| 摘要 |
PROBLEM TO BE SOLVED: To provide a pisciculture case that protects small fishes from a foreign enemy and makes aquatic animals such as insects, etc., to be feeds live in the case. SOLUTION: The front opening 3b of a body 3 made of concrete is provided with a fence 5 and the inside of the body is divided into front and rear spaces 7 and 8 by a screen 6. The front space 7 is tightly packed with big cobblestones 9. The rear space 8 is a space for small fishes and several tubes 10 are arranged in the longitudinal directions so as to make small fishes come in and out from the outside. COPYRIGHT: (C)2006,JPO&NCIPI
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