This report describes the effects of swimming speed and seawater temperature on oxygen consumption of Takifugu rubripes, Pagrus major, and Girella punctata as a basic study for practical realization of an enclosed circulating flow type land culture. The following results were obtained. (1) The relationship between swimming speed and oxygen consumption shows two cases : that in which oxygen consumption increases gradually with swimming speed； and that in which oxygen consumption increases drastically with swimming speed. (2) Oxygen consumption increases with seawater temperature, except for Takifugu rubripes at 30℃. (3) The maximum swimming speeds, those at which maximum oxygen consumption is obtainable, for Takifugu rubripes, Pagrus major, and Girella punctata at 20℃ are, respectively, 2.5, 3.5 and 3 body lengths per second. (4) Results suggest that the breeding flow rate fit for flowing cultivation for Takifugu rubripes is 1-1.5 body lengths per second； that for Pagrus major and Girella punctata is 1.5 body lengths per second.