The study was conducted to find out the feasibility of freshwater aquacultures based on the maintenance instrumnets, differentiation of financial institutions type were selected, and reasons of choosing to cooperate with formal and informal finacial institution Descriptive method with direct observation and interview technic was used to collect the data. The purposive locations were choosed, there are Karang intan, Martapura and Aranio districts and respondent sample taked by simple random method. Data was analyzed by farm feasibility analysis, chi square analysis and descriptive analysis. The result shows that the three of freshwater aquaculture systems (pond, karamba and floating net) were feasible with present interest rate. Each freshwater farmers selected different financial institution as their financial source. But during development of the farms, most of them were using informal finacial institution source because of its easier and quickest process. While most of both floating net and karamba farmers were choosed formal financial institution because it gave them management extention.