One of the world's largest freshwater fish Pirarucu, The huge body reaches over 3 meters, it is hard to keep at home. Let's easily reap such piraruk with an application. ■ Pirarucu, which grows quite large, Let's enjoy growing up and enjoy the figure. ■ Let's feed for food once every 3 days and let's love it. ■ Easy catching is easy operation just to trace the screen, it will spring infinitely in time. Foods exceeding the limit possession number are cashed at points. ■ In shop, you can purchase background and friends' fish using points and can mix in various combinations. Let's produce your own aquarium space.