Problem to be solved: to provide a breeding system for aquatic organisms capable of stabilizing dissolved oxygen concentration of the rearing water in the supersaturation state and breeding method of aquatic organisms.The aquatic system rearing system 100 is provided with a first supply portion for supplying oxygen saturated water W1 saturated with dissolved oxygen concentration to a breeding water tank 10 and a high oxygen concentration water W2 having dissolved oxygen concentration higher than oxygen saturated water W1 to a breeding water tank The second supply portion is provided. The second supply portion may supply the high oxygen concentration water W2 from the bottom of the breeding tank 10.Diagram【課題】飼育水の溶存酸素濃度を過飽和状態で安定させることができる水生生物の飼育システム及び水生生物の飼育方法を提供する。【解決手段】水生生物の飼育システム100は、溶存酸素濃度が飽和した酸素飽和水W1を飼育水槽10に供給する第1の供給部と、酸素飽和水W1よりも高い溶存酸素濃度を有する高酸素濃度水W2を飼育水槽10に供給する第2の供給部と、を備える。第2の供給部は、飼育水槽10の底部から高酸素濃度水W2を供給する、こととしてもよい。【選択図】図1
