The Western Australian Pearling Industry is totally reliant on quotas of wild stock silver- or goldlip pearl oysters, Pinctada maxima. Any sustainable expansion of the Industry is unlikely to occur unless hatchery-propagated oysters become available as an alternative source to wild stock....

Data have been collected on the biology of western yellowfin bream and four tuskfish species that are of the type and quality required by managers for developing appropriate plans for conserving the stocks of these five commercial and recreational species. Emphasis was thus placed on determining (1)...