Oplegnathus fasciatus, gave no significant improvement in growth and other characteristics
Tabata, 1991; Murata, 1998 . In hirame, a continuous growth through life was Ž .
observed both in diploids and triploids and normal diploids were found to continue
growth even in the spawning season Tabata, 1991 . Thus, the advantage of triploidy due Ž .
to reallocation of energy costs from gonadal to somatic growth is rather doubtful in this
species Tabata, 1991 . There is also no significant difference in growth between Ž .
diploids and triploids of red sea bream and Japanese parrot fish Murata, 1998 . Ž .
However, the lack of improvement of growth in triploid red sea bream may relate to the
exclusive occurrence of males in this species.