For decades, fishmeal has been the major source of protein in aquafeeds due to its comprehensive amino acid composition with about 68% of global supply; however, there have been major concerns regarding the economic and environmental sustainability of fishmeal in aquafeed production and such concerns have led to the pressing need for alternative protein sources. Consequently, the aquaculture industry is shifting towards a sustainable feed ingredient to reduce reliance on wild-sourced fishmeal which has been heavily utilised over the decades. Recently, focus on insect-based protein has greatly increase with studies to evaluate their potential as protein sources in aquaculture as a natural replacer of fishmeal. The review considered the potential of black soldier fly (BSF), Hermetia illucens as a replacer of fishmeal in aquafeeds.