| 摘要 |
PROBLEM TO BE SOLVED: To provide a fish box which has a comfortable living and resting space by an inorganic earthenware pipe in a fish reef block and pays attention to environment and is made of a material comprising charcoal, bamboo charcoal, and shellfish pieces. SOLUTION: A fish reef block comprising an earthenware pipe, charcoal, bamboo charcoal and shellfish pieces is not found in a conventional concrete fish reef. Fish and shellfish are hardly influenced by an alkali component in the fish box, and a surface is rough, so that the fish box has a living and resting space by an inorganic earthenware pipe 2 which is effective for egg-laying and implantation. The fish box incorporates charcoal 3, bamboo charcoal 4, and shellfish pieces 5 which are useful for water cleaning and friendly for environment. COPYRIGHT: (C)2007,JPO&INPIT
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