Land based aquaculture has the potential to mitigate future shortfalls of food fish supply in Solomon Islands. However, aquaculture is relatively new in the Pacific and such potential is hampered by a lack of aquaculture knowledge and practice within local cultures. A participatory action research approach was used to conduct on-farm trials with farmers in Solomon Islands to develop relevant and improved ways of farming and maximising productivity of the resident exotic tilapia Oreochromis mossambicus.