The aim of this work was to determine the economic profitability of three different products, i.e. different consumption masses of farmed sea bass (Dicentrarchus labrax) (up to 400g, 600 to 800g and over 1000g) related to cage and recirculation production technology, and to determine the profitability and possibility of product diversification and market placement. The technology of breeding bass in cages and the technology of RAS have their advantages and disadvantages, which should be used, and the possibility of their combination should be investigated. The production of fish from 600 to 800g, which is optimal in diversifying products and adding value in the development of new products, requires adaptation of cage farming to avoid a second winter in the breeding process and reduce the profitability of production. Production in the RAS requires the construction of expensive facilities and the purchase of expensive equipment, but it shortens the production process and enables the production of the desired seabass fishery by simply extending the production process. While the capital costs of the construction of the RAS exceed the construction of the cage farm, the production price is not significantly different, but the production cycle in the RAS is significantly shorter. The combination with cage farming could become one of the solutions to the problem of producing sea bass of the desired weight at acceptable production prices.