Our results also point out that water temperature
is apparently the major factor associated
with the fish movements as also stated by Maia
& Valente (2004) for Chondrostoma oligolepis.
In addition, Santos et al (2002) found that river
flow was the only factor significantly correlated
to Iberian chub upstream daily movements in a
fish lift in the Lima River. This is in contrast with
our results that revealed the influence of the river
flow only for the downstream movements. Santos
et al. (2002) also stated that the Iberian chub major
movements occurred from mid-April onwards
when water temperature increases to values ranging
from 12 to 14 ◦C which agrees with our results.
Baras & Cherry (1990) also found for the
population of Barbus barbus in the Ourthe River,
Belgium, that fish movements increased fo