International Council for the Exploration of the Sea
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Fish ageing by otolith shape analysis

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posted on 2022-11-03, 10:38 authored by FAbOSA

Depletion of our fish stocks due to overfishing is undoubtedly the single most important problem facing the fishery industry world-wide. Knowledge of the age profile of a fish population is of primary importance for stock assessment and thus for stock management. The purpose of this study was to develop and evaluate objective and robust fish ageing methods based on twodimensional images and on three-dimensional shape and density distributions of otoliths. In the course of the project a large database of otolith shapes was established for a number of important species. The database has been used to test newly developed methods and algorithms in the context of this project and it will continue to serve that purpose for new methods to be developed in the future.


EC contract No. FAIR CT97 3402



Final Report to the European Commission

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