Geographical indication of "Chaobai River Carassius auratus" in Datang Town, Baodi District, Tianjin. With the continuous improvement of living standards, people are increasingly pursuing natural and green consumption. The production and development of geographical indication aquatic products will play a more and more important role in improving the ecological environment and promoting the development of tourism in Baodi District. Baodi District is located in the north of Tianjin, adjacent to yutian county in Hebei Province and Ninghe District in Tianjin in the east and southeast. South and southwest are bordered by Ninghe District and wuqing district; The west and northwest are connected with Xianghe County and sanhe city. The north and northeast face Jizhou District of Tianjin and yutian county of Hebei across the river.