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Book (editor) - Peer-reviewed, 2019

Handbook of fish age estimation protocols and validation methods


The Planning Group on Commercial Catch, Discards and Biological Sampling (PGCCDBS) 2012 was approached by the ICES Publications and Communications Group (PUBCOM) with the suggestion to combine the existing protocols on the age estimation of fish species within the ICES Area and publish them as an ICES Cooperative Research Report (CRR). This idea was received favourably by PGCCDBS. It was deemed important to (i) summarize the state of knowledge for key species, (ii) scrutinize, by peer review, the work done during the many calibration exercises, and, by doing so, (iii) promote an increase in quality. The aim of the present publication is to provide a comprehensive manual on the methodology of age estimation and validation and represents a collation of the state-of-the-art scientific work on the methods and validated age estimation of commercially exploited fish species across Europe. Having a collation of the latest methodologies by species grouping will also facilitate rapid and quality-assured development of methods suitable for new species.


age estimation; age reading; fish; gadoids; flatfish; small- and medium-sized pelagic species; deepwater species

Published in

Ices Cooperative Research Report
2019, number: 346
Publisher: ICES, International Council for the Exploration of the Sea

Editors' information

Swedish University of Agricultural Sciences, Department of Aquatic Resources
Worsøe Clausen, Lotte
International Council for the Exploration of the Sea (ICES)
Ní Chonchúir, Gráinne
Marine Institute

UKÄ Subject classification

Fish and Aquacultural Science

Publication Identifiers


ISBN: 978-87-7482-223-3

URI (permanent link to this page)