Provided is an arch-shaped artificial fish reef which induces coadunation of seaweeds, functions as a spawning ground and a nursery ground for fry and spat, and can maintain a stable structure even in various configuration of sea bottom. In the present invention, provided is an arch-shaped artificial fish reef comprising: an arch-shaped main body in a ferroconcrete structure having a protrusion part formed radially and longitudinally on the top and a penetrating hole which connects the front side and the rear side an upwelling hole formed on the top of the arch-shaped main body to vertically communicate with a tunnel, thereby allowing the light of the sun to reach the tunnel to promote photosynthesis of seaweeds and also allowing sea currents in the tunnel to circulate smoothly a side entrance formed on the side of the arch-shaped main body to communicate with the tunnel, thereby allowing sea currents in the tunnel to circulate smoothly and allowing aquatic animals to easily move and hide a fastening piece insertion hole formed perpendicularly to the ground so as to allow a fastening piece of a horizontal control plate to be inserted into the bottom of the main body a support part supporting the arch-shaped main body on the bottom of the arch-shaped main body and having the fastening piece insertion hole to connect the horizontal control plate with the support part so as to maintain level against the slope of the sea bottom and the horizontal control plate comprising the fastening piece of a fixed length inserted into the fastening piece insertion hole and a bottom plate connected to the fastening piece at a fixed angle.COPYRIGHT KIPO 2016본 발명은 상부에 방사각의 길이방향으로 돌출부를 갖고 정면과 후면을 잇는 통공이 형성된 철근콘크리트구조의 아치형본체, 상기 아치형본체의 상부에 터널과 수직으로 연통되도록 형성되어 태양광이 터널까지 도달하여 해조류의 광합성작용을 촉진함과 동시에 상기 터널 내의 해류 소통을 원활하게 하도록 하는 용승공, 상기 아치형본체의 측면에 터널과 연통되도록 형성되어 상기 터널 내의 해류 소통을 원활하게 하고, 수산동물의 이동과 은닉을 용이하게 하는 측면출입구, 상기 본체 하면에 수평조절판의 걸림쇠가 삽입될 수 있도록 지면과 수직으로 형성된 걸림쇠삽입공, 상기 아치형본체의 하부에 아치형본체를 지지하며 해저
