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

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Summary for Tanzania, United Rep. of (2017)
TotalProduction (t)Percent of total
fish production %		Estimated Numbers
(millions)
All species with an EMW
(Estimated mean weight)		         11,350100 13 - 41
Total fish production         11,350100
out of total aquaculture production         19,602

   

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Data for Tanzania, United Rep. of (2017)
SpeciesProduction (t)1Estimated
mean weight2
(EMW) g		EMW id2Estimated
Numbers
(millions)3
Milkfish            340250-5001221
Nile tilapia          9,000250-800129 11 - 36
North African catfish          2,000500-1,500132 1 - 4
Rainbow trout             10210-5,000155 <1
 
Totals by estimate type:
Production (t)Percent of
total fish
production %		Estimated Numbers
(millions)
   Single species with an EMW          11,350100 13 - 41
Totals for species with an EMW         11,350100 13 - 41
Total fish production         11,350100
out of total aquaculture production         19,602

Estimated by A Mood and P Brooke, Sep 2019


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.