| abstract |
Aquatic animals can be kept alive over a long period of time by utilizing the apparatus of the present invention comprising: n a water tank for containing aquatic animals and environmental water, which tank has an inside volume large enough to contain the aquatic animals in an amount greater than 200 kg per m 3 of the environmental water; n a control path for containing a portion of the environmental water, which control path is located outside the water tank and is connected to the water tank through a windraw pipe and a return pipe line, while containing therein the following means: n (1) means for controlling the temperature of the environmental water in the control path so that the temperature is maintained at a level as low as it is possible for the aquatic animals to exist, n (2) means for bringing the environmental water in the control path into contact with air, n (3) means for eliminating ammonia compounds from the environmental water, and n (4) means for eliminating water-soluble organic compounds from the environmental water, and; n a pump for recycling the environmental water through the water tank, the withdraw pipe line, the control path and the return pipe line. |