The world’s human population is continuing to increase, with a recent UN projection of global population in 2050 of 9.6 billion. That would be a 33.3 percent increase above the current global population of about 7.3 billion. In many countries, economic conditions are improving; it is anticipated that the middle class will grow by 2.6 billion by 2050 (Ward and Neumann 2012). The middle class has more money to spend and they tend to purchase more food, especially protein, than do poorer people.

Assuming the status quo for per capita consumption, demand for fisheries products — like population — will increase by 33.3 percent by 2050, but capture fisheries has reached its limit and the increase in demand for seafood must come from aquaculture. Based on recent statistics, the world production of seafood (excluding aquatic plants) is 159 t, of which 67 t are from aquaculture (FAO 2014). The status quo demand for fisheries products in 2050 will be 212 t with 120 t coming from aquaculture, an increase of about 80 percent, but the actual demand likely will be greater.

Kehongda's high-efficiency aquaculture disinfectants can help culturists to solve the problem they may meet.

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