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

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Data for Parachanna snakeheads nei (Parachanna spp) in 2017
CountryProduction (t)1Estimated
mean weight 2
(EMW) g		EMW id2Estimated Numbers
(millions)3
Cameroon              <1 Not estimated4
Nigeria          2,612 Not estimated4
Total          2,612 Not estimated

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.