The present invention enlarges the size of the entrance port of the main body to the same or similar size as the main body to increase the size of the captured fish relative to the size of the fish caught in the conventional conical shape, to enhance the sense of pleasure, the closing means and the imaging means to the main body And by configuring the control means, to selectively capture the fish caught in the body from the outside to achieve the desired fish capture. To this end, the present invention, in the fish tank to attract or catch fish by catching or fixing the food on one side of the main body to immerse the main body in the water, at least one or more inlet (12), and the inlet (12) A main body (10) configured with an opening / closing door (14) for opening and closing the return door and a return spring (16) for providing an elastic force to the opening / closing door (14)； The entrance opening 12 of the main body 10 is formed to be the same size or similar to the size of one side of the main body 10； One side of the main body 10, the opening and closing means 20 to provide an intermittent force to the opening and closing door 14 to selectively close the entrance opening 12 through the opening and closing door 14； A photographing means (30) configured on one side of the main body (10) to photograph fish attracted and entered into the main body (10)； And control means 40 which receives the image photographed through the photographing means 30 and provides a closing signal to the opening and closing means 20 to selectively control the catch of the fish in the main body 10. It characterized in that it includes；본 발명은 본체의 진입구 크기를 상기 본체와 동일 또는 유사한 크기로 확대시킴에 따라 종래의 원뿔형으로 형성되는 어항에 비해 상대적으로 포획 물고기의 크기에 확대시켜 유희감을 증진시키고, 본체에 폐쇄수단과 촬영수단 및 제어수단을 구성하여, 외부에서 본체 내에 포획되는 물고기를 선별적으로 선별하여 원하는 물고기의 포획을 이룰 수 있는 데 그 목적이 있다. 이를 위해, 본 발명은, 본체의 일측에 먹이를 걸림 또는 고정시킨 후 상기 본체를 물속에 담수시켜 물고기를 유인 및 포획하도록 하는 어항에 있어서, 적어도 하나 이상의 진입구(12)와, 상기 진입구(12)를 개폐시키는 개폐문(14) 및 상기 개폐문(14)에 탄성력을 제공하는
