Updated daily
View our work on COVID-19 vaccinationsHealth of fish stocks by fish group
Fish stocks are measured by their biomass: the number of individuals multiplied by their mass.
Here it's measured as the biomass of a fish stock divided by the biomass at its maximum sustainable yield – the level at which we can catch the maximum amount of
fish without a decline in fish populations. A value of one maximises fish catch without decreasing fish populations.
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1970
2016