News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.
Innovation & Investment

Aquaculture planning, development in Brazilian federal waters

The aquaculture industry in Brazil is moving toward further expansion with the support of the federal government. A key strategy of the More Fishing and Aquaculture plan is the development of aquaculture in federal waters. The plan promotes sustainable development 


Water composition: Dissolved inorganic solids

A few anions and cations, and un-dissociated silicic acid represent the largest fraction of dissolved inorganic solids in water. The total concentration of ions is called the salinity. The total dissolved-solids concentration usually is roughly equal to salinity in freshwater. 


Pond aeration and aerators: Second thoughts

Aerators, especially paddlewheels, are often used to mix the water and address oxygen stratification in ponds. However, most aerators do not provide the most efficient and power-conscious service. Due to thermal and oxygen stratification in ponds, the efficiency of paddlewheel 


Emerging trends in salmonid RAS, part 2

Dozens of land-based, closed-containment salmonid RAS systems are coming on line. New projects are bringing new principles into the salmon industry. Industry expansion hinges upon the development of pollution-mitigating technologies to reduce nutrients in effluents. 


FAO fish indices enhance global seafood price evaluations

The aquaculture industry influences global seafood prices by increasing international trade competition. The fish price indices published by the Food and Agricultural Organization of the United Nations report the aggregate effects of seafood supply and demand. 


Human enteric viruses in shellfish, part 1

Commercially harvested shellfish have been reported to cause gastro-enteritis when humans consume virus-contaminated products. Rotaviruses are one of the main types of viruses able to survive and persist in the aquatic environment. 


Certified clarity in aquaculture

Aquaculture certification programs essentially mark milestones on the journey toward more sustainable practices. There is a role for a clearly defined starting point of “minimum acceptable standards,” but it is equally important to create incentive structures to enable producers to 

Health & Welfare

Emerging trends in salmonid RAS, part 1

The benefits realized by recirculating aquaculture systems – including enhanced fish growth, product quality and survival, as well as reduced treatment costs – have made the RAS approach an important production trend. 


Aquaculture effluent partially replaces growing mix for plant production

Aquaculture effluent can be an effective fertilizer in land-based plant production. Research with tilapia utilized dewatered aquaculture effluent (A.E.) as a partial substrate replacement for tomato plant seedlings. Seedling growth decreased when effluent replaced a commercial growing mix at 25