The Asian longest river boasts one of the highest levels of biodiversity in the world. However, the protection situation of some rare and unique aquatic species is grim. China began a 10-year fishing moratorium in 332 conservation areas in the Yangtze River basin, which will expand to all the natural waterways of the river and its major tributaries from no later than Jan. 1, 2021. "The biodiversity is recovering in the Yangtze. The species number has so far increased to 79 in the Jiangsu section from 48 at the beginning of 2017," said Zhang Jianjun, the Jiangsu Province's Agriculture Department Deputy Director.