Seasonal fishing bans will be imposed on the Pearl River and the middle and lower reaches of the Yangtze River in April.

The move is part of China's efforts to rescue its declining wild fishing resources, and is in addition to bans in six other provinces and regions.

A 2-month ban will cover the 2,400-kilometer Pearl River, China's third-longest river, as well as its tributaries and some lakes.

Meanwhile, a 3-month ban will affect the middle and lower reaches of the Yangtze River, from Gezhouba Dam in Hubei province to Shanghai's Chongming Island.

Fishing is usually banned in the upper reaches of the river annually from February to the end of April.

The ban is the 11th annual attempt to preserve biodiversity in the country's longest river, home to 1,100 aquatic species and to two-thirds of those on the list of protected wildlife .

Liu Tianrong, deputy director of the South China Sea Fishery Bureau, said on Tuesday that the ban on the Pearl River last year greatly helped improve fish varieties and increased fishermen's income after the ban.