Abstract
The aim of this study is to utilization substitute and reproduction by a seaweed flora damage, a decline of the fauna on the seaweed. This study on artificial fish reef use a gin block(30 cm×30 cm), four experience plate(Fig. 3, Blank(no plate), flyashi (4 cm×4 cm:B), flyashi and charcoal (4 cm×4 cm:C), flyashi and charcoal(10×20:D)) is disposed inside the inter frame and fixed at 4 cm of intervals(C, D).
This fish reef, B and C have much biomass, approximately equal to a contrast point (F, G), an attached algal coating rate, increased with progress of the time, not the fall, too. It was revealed that the artificial fishing bank sufficiently functioning as a fishing bank in an early stage after being sunk in water.
