PROBLEM TO BE SOLVED: To provide an aquaculture system in which a large number of atomized small water droplets dissolved of oxygen is directly mixed in freshwater or seawater without being performed by air bubbles to increase the dissolved oxygen amount, the freshwater or seawater in an aquaculture water tank 9 at low cost by using a constant temperature water tank 6 using heat of the ground, and the freshwater or seawater is pumped up by using an air lift pump 7 for using air bubbles without generating noise from the bottom easily and at low cost furthermore, and thereby is circulated and fed in the aquaculture water tank.SOLUTION: An aquaculture system 1 comprises an air inlet 2, a compressor 3, an air introduction passage 4, an air cooling water droplet appearance oxygen dissolution device 5, a constant temperature water tank 6, an air lift pump 7, a gas-liquid mixture fluid introduction passage 8, and aquaculture water tank 9, etc.SELECTED DRAWING: Figure 1
