Forty-five specimens (175 g mean bw) of the hermaphroditic
protandrous seawater teleost gilthead seabream
(Sparus aurata L.), obtained from CULMAREX S.A. (Murcia,
Spain), were kept in 4 running seawater aquaria (450e
500 l, flow rate 1500 l h1) at 28& salinity, 20 C and
a 12 h light: 12 h dark photoperiod. The animals were fed
with a commercial pellet diet (Skretting) at a rate of 1%
bw day1.