We have been farming triploid Pacific oysters in Australia for some time now. They are sold at market sizes in the summer and early autumn when our regular hatchery produced, farmed diploids have spawned out or are too spawny for consumer acceptance. In the late spring and early summer, for us, the triploids can appear with a cream to light tan to walnut coloured area of flesh akin to where the bulk of the gonad would be had they been diploids! The extent of the discolouration varies and meets with some consumer resistance. Generally after spawning in our diploid stocks held under the same conditions in the same areas as the triploid oysters, the pigmentation fades, something is reabsorbed? The pigmentation phenomenon presents itself in both cytochalasin induced trips as well as in tetraploid produced trips. Any comments, observations would be useful, I am aware that the West Coast farms triploids and wondered if anyone could shed some light on the subject as the literature is non-existent.