This study aims to present and examine the views among fishermen with different socio-demographic and socio-economic backgrounds (i.e., age, education level, annual income and source of income), fishing in four important inland fishing grounds in Turkey, namely Marmara Lake-Demirköprü Dam Lake (Manisa Province) and Eğirdir Lake- Beyşehir Lake (Isparta Province). The following key points are emphasized; a) Problems in inland fisheries b) Potential reasons of decrease in natural fish stocks c) Problem solutions and recommendations to improve the inland fisheries. The data obtained from a survey administered to 59 fishermen was evaluated using the Non-Linear Canonical Correlation Analysis method. According to the findings of the study: a) The most important problems encountered in fisheries; according to the fishermen with high education level, while the marketing and changes in the water level of the lakes, the fishermen with low education and income level, unlicensed hunting, the lack of punishment and electric hunting are problems b) Fishermen with a high level of education think that fishing with illegal fishing gears during the prohibited fishing season, and those with a low level of education and income are of opinion that small fishing is an important factor in the decrease of natural fish stocks c) Fishermen with high education-income sources adopt the idea of improving legal regulations and complying with them, whereas fishermen with a low-level of education and income think that problems in marketing should be eliminated as a solution to the problem in the fisheries. Results indicate that increasing the effectiveness of the practices that consider the opinions/suggestions of fishermen will contribute to the management and sustainability of fisheries in the region