Aquaculture is a very important sector for fulfilling the demand for food security and economics. The sector has been progressing on the price of natural assets and the environment. The major energy used for aquaculture operation like fish production, artificial aeration, feed manufacturing, feed application, processing, recirculating aquaculture system (RAS), aquaponics and integrated multi-trophic aquaculture (IMTA), in this paper discussed about artificial aeration, feed application, and processing technology. In modern days, aquaculture is the most energy-demanding sectors of food production. Mechanized or smart aquaculture farming is directly related on fossil fuels, which are also non-renewable and limited resources. Estimates indicate that aeration energy use in shrimp farming varied from 3700 to 6800 kWh per ton of shrimp (average ≈ 5000 kWh/t). Therefore, it’s crucial to continue with the research activities to minimize the energy usage of aeration in aquaculture. The standard aeration efficiency (SAE) of different aerators varies from as low as 0.304 kg O2/kWh to as high as 3.485 kg O2/kWh. Therefore, the selection of aerators is very important for obtaining energy efficiency in aeration. Although large varieties of aerators have been tested in the laboratory to develop energy-efficient aerators, various gravity aeration practices used at the farm level are yet to be evaluated for their energy efficiency. The application of feed also consumes a lot of energy. Not only the feeder needs some energy but the wasted feed also consumed energy during its manufacture. Some energy-free feeders already developed may be used for feed applications. Aquaculture processing activities are also dependent on electricity as well as fuel. Increasing energy price could make in the aquaculture operation vulnerable, and ultimately it may decrease the food security at the local, regional, and global levels. Therefore, mitigating the energy use in aquaculture industry is very essential for the grow in a sustainable manner. An attempt is made in this paper to review the energy use in different stages of fish production and suggest ways for efficient energy use in aquaculture.