PROBLEM TO BE SOLVED: To obtain an egg-laying place and a propagating place for surface, middle and bottom layer fishes. SOLUTION: This submerged fish reef is provided by uniting discs installed with a U-shaped groove as a palm state, installing a groove 1 forming cylindrical state on uniting to bundle at the neck of the disc part 2 for reinforcing, installing a groove 3 as opening the palm, installing a wall plate part 4 opening radially at the both ends, and projecting body hole 5 and receiving hole 6, bending the central groove, banding the crossing part of bamboos, etc., banding at a narrow part 7 and the projecting hole 8, installing grooves 13, 15 for installation by a paraglider state single-winged submerged disc installed with a mooring projecting body 11 and mooring hole 12, and having an opening plate function, and banding at banding hole 16 to expand spaces between the submerged discs by getting tidal pressure on the disc curved surface. By joining a pseud algae-attached rope at the projecting hole 18, similar effect is obtained. By joining the joining holes 19 of in plurality of submerged discs, a gigantic cylindrical fish reef is obtained, and by joining a united submerged discs with the single-winged submerged disc, the pseud algae becomes an egg-laying place and the swimming aqueous area for young fishes increases to improve the fish reef effect. COPYRIGHT: (C)2004,JPO
