The harvest celebration was held in the watershed of Mr. Navazandeh with a total area of ​​25 hectares located in the village of Spandan (Sari) for the project of the Caspian Sea Ecology Research Center to increase production per unit area of ​​warmwater fish by using a mechanization system in the watersheds of Mazandaran province with the participation of some fisheries experts, experts from the office of agricultural extension of the Organization of Agriculture- Jahad of the province, aquaculture farmers, authorities and experts of the research center, dated 4 November 2018. This project led to an increase in production using various aquaculture machines, periodic monitoring and evaluation of the physicochemical properties of water. The ceremony began with harvesting of products in front of the participants. At first, Dr. Nasrollahzadeh, the head of the research center welcomed the participants and talked about the necessity of implementing fisheries and aquaculture extension projects. Then, Mr. Navazandeh, the executor of the project delivered a speech about the implementation process of this project. In the end, the officer of warmwater fish of the Department of Fisheries mentioned that encouraging experts to implement such high-yield projects is from the needs of the current policy of the Department of Fisheries.