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Estimated numbers of individuals in aquaculture production (FAO) of selected fish species 2017

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Data for Rainbow trout (Oncorhynchus mykiss) in 2017
CountryProduction (t)1Estimated
mean weight 2,5
(EMW) g
EMW id2Estimated Numbers
(millions)3
Iran (Islamic Rep. of)        167,830210-5,000155 34 - 799
Turkey        106,733257-1,380155 77 - 415
Chile         76,971210-5,000155 15 - 367
Norway         66,9021,200-5,000155 13 - 56
Peru         54,878210-5,000155 11 - 261
China         41,460210-5,000155 8 - 197
Italy         35,000278-1,462155 24 - 126
Russian Federation         33,806210-5,000155 7 - 161
Denmark         33,036597-2,686155 12 - 55
France         26,100556-2,528155 10 - 47
United States of America         19,845210-5,000155 4 - 95
Spain         16,902428-2,036155 8 - 40
Poland         14,481210-1,200155 12 - 69
Finland         13,5801,200-5,000155 3 - 11
United Kingdom         13,041530-2,429155 5 - 25
Sweden         11,3611,200-5,000155 2 - 9
Mexico          9,499210-5,000155 2 - 45
Germany          8,452373-1,826155 5 - 23
Colombia          6,845210-5,000155 1 - 33
Ecuador          6,000210-5,000155 1 - 29
Japan          4,797210-5,000155 1 - 23
Iceland          4,6281,200-5,000155 1 - 4
Korea, Republic of          3,439210-5,000155 1 - 16
Bulgaria          3,226210-5,000155 1 - 15
Bosnia and Herzegovina          2,962210-5,000155 1 - 14
Brazil          2,000210-5,000155 <1 - 10
Greece          1,989210-1,200155 2 - 9
Romania          1,840210-5,000155 <1 - 9
Bolivia (Plurinat.State)          1,650210-5,000155 <1 - 8
South Africa          1,550210-5,000155 <1 - 7
Argentina          1,367210-5,000155 <1 - 7
Austria          1,302210-5,000155 <1 - 6
Switzerland          1,300210-5,000155 <1 - 6
Lesotho          1,299210-5,000155 <1 - 6
Canada          1,072210-5,000155 <1 - 5
Slovakia          1,019210-5,000155 <1 - 5
Lebanon          1,000210-5,000155 <1 - 5
Serbia            918210-5,000155 <1 - 4
Costa Rica            900210-5,000155 <1 - 4
India            850210-5,000155 <1 - 4
Kyrgyzstan            750210-5,000155 <1 - 4
Slovenia            737210-5,000155 <1 - 4
Estonia            702210-5,000155 <1 - 3
Montenegro            692210-5,000155 <1 - 3
Portugal            680652-2,895155 <1 - 1
Ireland            647705-3,100155 <1 - 1
Kenya            618210-5,000155 <1 - 3
Albania            600210-5,000155 <1 - 3
Belarus            530210-5,000155 <1 - 3
Czechia            507210-1,200155 <1 - 2
Israel            400210-5,000155 <1 - 2
Croatia            367210-1,200155 <1 - 2
Ukraine            344210-5,000155 <1 - 2
Nepal            315210-5,000155 <1 - 2
Azerbaijan            312210-5,000155 <1 - 1
Georgia            180210-5,000155 <1 - 1
Afghanistan            150210-5,000155 <1 - 1
Papua New Guinea            150210-5,000155 <1 - 1
Uzbekistan            130210-5,000155 <1 - 1
Guatemala            128210-5,000155 <1 - 1
Lithuania            106210-5,000155 <1 - 1
Morocco            100210-5,000155 <1
Latvia             92210-5,000155 <1
Taiwan Province of China             82210-5,000155 <1
Venezuela, Boliv Rep of             80210-5,000155 <1
Zimbabwe             80210-5,000155 <1
Malawi             56210-5,000155 <1
Hungary             54210-5,000155 <1
Netherlands             50210-5,000155 <1
Cyprus             44210-5,000155 <1
Bhutan             20210-5,000155 <1
Panama             20210-5,000155 <1
Tajikistan             10210-5,000155 <1
Tanzania, United Rep. of             10210-5,000155 <1
Australia              8210-5,000155 <1
Réunion              5210-5,000155 <1
Ethiopia              2210-5,000155 <1
Total        811,590 268 - 3,072

Estimated by A Mood and P Brooke, Sep 2019.   Updated Nov 2019 for Rainbow trout, see note 5 below.


Notes
1. Source of production tonnage: FAO FishStat "Aquaculture Production (Quantities and values) 1950-2017 (Release date: 25th March 2019)".
2. Source of estimated mean weights (EMWs) : as for our earlier estimate, see Estimating the Number of Farmed Fish Killed in Global Aquaculture Each Year.
3. The estimated numbers are calculated as the production tonnage divided by estimated mean weight (EMW) where a mean weight has been estimated for the species.
4. The fish numbers for species without an estimated mean weight (EMW) have not been estimated for each individual species or country.
5. For rainbow trout, a weighted estimated mean weight has been used based on the proporation of small rainbow trout (< 1200g) and large rainbow trout (> 1200g) produced in the country, if available. See FEAP data.
(The estimated mean weight (EMW) for rainbow trout is 210-5000g and the EMWs for small and large rainbow trout are therefore respectively 210-1200g and 1200-5000g.)
Global estimated numbers for rainbow trout based on these weighted estimated mean weights total 268-3072 million individuals as compared to 162-3865 million based on the (unweighted) estimated mean weight of 210-5000g.