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