Fig. 4.

Global nutritional dependence and catch rates from inland fisheries relative to national GDP per capita. (A) Dependence on fish for dietary animal protein occurs at lower GDP for freshwater fisheries than aquaculture or marine fisheries. Nutritional efficiency—the number of people whose animal protein consumption is met per ton of fish protein eaten—is highest for freshwater fish (Inset). (B) Catch per capita varies widely with GDP, as does the proportion of animal protein derived from freshwater fish (indicated by bubble size; 0–54% across 154 nations) and children <5 y of age who are underweight (indicated by bubble shading; 20–45% across 90 nations; open bubbles indicate no data). Economic and nutritional data were drawn from the FAO (11, 46) and World Bank (54).