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

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Summary for Latvia (2017)
Total Production (t) Percent of total
fish production % Estimated Numbers
(millions)
All species with an EMW
(Estimated mean weight)             707 88 <1 - 2

All species without an EMW             101 13 Not estimated

Total fish production             808 100

out of total aquaculture production             808

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Data for Latvia (2017)
Species Production (t)¹ Estimated
mean weight²
(EMW) g EMW id² Estimated
Numbers
(millions)³
Common carp             606 500-2,500 57 <1 - 1

Crucian carp               9 150-400 62 <1

Freshwater fishes nei              43 Not estimated⁴

Northern pike              10 Not estimated⁴

Pike-perch               4 Not estimated⁴

Rainbow trout              92 210-5,000 155 <1

Sturgeons nei              42 Not estimated⁴

Tench               3 Not estimated⁴

Totals by estimate type:

Production (t) Percent of
total fish
production % Estimated Numbers
(millions)

   Single species with an EMW             707 88 <1 - 2

Totals for species with an EMW             707 88 <1 - 2

Totals for species without EMW             101 13 Not estimated⁴

Total fish production             808 100

out of total aquaculture production             808

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.

Species	Production (t)¹	Estimated mean weight² (EMW) g	EMW id²	Estimated Numbers (millions)³
Common carp	606	500-2,500	57	<1 - 1
Crucian carp	9	150-400	62	<1
Freshwater fishes nei	43			Not estimated⁴
Northern pike	10			Not estimated⁴
Pike-perch	4			Not estimated⁴
Rainbow trout	92	210-5,000	155	<1
Sturgeons nei	42			Not estimated⁴
Tench	3			Not estimated⁴

Totals by estimate type:
	Production (t)	Percent of total fish production %		Estimated Numbers (millions)
Single species with an EMW	707	88		<1 - 2
Totals for species with an EMW	707	88		<1 - 2
Totals for species without EMW	101	13		Not estimated⁴
Total fish production	808	100
out of total aquaculture production	808