Synopsis (short abstract)The annual growth of the world's population makes it necessary to meet ever increasing demands for protein. The Government of Iran is therefore making great efforts to raise crop yields and the productivity of animal husbandry as well as to increase catches of sea fishing. It is also concerned with the development of fish culture which, given proper management, can be a highly profitable branch of economy and provide a means for increasing the country's total protein product. Field work has been carried out in the Isfahan area, Pulur area and the Caspian plains, investigating potentialities for construction and establishment of fish culture stations. Results of the investigations are included in this report which also contains recommendations on the construction of a fish culture station combining both experimental work and fish production in the Isfahan area; fish rearing in rice fields; fish hatcheries construction and utilization of village reservoirs for production of market-si ze fish, as well as suggestions for establishing fish culture stations on the rivers of Lar and Neka.