This paper reports improved techniques for seed production of the winged pearl oyster , Pteria penguin, by evaluating the effects of various microalgae mixtures and salinity on growth and survival of oyster veligers. In the first experiment, D-stage veliger larvae were reared in conical fiberglass tanks and fed various combinations of microalgae: (1) Dicteria sp. and Nannochloropsis oculata (1:1); (2) Isochrysis galbana and Dicteria sp.; (3) Isochrysis galbana and Nannoch loropsis oculata; and (4) Nannochloropsis oculata, Isochrysis galbana and Dicteria sp. (1:1:1). The experiment was conducted for 19 days with three replicate tanks per treatment . In the second experiment, 1-day old veliger larvae were reared at salinities of 24‰, 27‰, 30‰ and 33‰ for a period of 19 days. Each salinity was randomly assigned to 3 replicate tanks . The larvae were fed once a day with a combination of Nannochloropsis oculata , Isochrysis galbana and Dicteria sp. at a concentration of (3,000 cells/ml of each species of algae). R esults of the first experiment showed that larvae fed Nannochloropsis oculata, Isochrysis galbana and Dicteria sp. (1:1:1) obtained the largest length (199.94 ± 0.01 µm) , a mean daily growth rate (D GR) of 13.14 ± 0.26 µm/day and survival of 19.5 ± 1.6 %) (P<0,05 ). In the second experiment, salinity significantly affected growth (shell length) , DGR and survival of pearl oyster larvae (P< 0.05) , with larvae cultured at 30‰ gaining the highest shell length, DGR and surviv al. L arvae cultured at 24‰ had the lowest shell length, DGR and survival.