Species: African Catfish          Location: Sierra Leone

Species: Mandarin fish        Location: Anhui Province,China

Species: Carp \ Catfish          Location: Uzbekistan

Species: Penaeus Vannamei           Location: China

Species: Tilapia                 Location: Haiti

Bangladesh RAS Recirculating Aquaculture System Project Fish Species: Shing & Magur Biomass( stock densitv): 100 kilograms /m3 16 x 23.7m³ PVC Fish Pond 400m³/h Drum Filter 3 x 60m³/h Degassing System 5×60m³/h Bio-filter 120m³/h Oxygen Cone Key elements in indoor aquaculture projects include farming facilities, water quality control systems, temperature control equipment, lighting management, and feed supply. Comprehensive management and monitoring are also necessary to ensure the stability and sustainable development of aquaculture. When undertaking indoor aquaculture projects in the Bangladesh, it is important to choose suitable cultured species based on local resources and market demand. It is also crucial to comply with relevant regulations and policies to ensure that aquaculture activities adhere to environmental and food safety requirements.

Species：Yellow perch           Location: Shunde, China

Advantages of Recirculating Aquaculture System (RAS)1. It can effectively solve the problem of pollution and discharge of traditional aquaculture tail water, save energy and reduce emission, and protect the environment.2. Not subject to the influence and constraints of the natural environment, such as climate and water quality changes, theaquaculture process is easy to control, and can realise year-round multi-cycle aquaculture.3. It can reduce the dependence on high-quality aquaculture water source and realise cross-regional aquaculture, northern culture of southern fish and desalination of marine fish.4. It can effectively isolate diseases and control the invasion of disease sources, reduce the rate of nursery bacteria andmorbidity, and improve quality and efficiency.5. Controllable aquaculture environment and product growth rate, and predictable aquaculture harvest.6. Water and land saving, flexible site selection and high utilisation rate of the farm site7. High-density breeding, occupying less land, greatly increasing the production per unit of breeding area, scale efficiency and economic benefits.

RAS are used in home aquaria and for fish production where water exchange is limited and the use of biofiltration is required to reduce ammonia toxicity. Other types of filtration and environmental control are often also necessary to maintain clean water and provide a suitable habitat for fish.        The main benefit of RAS is the ability to reduce the need for fresh, clean water while still maintaining a healthy environment for fish. RAS have high fish stocking densities and can be operated economically commercial.        All our eWater researchers are currently conducting studies in RAS and we have many successful indoor fish farming projects all over the world.

RAS are used in home aquaria and for fish production where water exchange is limited and the use of biofiltration is required to reduce ammonia toxicity. Other types of filtration and environmental control are often also necessary to maintain clean water and provide a suitable habitat for fish.The main benefit of RAS is the ability to reduce the need for fresh, clean water while still maintaining a healthy environment for fish. RAS have high fish stocking densities and can be operated economically commercial.All our eWater researchers are currently conducting studies in RAS and we have many successful indoor fish farming projects all over the world.

The new circulating seafood holding system, the difference lies in the back end of the water treatment equipment, the water body of the holding tank will be led to a special water treatment room, through the protein separator, biochemical filtration tank, UV sterilizer, oxygenator and other equipment composed of the integrated system, rapid completion of the water quality filtration, and through the pump back to the holding tank.