1000 mu. According to relevant public information, Hongze Gaoliangjian aquatic products covers an area of about 1 1,000 mu, of which the water surface area is about 400 mu, and the rest are supporting facilities such as farms and production workshops. In the water area of about 400 mu, the aquatic products of Hongze Gaoliangjian mainly cultivate freshwater fish such as silver carp, bighead carp and carp. Hongze Gaoliangjian Aquatic Products is an aquaculture base located in Hongze District, Huai 'an City, Jiangsu Province, focusing on freshwater aquaculture.