In this study, competitive perception in marine fish culture industry in Turkey was investigated. Study objective is to uncover; how aquaculture enterprises, feed producers, processing enterprises, ministry employees, universities, retail businesses, research institutes and employees working for suppliers involved in the sector, perceiving the increased competition in the marine fish culture industry. Survey prepared for this purpose was conducted with 344 people. Results are evaluated and interpreted both separately and in total according to business types in the sector. It has been determined that the bargaining power of suppliers and buyers in the sector is high and the threat of substitute products is low. In order to break the bargaining power of buyers who are competitive in the sector, it is necessary to find new export markets and to grow the market by making efforts to increase domestic consumption. The use of joint supply resources, especially by small and medium-sized businesses by the producer associations and cooperatives channel, and joint product offer to the market will both reduce the power of the suppliers and provide benefit to the companies for competition with existing firms.