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

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Data for Channel catfish (Ictalurus punctatus) in 2017
Country Production (t)¹ Estimated
mean weight²
(EMW) g EMW id² Estimated Numbers
(millions)³
China         227,454 340-680 45 334 - 669

United States of America         149,881 340-680 45 220 - 441

Russian Federation           1,082 340-680 45 2 - 3

Mexico           1,016 340-680 45 1 - 3

Italy             300 340-680 45 <1 - 1

Bulgaria              19 340-680 45 <1

Total         379,752 558 - 1,117

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.

Country	Production (t)¹	Estimated mean weight² (EMW) g	EMW id²	Estimated Numbers (millions)³
China	227,454	340-680	45	334 - 669
United States of America	149,881	340-680	45	220 - 441
Russian Federation	1,082	340-680	45	2 - 3
Mexico	1,016	340-680	45	1 - 3
Italy	300	340-680	45	<1 - 1
Bulgaria	19	340-680	45	<1
Total	379,752			558 - 1,117