Table 1 Wild fish used in aquaculture feeds for 11 commonly farmed fed fish and shellfish

From: A 20-year retrospective review of global aquaculture

Farmed fish and crustaceansa Total production (kilotons)a Percentage produced with compound feed (by weight)a Average FCRb Percentage fishmeal in feed (wild) Percentage fishmeal in feed (trimmings) Percentage fish oil in feeds (wild) Net wild fish used (kilotons) FIFOc in 2017
Fed carps 13,986 57 1.7 0.4 0.6 0 0 0.02
Tilapia 5,881 92 1.7 0.5 1.5 0 0 0.03
Shrimp 5,512 86 1.6 5 5 2 3,034 0.82
Catfishes 5,519 81 1.3 0.5 1.5 0 0 0.02
Marine fish 3,098 80 1.7 8 6 3 2,528 1.25
Salmon 2,577 100 1.3 6 6 6 4,020 1.87
Freshwater crustaceans 2,536 60 1.8 5 7 1 548 0.43
ODF fish 2,491 43 1.7 3 8 2 728 0.38
Milkfish 1,729 55 1.7 2   0 0 0.07
Trout 846 100 1.3 5 4 6 1,320 1.82
Eel 259 100 1.5 25 10 5 389 2.98
Total 44,424       12,566 0.28
  1. aCategories from Tacon3, Table 4. ODF, other diadromous and freshwater fish. The calculations by the authors are based on data from the following sources: production, share of production and FCR were obtained from the FAO2 and Tacon3; inclusion of fishmeal and fish oil data were from the National Resource Council report on Nutrient Requirements for Fish and Shrimp54, Naylor et al.59, and Ytrestøyl et al.55; and analyses of fish trimmings in fishmeal were from Green (SeaFish)47 and Leadbitter44. We use conservative estimates of 24% fishmeal and 10% fish oil recovery from wild fish. bFCR is defined as the estimated average species-group economic FCR (total feed fed/total species group biomass increase). Economic FCR (also known as EFCR)3,55,59 is defined as total feed fed/total species group biomass increase and includes waste, escapes and other non-ingested feeds55cFIFO, wild fish inputs to fed fish output. See Extended Data Table 3 for more information.