Dalian Zhangzidao Fishery Group Co., Ltd. (Zhangzidao Group), one of China's leading aquaculture and seafood processing company, announced its financial results for the first half of 2013 on August 19.

While the group's operating income rose by 7.9% to RMB1.13 billion (US$184.53 million) in the first half of 2013, its net profit in the same period fell by 66.23% to RMB52.71 million (US$8.61 million).

The company cites low scallop harvest as the main reason for the profit drop, and expects its sales performance from January to September 2013 to drop by 50% to 80%.

However, Zhangzidao Group also says that the fourth quarter is historically the main profit-making period for the company. In 2009, 2010 and 2011, the company's fourth-quarter profit accounted for 40%, 40% and 32% of the respective year's total profit.