Abstract
The formation of annuli was examined from scales and otoliths of farmed (known age) common dentex, Dentex dentex. One scale annulus formed each year during May and one hyaline zone on the otoliths during June. The formation of scale annuli and the hyaline zone on otoliths of adult fish coincided with gonadal maturation which takes place during April to May. Scales were found to be more accurate than otoliths in respect to annuli formation, but their annuli were not as intense and distinct. Missing or additional hyaline zones were observed on adult otoliths. These irregularities were observed after fish maturation and were related to temperature conditions, as well as to faster growth of the farmed fish than the wild ones.
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