The present invention utilizes the endothermic and exothermic functions of the Peltier element as thermoelectric semiconductors to simultaneously perform the heating and cooling of the aquaculture water while applying the power of the wind power / solar power system as the power source to the freshwater eel The present invention relates to a water supply system for a freshwater eel so as to remarkably reduce the expense of water temperature control. According to a preferred embodiment of the present invention, the aquaculture water supply system includes a wind power generation system for supplying power for cooling and warming the aquaculture water supplied to the aquarium, a solar power system, a wind power generation system, (AC) / direct current (DC) conversion unit for converting a power source of the rechargeable battery to an alternating current (AC) / direct current (DC) A water supply water supply tank in which a water supply water cooling and heating water cooled and warmed by a power supply supplied via the power supply switching unit is supplied and a water supply water on-chamber is supplied to the water supply water supply tank, A control unit for controlling mixing of the aquaculture water cooled and warmed by the aquaculture water temperature regulating element, a control unit for controlling mixing of the aquaculture water heated by the aquaculture water temperature regulating element, A mixing water tank for mixing the cooling water and warm water under control of the control unit and supplying water to the aquaculture water tank.본 발명은 열전반도체로서의 펠티에소자의 흡열 및 발열기능을 활용하여 양식수의 가온 및 냉각작용이 동시에 행해지도록 하면서 전원으로는 풍력/태양광 발전계의 전원을 상시전원으로 적용하여 민물뱀장어 양식의 양식수 온도제어에 소용되는 경비를 현저하게 절감할 수 있도록 하기 위한 민물뱀장어의 양식수 공급 시스템에 관한 것이다.바람직한 실시예에 따르면, 상기 양식수 공급 시스템은 양식수조에 공급되는 양식수의 냉각 및 가온의 전원을 공급하기 위한 풍력발전계와 태양광발전계 및 그 풍력발전계와 태양광발전계에서 발전된 전원이 충전되는 충전지와, 교류(AC)전원을 직류(DC)로 변환하여 공급하는 교류(AC)/직류(DC)변환부 및, 상기 충전지의 전원과 상기 교류(AC)/직류(DC)변환부의 전원을 스위칭하는 전원스위칭부, 상기 전원스위칭부를 경유하여 공급되는 전원에 의해 냉
