Aquaponics, which integrates hydroponic farming and aquaculture, has the potential for sustainably producing high-quality food, but has yet to achieve commercial success. In recent years, however, commercial-scale aquaponics has received considerable attention from the scientific community, with the current literature covering many aspects of aquaponic production. We reviewed this literature and classified the specific areas covered by each paper and its contribution to either cost reduction or benefit enhancement. The literature regarding the economic benefits of aquaponics was summarised, and despite contradicting views of current profitability, there is a consensus that (i) larger systems are economically superior to smaller ones; (ii) profitability is sensitive to retail prices; and (iii) commercial aquaponics are more profitable through improved business plans. This review provides a quantitative scientific analysis of the bioeconomics and potential of commercial aquaponics, useful for both researchers and practitioners. We argue for greater focus on three understudied aspects that could each be a 'game changer' for commercial aquaponics. These include the following: (i) grower considerations such as financial planning and risk management that affect potential growers' initial engagement in aquaponics; (ii) consumer perception of aquaponic products including the willingness to pay more for its added value; and (iii) the economic value of the environmental benefits of aquaponic systems and ways to internalise them for profit. Further study of each of these aspects, along with the ongoing improvement of production systems, will support the establishment of large-scale aquaponics as an economically sustainable industry.

Aquaponics, the combined rearing of fish and hydroponic horticulture, has great potential for sustainable food production. Despite increasing research and investments in commercial scale systems, aquaponics is not yet a successful industry and most businesses report negative returns. Aquaponic produce is thought to contain added value to the consumer, and the environment.As most consumers are unaware of aquaponics and their benefits, little is known of its potential market. The present study addresses this gap by analysing willingness to consume aquaponic produce at different price levels in Israel and Australia. We used econometric tools to study the effects of pricing and other factors on revenues in each country. Cluster analysis was used to define groups of potential consumers. The results indicate that 17-30% of the population in both Israel and Australia would prefer to consume aquaponic produce once informed of their added value. Revenues at a given premium would be higher in Israel than in Australia, and higher for a leafy green, than for fish. Different segments of the population differed in their willingness to consume aquaponic produce, as well as in their stated motivations when purchasing food.Conclusions highlight the importance of case-specific research on consumer preferences and economic considerations preceding commercial investment in aquaponics.

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