To safeguard ecosystem and economic benefits against the current trend of reef decline, over 80 coral propagation structures have been established across six high-value sites on the Great Barrier Reef (GBR) by The Coral Nurture Program (CNP); a unique partnership between tourism and science, and the first coral stewardship initiative of scale. The majority of these structures have not been regularly cleaned since installation, with operators relying on their evolution into novel habitat that supports fish communities which provide ‘nature-assisted’ cleaning benefits. Currently, no research on GBR addresses how stewardship initiatives account for these benefits. As such, this project leverages upon the exclusive access granted though CNP to investigate how evolving structure habitat can promote ‘nature-assisted’ cleaning. Firstly, we explore how fish communities respond to different structure ecological compositions and conditions. A controlled experiment establishing new structures will then investigate effects of varying coral arrays and position from neighbouring reef sites on fish communities. Finally, cage exclusion plots and graze plate assays on new frames will quantitatively measure fish species contributions to cleaning effects. Together, this research will offer insights into coral restoration initiatives, while exploring strategies for optimising stewardship outputs to provide novel fish habitat and ‘nature-assisted’ cleaning benefits.