PURPOSE: To attain the role of a revetment as the slope protection, to operate a main body as a gathering place for fish and to provide a place for the living and spawning for fish by planting an aquatic plant by a method wherein the inside of the main body is hollowed and the left and the right are opened, the upper section of a front is formed in an opening section and a recessed section is formed to a top face while a through-hole is bored to a bottom section.

CONSTITUTION: The inside of a main body 1 is hollowed 2, and the left and the right of the hollow 2 are opened. The upper section of a front is formed in an opening section 3. A recessed section 4 is shaped to a top face, and a through-hole 5 is bored to a bottom section. The main body 1 is placed on a foundation, and slope-face blocks are laid from the upper rear surface of the main body 1, thus forming the face of a slope. The recessed section 4 is filled with soil and sand, and an aquatic is planted. Accordingly, natural environment is maintained and a landscape is created while the main body can be effective as the gathering place for fish.