A bar chart showing freshwater use per kilogram of farmed seafood, with silver/bighead fish requiring the most water and bivalves the least.

Bar chart illustrating the freshwater footprint of various farmed seafood types compared to chicken.

Freshwater use per kilogram of farmed seafood Based on a meta-analysis that includes data from 1690 fish farms. This is given per kilogram of edible weight. Chicken – the lowest-impact meat – is shown for comparison. Our World in Data Silver/bighead (farmed) 9.28 m³ Carp (farmed) 3.52 m³ Catfish (farmed) 2.09 m³ Tilapia (farmed) 1.23 m³ Chicken 0.45 m³ Other marine fish (farmed) 0.4 m³ Other freshwater fish (farmed) 0.36 m³ Milkfish (farmed) 0.28 m³ Shrimp (farmed) 0.22 m³ Salmon (farmed) 0.16 m³ Trout (farmed) 0.11 m³ Seaweed (farmed) 0 m³ Bivalves (farmed) 0 m³ Data source: Gephart et al. (2021). OurWorldinData.org/fish-and-overfishing | CC BY