| 摘要 |
PROBLEM TO BE SOLVED: To provide an artificial fish-breeding reef which is suitable for fishes and shellfishes, breeds, promotes the propagation of microorganisms and algae to become feed for fishes and shellfishes and has excellent fish-luring effect, in the artificial fish-breeding reef using seashells. SOLUTION: This artificial fish-breeding reef is composed of a concrete body 1 being an approximately three-dimensional frame body, an upper bed plate 2 and a middle bed plate 3 each having a surface in which a plurality of seashells are embedded. In the upper bed plate 2 and the middle bed plate 3, the plurality of seashells are embedded in concrete in a fixed depth so as to make the adjoining seashells approximately in parallel before hardening of concrete placed in a mold, thereafter the concrete is demolded and arranged as the concrete body 1. The artificial fish-breeding reef is obtained by using generally scraped scallop seashells, or the like, attaching microorganisms and spores of algae to become feed for extremely more fishes and shellfishes to the surfaces of a plurality of seashells and which forms gaps between the surface of the upper bed plate 2 or the middle bed plate 3 and the seashells. The gaps are preferable habitats and refuge places for small fishes and fries. COPYRIGHT: (C)2004,JPO
|
