Cage farming began in late 1970s in the People's Republic of China, originally introduced in inland aquaculture and later in mariculture. In the late 1970s, Huiyang County and Zhuhai City, Guangdong Province succeeded in farming marine fishes including grouper and seabream in cages. It was the first trial of marine cage farming in China. In 1981 experimental farming expanded to a commercial scale. Almost all of the products were exported to China, Hong Kong SAR and Macao markets. In 1984 other counties and provinces (Fujian, Zhejiang) began the farming of marine fish in cages. According to a survey, the number of marine fish cages in three provinces (Guangdong, Fujian and Zhejiang) has reached over 57 000. More than 40 species of marine fishes (Table 1) were farmed.
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