This presentation reviews the role of emerging technologies in aquaculture. In genetics and breeding, the pace of advancement and innovation has been increasing exponentially. Improvements in aquatic animal health are coming from new technologies and improved management strategies. Nutritional research has focused on shifting from formulations based on ingredients to strategies based on nutrient availabilities and requirements. Production systems technology advancements are also contributing to sustainable industry expansion.

Risk and uncertainty associated with returns from investment in aquaculture to be an important constraint on aquaculture investment. Attention is given in this paper to identifying the factors that contribute to risk and uncertainty in aquaculture and methods of specifying the risk and uncertainty involved. It is found that there is limited practical scope for the extension of insurance markets in aquaculture, and most farmers will have to rely on other means to manage risk.

If the aquaculture sector is to maintain its current average growth rate of 8 to 10 percent per year to 2025, the supply of nutrient and feed inputs will have to grow at a similar rate. Feed-fed aquaculture production is largely dependent upon capture fisheries for dietary protein and lipid. Sustainability of the aquaculture sector is likely to be linked with the supply of animal and plant proteins, oils and carbohydrate sources for aquafeeds.

It is an undisputable fact that modern farming of carnivorous fish and shrimp uses more fish as feed than is produced as finfish or shrimps; that is, the ratio between fish used and fish obtained is higher than one. The author shows that industrial fishing for forage species brings about a net contribution of foodfish supplies, without causing a systematic collapse of the exploited forage species.

Aquaculture is today considered the only viable option for meeting the increasing future demand for fish and seafood products. There are concerns that unconstrained sectoral expansion and intensification, coupled with its ecological and social impacts, globalisation and fluctuation of markets and resources, climate change may have undesirable impacts on the resilience of social-ecological systems. Aquaculture makes demands on, but also can provide a range of ecosystem services.