With the efforts of the Organization of Agriculture- Jahad of the province, the various stages of the aquaculture extension project of cage fish farming (in the Caspian Sea) have been filmed as a documentary program by the Mazandaran Broadcasting Organization of the Islamic Republic of Iran Broadcasting in Royan city on the model farm designated for rainbow trout farming in floating marine cages with the presence of the farm manager, Mr. Hosseini, the representative of the Department of Fisheries and Mr. Samami, the top cage fish farmer of the country in 2018.