This classic German folktale tells the story of a poor fisherman and his wife who live in a small cottage by the sea. After the fisherman catches a magical fish, his wife demands more and more from the fish, eventually wishing for a castle and all the riches that come with it. The
From Wikipedia
"The Fisherman and His Wife" is a German fairy tale collected by the Brothers Grimm in 1812. The tale is of Aarne–Thompson type 555, about dissatisfaction and greed. It may be classified as an anti-fairy tale.