The wavy periwinkle (Lunella undulata) is a medium-sized commercially harvested marine gastropod, growing to a maximum length (ML) of around 65 mm. It inhabits shallow temperate waters (0–20 m) of southern Australia, typically occurring on exposed, sand-swept reefs and boulder habitats. In Tasmania, landings peaked at 43 t in 2022, but localised fishing pressure has caused substantial stock declines, leading to a 50% cut in the total allowable commercial catch (TACC) and a ~80% reduction in landings. In response, this study was established to support L. undulata production by assessing the potential for marine restocking and/or full-life-cycle aquaculture through optimising growth temperature, developing breeding and larval rearing protocols, and assessing formulated feeds. Our initial investigation evaluates the effect of temperature on growth across a three-month trial on 640 individuals fed commercial abalone feed in excess, sourced from two wild populations and split across five temperature treatments (13, 16, 19, 22, and 25 °C). The two wild source populations possess contrasting growth phenotypes, being a fast-growing population with a larger ML, and a slower growing population with smaller ML. This represents the extremes of growth observed in previous field studies. Preliminary results indicate significantly higher growth rates at the highest temperature and in the fast-growing population, and lower growth rates at the lowest temperature in slow-growing populations. Further, metabolic performance (respirometry), critical thermal maximum (CTmax), and food consumption rates are being assessed across treatments. Future research will focus on developing breeding and larval rearing techniques and evaluating performance of different feeds. Overall, this research will inform the sustainable management of Tasmania's wild L. undulata fishery while evaluating the feasibility of marine restocking and full-life-cycle aquaculture as complementary strategies to rebuild and sustain future production.