To provide an auxiliary facility for forming an internal space adaptable to the habits of object organisms, solving the drawbacks including interstice shape and cloggings involved in natural stones being in use as bases for a stone-cast fishery intended for root-taking large-sized fishes including lobster and "Ara" (scientific name: Niphon spinosus), and to design a fishery facility arranged with the above auxiliary facilities.
The auxiliay facility is such that a frameform structure of tunnel shape with hollow inside and branched depth as shown in the Figure 1 is installed and covered with natural stones to form an internal space which is wide, deep, slight in clogging and compatible with defending invaders and therefore optimum for root-taking large-sized fishes including lobster and "Ara" (scientific name: Niphon spinosus). By arranging a plurality of these auxiliary facilities in a stone-cast fishery, an ideal fishery with an optimally fish-living space formed therein can be created efficiently at low cost.
FUKUSHIMA JUNYA
TAKENAGA SUMIJI
FUKUSHIMA JUNYA
TAKENAGA SUMIJI
| JPS62115224A | 1987-05-26 | |||
| JP2001103862A | 2001-04-17 | |||
| JPS6384430A | 1988-04-15 | |||
| JPH0667529U | 1994-09-22 | |||
| JP2000116268A | 2000-04-25 | |||
| JPS6240967B2 | 1987-09-01 |
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