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

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Summary for Spain (2017)
TotalProduction (t)Percent of total
fish production %		Estimated Numbers
(millions)
All species with an EMW
(Estimated mean weight)		         60,36291 91 - 153
All species without an EMW          6,2299Not estimated
Total fish production         66,591100
out of total aquaculture production        311,032

   

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Data for Spain (2017)
SpeciesProduction (t)1Estimated
mean weight2,5
(EMW) g		EMW id2Estimated
Numbers
(millions)3
European seabass         17,656400-50072 35 - 44
Gilthead seabream         17,005300-40081 43 - 57
Rainbow trout         16,902428-2,036155 8 - 40
Turbot          8,771700-2,000219 4 - 13
Meagre          3,524 Not estimated4
Atlantic bluefin tuna          1,030 Not estimated4
Senegalese sole          1,013 Not estimated4
European eel            331 Not estimated4
Blackspot(=red) seabream            142 Not estimated4
Mullets nei             61 Not estimated4
Siberian sturgeon             43 Not estimated4
Tench             38 Not estimated4
Adriatic sturgeon             28 Not estimated4
Atlantic salmon             243,614-8,43421 <1
Greater amberjack             11 Not estimated4
Sea trout              6 Not estimated4
Common carp              2500-2,50057 <1
Nile tilapia              1250-800129 <1
White seabream              1 Not estimated4
Danube sturgeon(=Osetr)              <1 Not estimated4
Spotted seabass              <1 Not estimated4
 
Totals by estimate type:
Production (t)Percent of
total fish
production %		Estimated Numbers
(millions)
   Single species with an EMW          60,36291 91 - 153
Totals for species with an EMW         60,36291 91 - 153
Totals for species without EMW          6,2299 Not estimated4
Total fish production         66,591100
out of total aquaculture production        311,032

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.