Methods, standards and classifications

In response to a growing demand for high-quality and internationally-comparable statistics, FAO develops, implements and promotes methods and standards to guide national data producers in generating and using sound statistics. In particular, the Organization is committed to provide national statistical systems with internationally recognized definitions, concepts and classifications as well as methodological guidance for the production of high quality statistics related to food and agriculture.

Methods

Methods

FAO develops methods to guide national data producers in generating and using sound statistics. The FAO Statistics Resource Repository presents statistics-oriented research on topics related to FAO's mandate. It provides guidelines, handbooks, working papers and training materials for statisticians, researchers and academics.


 

Corporate Standards

Data and Statistical Standard Series

The FAO Data and Statistical Standard Series covers topical issues for data and statistics and provides statisticians with the guidance needed to ensure that timely and high-quality data and statistics are produced and disseminated.


 

Classifications

Caliper - Statistical Classifications

Consult Caliper, an FAO tool for the dissemination of statistical classifications, and browse, search, download and query classifications and correspondences.

 

List of classifications relevant to FAO's mandate

FAO maintains information on the main classifications owned by the Organization, the UN Statistical Division and other international organizations that are relevant to its mandate.

Fishery and Aquaculture

General Information

Status

Operational

Website

https://www.fao.org/cwp-on-fishery-statistics/handbook/general-concepts/main-water-areas/en/ and https://www.fao.org/fishery/en/area/search

Custodian

Food and Agriculture Organization of the United Nations (Secretariat of the Coordinating Working Party on Fishery Statistics)

Availability

Arabic, Chinese, English, French, Russian and Spanish

Purpose of the Classification

Statistical Domain

Fishery and aquaculture statistics

Purpose

For statistical purposes, particularly for reporting fishery and aquaculture production. FAO Major Fishing Areas for Statistical Purposes are arbitrary areas, the boundaries of which have been determined in consultation with international fishery agencies. The rationale of the FAO Major Fishing Areas has been that the areas should, as far as possible, coincide with the areas of competence of other fishery commissions when existing. This system facilitates comparison of data, and improves the possibilities of cooperation in statistical matters in general.

Main Applications

To classify capture fisheries and aquaculture production by areas where the fish is caught or harvested. When establishing new regional fishery bodies, FAO Major Areas often becomes a basis to determine the scope of their jurisdiction.

Main Users

FAO, national fishery and aquaculture statistical offices, international organizations, regional fisheries bodies.

Methodology

Scope

Global

Concept Being Classified

Geographic areas

Statistical Units

Fishing area

Classification Structure

Level

Level Name

Code Format

Number of Items

Level 1

Major Area

xx

26 items

Level 2

Subarea

xx.x

n/a items

Level 3

Divisions

xx.x.x

n/a items

Level 4

Subdivisions

xx.x.xx

n/a items

Criteria for Definition of Levels

The FAO Major Fishing Areas for Statistical Purposes are arbitrary areas the boundaries of which were determined in consultation with international fishery agencies on the basis of various considerations, including: the boundary of natural regions and the natural divisions of oceans and seas; the boundaries of adjacent statistical fisheries bodies that had already been established in intergovernmental conventions and treaties; existing national practices; national boundaries; the longitude and latitude grid system; the distribution of the aquatic fauna; the distribution of resources and the environmental conditions within an area.

For statistical purposes, 26 major areas currently exist. These comprise: seven major inland areas covering the inland waters of the continents and 19 major marine areas covering the waters of the Atlantic, Indian, Pacific and Southern Oceans, with their adjacent seas. Until 1990, another area existed for inland area “Former USSR area”.

Some FAO major marine areas are further divided into subareas, divisions and subdivisions, according to the needs of the regional fishery management bodies responsible for managing the fisheries and fishery resources of the individual FAO Major Areas. These systems of subareas, divisions and subdivisions have been successfully developed and implemented by relevant regional fishery bodies; any modifications are duly reported to CWP.

Revision Information

Chronology of revisions/versions of the classification:

Website:
https://www.fao.org/cwp-on-fishery-statistics/handbook/general-concepts/main-water-areas/en/ and https://www.fao.org/fishery/en/area/search

Official Adopting Entity:
Coordinating Working Party on Fishery Statistics

Coordinating Entity:
Coordinating Working Party on Fishery Statistics

Documenting Website:
https://www.fao.org/fishery/area/search/en

Reason for Latest Revision:
Member requested revisions

Major Changes:
No major changes

Contact Information

Coordinating Working Party on Fishery Statistics
FAO Statistics and Information Branch (FIAS), Fisheries Division (NFI)
Contact Name:
Stefania Vannuccini
Email:
[email protected]
Address:
Viale delle Terme di Caracalla, 00153 Rome, Italy

General Information

Status

Operational

Website

https://www.fao.org/fishery/collection/asfis/en

Custodian

Food and Agriculture Organization of the United Nations (Secretariat of the Coordinating Working Party on Fishery Statistics)

Year Adopted

2000

Year Published

First version (2002); Last version (2019)

Availability

Arabic, Chinese, English, French, Russian and Spanish

Purpose of the Classification

Statistical Domain

Fishery and aquaculture statistics

Purpose

Please note that this is a list, not a classification. ASFIS is a list of species used to classify fisheries and aquaculture data at either the species, genus, family or higher taxonomic levels in statistical categories referred to as species items.

Main Applications

Classifying aquaculture and fisheries data by species items. Used by countries, regional and international organizations when reporting and exchanging information.

Main Users

FAO, national fishery and aquaculture statistical offices, international organizations, regional fisheries bodies.

Methodology

Scope

To classify fisheries and aquaculture species items by an ISSCAAP code, a taxonomic code, a 3-alpha code, a scientific name, taxonomic classification at family and at a higher taxonomic level.

Concept Being Classified

Goods, aquatic animals

Statistical Units

Species item

Relationship to Other International Classifications

Related To:
International Standard Statistical Classification for Aquatic Animals and Plants (ISSCAAP)

Classification Structure

Level

Level Name

Code Format

Number of Items

Level 1

Scientific Name+English Name+French Name+Spanish Name+Arabic Name+Chinese Name+Russian Name

ISSCAAP code: 123 + 3-alpha code: ABC
+ taxonomic code: 1234567890
+taxonomic information

12771 items (2019 version)

Criteria for Definition of Levels

ASFIS is a list of species that includes 12 771 species items (2019 version), selected on the basis of their interest or relation to fisheries and aquaculture. For each species item stored in a record, the following descriptors are available:

  • 3-alpha code has been developed by the CWP and it is assigned to a species item permanently (it is, thus, a permanent reference to that species item). The 3-alpha code is issued only for species of commercial significance and it is widely used for exchange of data among fisheries agencies and for national submission of data to FAO and other agencies. FAO is the depository agency for the 3-alpha codes: requests for information and for the allocation of a 3-alpha code to new species should be addressed to FAO.
  • ISSCAAP code classifies aquatic commercial species on the basis of their taxonomic, ecological and economic characteristics. More information is available under ISSCAAP classification.
  • Taxonomic code is a ten-digit numerical code covering the following information: main groupings, orders, families, genera and species. In a few special cases, three additional digits have been added.
  • Taxonomic information related to scientific name, author(s), family, and higher taxonomic classification.

Revision Information

Chronology of revisions/versions of the classification:

Title or version number:
ASFIS 2019

Website:
https://www.fao.org/fishery/collection/asfis/en

Official Adopting Entity:
Food and Agriculture Organization of the United Nations (FAO)

Coordinating Entity:
FAO - Statistics and Information Branch (FIAS), Fisheries Division (NFI)

Next Review:
2020. An updated version of the ASFIS List is released each year at about April-May after the annual closure of the FAO capture and aquaculture production databases.

Reason for Latest Revision:
Additions of new species for which statistics became available and/or due to changes in the scientific names and taxonomic classifications proposed in the scientific literature by taxonomists.

Major Changes:
Minor changes are generally implemented in every annual release. The approach followed is that in case of changes of scientific names and creation of new species proposed in the scientific literature by taxonomists, they are included in the ASFIS list only when such changes have been recognized by the majority of taxonomists and are well consolidated among people dealing with fishery matters and, in particular, fishery statistics

Contact Information

Food and Agriculture Organization of the United Nations
Fisheries Division (NFI)
Contact Name:
Stefania Savoré
Email:
[email protected]
Website:
http://www.fao.org/cwp-on-fishery-statistics/handbook/general-concepts/identifiers-for-aquatic-animals-and-plants/en/
Fax:
+39 06 57052476
Address:
Viale delle Terme di Caracalla, 1

00153 Rome, Italy

General Information

Status

Operational

Website

https://www.fao.org/fishery/static/ASFIS/ISSCAAP.pdf

Custodian

Food and Agriculture Organization of the United Nations (Secretariat of the Coordinating Working Party on Fishery Statistics)

Year Adopted

1969

Year Published

2001

Availability

English, French and Spanish

Purpose of the Classification

Statistical Domain

Fishery and aquaculture statistics

Purpose

ISSCAAP classifies aquatic commercial species into 50 groups and nine divisions on the basis of their taxonomic, ecological and economic characteristics.
Currently, all species in the ASFIS List are classified by ISSCAAP group, with the exception of marine birds and snakes.

Main Applications

For aggregating aquatic species on the basis of their taxonomic, ecological and economic characteristics.
It also serves as a) a framework for compilation and presentation of statistics on fishery and aquaculture production and trade; b) aggregates and elements for analyses; c) a set of elements (or building blocks) suitable for rearrangement or expansion for special studies or for special purpose classification systems

Main Users

FAO, national fishery and aquaculture statistical offices, international organizations, regional fisheries bodies and users of the FAO Fishery and aquaculture statistics.

Methodology

Scope

ISSCAAP classifies aquatic commercial species into 50 groups and nine divisions on the basis of their taxonomic, ecological and economic characteristics.

Concept Being Classified

Goods, animals

Statistical Units

Species

Relationship to Other International Classifications

Related To:
ASFIS list

Classification Structure

Level

Level Name

Code Format

Number of Items

Level 1

Division

0

9 items

Level 2

Group

00

50 items

Criteria for Definition of Levels

The ISSCAAP comprises 50 groups under nine divisions. The first eight divisions are dedicated to major groups of marine and freshwater animals, the ninth division is for aquatic plants. Species are classified by these groups and divisions on the basis of their taxonomic, ecological and economic characteristics.

Revision Information

Chronology of revisions/versions of the classification:

Title or version number:
2001

Website:
https://www.fao.org/fishery/static/ASFIS/ISSCAAP.pdf

Official Adopting Entity:
Coordinating Working Party on Fishery Statistics

Coordinating Entity:
FAO as Secretariat of CWP

Next Review:
Under discussion at CWP - dates not fixed yet.

Reason for Latest Revision:
For the 2001 version, to better classify demersal and pelagic species and refine the coverage of some of the groups

Major Changes:
Modification of three main groups “Miscellaneous demersal fishes”, “Miscellaneous coastal fishes” and “Miscellaneous pelagic fishes”

Contact Information

Coordinating Working Party on Fishery Statistics
FAO FIAS, Fisheries Division (NFI)
Contact Name:
Stefania Vannuccini
Email:
[email protected]
Website:
http://www.fao.org/cwp-on-fishery-statistics/handbook
Address:
Viale delle Terme di Caracalla, 1
00153 Rome, Italy

General Information

Status

Operational

Website

https://www.fao.org/3/a-bt967e.pdf

Custodian

Food and Agriculture Organization of the United Nations (Secretariat of the Coordinating Working Party on Fishery Statistics)

Year Adopted

1965

Year Published

2019

Availability

English, French and Spanish

Purpose of the Classification

Statistical Domain

Fishery and aquaculture statistics

Purpose

This classification is designed to cover the products derived from fish, crustaceans, molluscs, other aquatic animals and plants for which the Food and Agriculture Organization of the United Nations (FAO) collects national statistics on production and trade on a regular basis. It includes live species as well products resulting from further processing of species destined to human consumption or to other purposes including ornamental.

Main Applications

For collection and dissemination of fisheries commodities production and trade statistics by FAO. One basic purpose of the classification system for fish and fishery products was to improve presentation of comparability of statistics of different types collected from a wide range of sources. It also serves as: a) a basis for statistical collection procedures; b) a framework for compilation and presentation of statistics; c) aggregates and elements for analyses; d) a set of elements (or building blocks) suitable for rearrangement or expansion for special studies or for special purpose classification systems.

Main Users

Users of the FAO Fisheries commodities production and trade statistics and Fishery statistical offices.

Methodology

Scope

The ISSCFC classification is designed to cover fish, crustaceans, molluscs, other aquatic animals, plants and their based products for which FAO collects production and trade statistics on a regular basis. Products are classified according to the species and to the degree of processing. It also includes species for ornamental purposes, for culture (i.e. fingerlins, fry, etc), corals, sponges, residues, seaweeds and other algae. At present, it does not include aquatic mammals, frogs and crocodiles. Fisheries operations and services are also excluded, along with other fishery-based activities.

Concept Being Classified

Goods

Statistical Units

Commodity

Relationship to Other International Classifications

Related To:
International Standard Statistical Classification for Aquatic Animals and Plants (ISSCAAP)
Standard International Trade Classification (SITC) Revision 4
Harmonized System (HS) Classification version 2017
Central Product Classification (CPC) version 2.1

Major Differences (Scope, Structure, and Concepts):
ISSCFC has been constructed as an expansion of SITC and it is also directly linked with the Harmonized System (HS), Central Product Classification (CPC) and ISSCAAP. It is focused on fish and fish-based products (primary and secondary) and it contains more than 1 200 codes. Therefore it presents an improved breakdown by species and product forms compared to SITC, HS and CPC. The enhanced coverage and the links with other international classifications facilitate the collation of national data received in different formats/codes, including national classification based on HS or SITC. It is based on the structure of SITC, but presenting additional codes to include links to ISSCAAP and enhanced breakdown by species and product forms. Main difference with SITC and HS is related on the enhanced detail by species/product forms included in ISSCFC, which allows the analysis, comparison and dissemination of more detailed data on fisheries commodities production and trade. ISSCFC is based on following criteria: stage of processing, group of similar biological characteristics (ISSCAAP) and purpose or intended use.

Classification Structure

Level

Level Name

Code Format

Number of Items

Level 1

=SITC Division

0

8 items

Level 2

=SITC Group

00

26 items

Level 3

N/A

000.0.0

 

Level 4

N/A

000.0.0.0

 

Level 5

N/A

000.0.0.0.00

 

Level 6

N/A

...

 

Note

This classification is based on the SITC’s structure, with additional codes to include links to ISSCAAP and breakdown by additional species and product forms. It is a hierarchical classification, but the number of codes is not fixed.

Revision Information

Chronology of revisions/versions of the classification:

Title or version number:
ISSCFC

Website:
https://www.fao.org/cwp-on-fishery-statistics/handbook/socio-economic-dimension/fishery-commodities-classification/en/

Official Adopting Entity:
Food and Agriculture Organization of the United Nations (FAO)

Coordinating Entity:
FAO as Secretariat of CWP

Next Review:
2020

Reason for Latest Revision:
Maintenance includes a yearly updating in the light of new emerging commodities/species in international trade and of changes in international/national commodity classifications

Major Changes:
The 2019 version includes an improved breakdown of species and product form due to the significant changes of the HS2017 for fish and fishery codes.

Contact Information

Food and Agriculture Organization of the United Nations
Coordinating Working Party on Fishery Statistics
FAO FIAS, Fisheries Division (NFI)
Contact Name:
Stefania Vannuccini
Email:
[email protected]
Website:
https://www.fao.org/fishery/cwp/en
Address:
Viale delle Terme di Caracalla, 1
00153 Rome, Italy

General Information

Status

Operational

Website

https://www.fao.org/cwp-on-fishery-statistics/handbook/capture-fisheries-statistics/fishery-fleet/en/

Custodian

Food and Agriculture Organization of the United Nations (Secretariat of the Coordinating Working Party on Fishery Statistics)

Year Adopted

1984

Year Published

2015

Availability

English

Purpose of the Classification

Statistical Domain

Fishery statistics

Purpose

Under the ISSCFV, the CWP adopted three classifications, which cover the major features critical in classifying vessels based on type by GRT, length classes (length overall) and vessel types.
This component, the International Standard Statistical Classification of Fishery Vessels by Vessel Types, is based on the structure and type of vessel.

Main Applications

Assessing fleet capacity and classification in vessel registries.

Main Users

FAO, statistical officers, fishery scientists, MCS (management, control and surveillance) of fishing activities, Regional Fisheries Bodies.

Methodology

Scope

To classify fishing vessels Classification should be applied based on vessel structure and type.

Concept Being Classified

Equipment, vehicles

Statistical Units

Fishing operational unit

Classification Structure

Level

Level Name

Code Format

Number of Items

Level 1

Vessel Types Code

xx.x.x.

20 items

Level 2

Vessel Types Code

xx.xx

44 items

Revision Information

Chronology of revisions/versions of the classification:

Title or version number:
ISSCFV

Website:
https://www.fao.org/3/a-bt983e.pdf

Official Adopting Entity:
Coordinating Working Party on Fishery Statistics

Coordinating Entity:
Coordinating Working Party on Fishery Statistics

Reason for Latest Revision:
In general, revision is made according to the request from the CWP participating organizations (i.e. members).

Major Changes:
A simplified list was implemented with elaboration of the classification of vessels supporting fishing related activities to meet the demand from member states also complying with the Agreement on Port State Measures (PSMA).

Contact Information

Food and Agriculture Organization of the United Nations
Coordinating Working Party on Fishery Statistics
FAO FIAS, Fisheries Division (NFI)
Contact Name:
Stefania Vannuccini
Email:
[email protected]
Website:
https://www.fao.org/fishery/cwp/en
Address:
Viale delle Terme di Caracalla, 1
00153 Rome, Italy

General Information

Status

Operational

Website

https://www.fao.org/cwp-on-fishery-statistics/handbook/capture-fisheries-statistics/fishery-fleet/en/

Custodian

Food and Agriculture Organization of the United Nations (Secretariat of the Coordinating Working Party on Fishery Statistics)

Year Adopted

1977

Year Published

1990

Availability

English

Purpose of the Classification

Statistical Domain

Fishery statistics

Purpose

Under the ISSCFV, the CWP adopted three classifications, which cover the major features critical in classifying vessels based on type by GRT, length classes (length overall) and vessel types.
The International Standard Statistical Classification of Fishery Vessels by Gross Register Tonnage (GRT) Categories, is based on the Gross Register Tonnage of the vessels. It covers the dimension of gross registered tonnage using either the London Convention, which has been adopted for vessels of 24 meters in length and over, or with the older Oslo Convention method.

Main Applications

Assessing fleet capacity, classification in vessel registration.

Main Users

FAO, Statistical officers, fishery scientists, MCS (management, control and surveillance) of fishing activities, Regional Fisheries Bodies.

Methodology

Scope

To classify  fishing vessels. Classification should be applied based on gross registered tonnage measurement.

Concept Being Classified

Equipment, vehicles

Statistical Units

Fishing operational unit

Classification Structure

Level

Level Name

Code Format

Number of Items

Level 1

GRT Division Code

xx

12 items

Level 2

GRT Division Code

xxx

30 items

Revision Information

Chronology of revisions/versions of the classification:

Year Adopted:
1990

Title or version number:
ISSCFV-GRT

Website:
https://www.fao.org/3/a-bt982e.pdf

Official Adopting Entity:
Coordinating Working Party on Fishery Statistics

Coordinating Entity:
Coordinating Working Party on Fishery Statistics

Reason for Latest Revision:
In general, revision is made according to the request from the CWP participating organizations (i.e. members).

Major Changes:
Change from the Oslo convention to the London Convention (in force from July 1994 for vessels > 24 meters in length).

Contact Information

Coordinating Working Party on Fishery Statistics
FAO FIAS, Fisheries Division (NFI)
Contact Name:
Stefania Vannuccini
Email:
[email protected]
Website:
https://www.fao.org/fishery/cwp/en
Address:
Viale delle Terme di Caracalla, 1
00153 Rome, Italy

General Information

Status

Operational

Website

https://www.fao.org/cwp-on-fishery-statistics/handbook/capture-fisheries-statistics/fishery-fleet/en/

Custodian

Food and Agriculture Organization of the United Nations (Secretariat of the Coordinating Working Party on Fishery Statistics)

Year Adopted

1982

Year Published

1982

Availability

English

Purpose of the Classification

Statistical Domain

Fishery statistics

Purpose

Under the ISSCFV, the CWP adopted three classifications, which cover the major features critical in classifying vessels based on type by GRT, length classes (length overall) and vessel types.
This component, the International Standard Statistical Classification of Vessels by Length Classes, is based on the length of the Vessels as measured between perpendiculars

Main Applications

Assessing fleet capacity, classification in vessel registration.

Main Users

FAO, Statistical officers, fishery scientists, MCS (management, control and surveillance) of fishing activities.

Methodology

Scope

To classify fishing vessels. Classification should be applied based on vessel shapes, structure and size measurements. The classification contains three determinates of vessel, i.e. type and two types of sizes (gross tonnage and length overall).

Concept Being Classified

Equipment, vehicles

Statistical Units

Fishing operational unit

Classification Structure

Level

Level Name

Code Format

Number of Items

Level 1

Length Class

Xxx

11 items

Contact Information

Coordinating Working Party on Fishery Statistics
FAO FIAS, Fisheries Division (NFI)
Contact Name:
Stefania Vannuccini
Email:
[email protected]
Website:
https://www.fao.org/fishery/cwp/en
Address:
Viale delle Terme di Caracalla, 1
00153 Rome, Italy

General Information

Status

Operational

Website

https://www.fao.org/cwp-on-fishery-statistics/handbook/capture-fisheries-statistics/fishery-fleet/en/

Custodian

Food and Agriculture Organization of the United Nations (Secretariat of the Coordinating Working Party on Fishery Statistics)

Year Adopted

1980

Availability

English, French and Spanish

Purpose of the Classification

Statistical Domain

Fishery statistics

Purpose

Although this classification was initially designed to improve the compilation of harmonized catch and effort data on the STATLANT B questionnaires and in fish stock assessment exercises, it has also been found very useful for fisheries technology and the training of fishers. It has been used in particular for reference in works dealing with the theory and construction of gear and for the preparation of specialized catalogues on artisanal and industrial fishing methods.

Main Applications

Identifying the fishing technology in reporting on fishing CATCH and EFFORT; a part of basic definition of different "fisheries".

Main Users

Fishery statistical offices, fishery scientists, MCS (management, control and surveillance) of fishing activities, fisheries technology and training fishers.

Methodology

Scope

The classification is developed based on fish entangling mechanisms and gear structure used with a global emphasis on existing major fishing areas in the Atlantic, Indian, Pacific and Antarctic Oceans.

Concept Being Classified

Goods, equipment

Statistical Units

Fishing operational unit; holding

Classification Structure

Level

Level Name

Code Format

Number of Items

Level 1

Gear Categories

01

12 items

Level 2

Gear Categories

01.1

60 items

Revision Information

Chronology of revisions/versions of the classification:

Year Adopted:
2013

Title or Version Number:
ISSCFG Revision 1

Website:
http://www.fao.org/3/a-bt987e.pdf

Official Adopting Entity:
Coordinating Working Party on Fishery Statistics

Coordinating Entity:
Coordinating Working Party on Fishery Statistics

Contact Information

Coordinating Working Party on Fishery Statistics
FAO FIAS, Fisheries Division (NFI)
Contact Name:
Stefania Vannuccini
Email:
[email protected]
Website:
https://www.fao.org/fishery/cwp/en
Address:
Viale delle Terme di Caracalla, 1
00153 Rome, Italy