Juvenile gilthead seabream (Sparus aurata)
(2.23 ± 0.36 g, 5.19 ± 0.23 cm) and juvenile seabass
(D. labrax) (0.50 ± 0.05 g, 1.90 ± 0.21 cm) were
obtained from two fish farms outside the river Ebro
Delta. All fish were maintained in tanks for 1 month
before undertaking the experiments, at a density of
5 kgm-3, in running water free of G. corsicum.