator that is computed using results from single-species quantitative stock assessments. It shows the median value of fish stock biomass relative to 2003. The full time series is updated every year, sometimes including new stocks due to newly available quantitative assessments which can result in small differences from one release year to the next.