The significant development of aquaculture in Greece has been favoured not only by its optimal geo-climatic conditions, but also by the favourable motives/incentives which have been established during 1980-90 both by the EEC and the local Ministry of Agriculture, as well as by the Agricultural Bank of Greece. The EEC and Greece have offered some incentive/grants for the establishment of aquaculture units and a limited number of grants for the operation and management of establishments. The banks have also granted funds to investors and always under specific conditions. The granted funds should be paid back to the bank, together with their respective interest charges, to have new fund allocations secured. Nowadays, despite all these favourable motives/incentives, many aquaculture sub-sectors have reached a marginal level of productivity/profitability. When producers do not reach their objectives, the loans are not paid on time, the interest rates are accumulated, the cost of loan acquisition becomes higher and banks become 'hostile' by interrupting their financing. All the above results in the stagnation and the drawback of the development of aquaculture and the closing down of business. Therefore, the re-organization and the re-engineering of many businesses are necessary, focusing on the application of new policies, methods and decision-making processes. In order to avoid difficult situations such as the bankruptcy of businesses and the slowing down of the development of the aquaculture sector, a very close cooperation of scientists, producers and their organization, together with the banks is necessary, not only within each country, but also within the EEC.