The back-calculated lengths revealed values
similar to those referred to by Valente (1993) for
Iberian chub populations in other tributaries of
the Lima River, except for the first year of growth
where our results are higher. The estimated final
length value is superior to those referred to by
Valente (1990 and 1993) for tributaries of the Lima and Douro basins, and even for the chub
population inhabiting the upper Estor˜aos River
stretches.