| Summary: | <i>Laevistrombus canarium</i>, also known as dog conch, is a marine gastropod mollusk widely distributed in the Indo-Pacific region. It is an economically crucial species; however, its population has been declining due to overfishing and overexploitation. In this study, the suitable salinity for juvenile <i>L. canarium</i> was between 20 and 35‰. Diatoms and biological detritus by using flow-water from the fish pool were the most favorable diets for newly metamorphosed and 10 mm juveniles. In the polyculture experiment, <i>L. canarium</i> was cultured with whiteleg shrimp, tilapia, small abalone, purple sea urchin, and collector urchin. Better growth was found in all co-culture groups except with whiteleg shrimp. We also found that the polyculture system with or without substrates significantly affected the growth of juveniles. Additionally, we observed that water temperature was the most crucial factor for growth and survival; a water temperature of less than 10 °C might cause the death of <i>L. canarium</i>. We have proposed a novel polyculture and water-flow method for mass production of <i>L. canarium</i> and evaluated the feasibility and benefits of polyculture with other species. The findings from this work reveal the potentiality of <i>L. canarium</i> in integrated multitrophic aquaculture (IMTA) and its implication for aquaculture and resource restoration.
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