Alfred

The son of a sailor, 5-year old Arthur lives a quiet life on an oceanside cliff with his brother Francis. One fateful day, he finds a beautiful goldfish trapped in a bottle on the beach and upon rescuing him, names him Alfred. But he is no ordinary goldfish. The son of a masterful wizard and a sea god, Alfred uses his father's magic to transform himself into a young boy and quickly falls in love with Arthur, but the use of such powerful sorcery causes a dangerous imbalance in the world. As the moon steadily draws nearer to the earth and Alfred's father sends the ocean's mighty waves to find his son, the two children embark on an adventure of a lifetime to save the world and fulfill Alfred's dreams of becoming human.(literally just changed the description for Ponyo lol also sorry the cover isn't UsUk but it was the best I could find and I can't draw)