‘Greenweight’ is the weight of any fish, aquatic life or seaweed before any processing commences.
In overseas jurisdictions, greenweight is
sometime referred to as ‘roundweight’
In New Zealand, under the Fisheries
Act 1996, all references to the weight
of fish must be in greenweight. When
commercial fishers complete monthly
harvest returns to report on their catch,
the weights they record must be in
Where fish are processed into landed
states – such as headed and gutted,
dressed or fillets – it is necessary to use
conversion factors. This is a ratio that
converts the processed weight of the fish
back to greenweight. Conversion factors
are usually set on the basis of sampling
data that is collected by Ministry of
Fisheries observers working on board
deepwater factory vessels.
The conversion factors are made
public through the New Zealand Gazette,
the newspaper of the New Zealand
Government that is published each week.