What mood pervades the story of trout?

The story of trout is predominantly characterized by a sense of nostalgia, longing, and melancholy. The narrator reflects on his past experiences with fishing for trout, evoking a sense of loss and a yearning for simpler times. The descriptions of the natural surroundings and the atmosphere of the fishing trips invoke a sense of peace, serenity, and a deep connection with nature. However, there is also a melancholic undercurrent as the narrator reflects on the fleeting nature of these moments and the changes that time brings. The emotions conveyed in the story create a poignant and contemplative mood.