| 摘要 |
PURPOSE: To raise fishes in seawater containing plankton by incubating spawn in a tray having a holding hole, guiding incubated swimming fishes into a 1st partition chamber, further, guising grown swimming fishes into a partition chamber composed of a net and hanging down that partition chamber into the sea. CONSTITUTION: The spawn is arranged in a tray 22 having a holding hole 52 for spawn 51 of swimming fishes and until the incubated swimming fishes pass through the holding hole 52 together with a seawater current, fresh seawater containing plankton is supplied through the tray 22. The incubated swimming fishes are guided into a 1st partition chamber 25 connected to that tray together with seawater. Further, the grown swimming fishes are guided together with seawater by connecting the 1st partition chamber 25 to the partition chamber, with which more larger grown swimming fishes are stored but much larger fishes can not move in, composed of a net 27 of sufficiently fine mesh. That net partition chamber is sunk in the sea and moved as needed, and the net partition chamber is hung down and supported by a propelling type foating body for moving the net partition chamber to the zone of fresh seawater containing plankton. |
