Here are some key details about merpeople in *Goblet of Fire*:
* Appearance: They have human-like torsos, but with tails instead of legs. Their skin tones and hair color vary, just like humans. They also have gills and can breathe underwater.
* Culture: They have their own language and a complex society, including a king and queen. They are known for their beauty and their love of music.
* Abilities: They are skilled swimmers and can use magic, although their spells tend to be water-based.
* Role in the story: The merpeople play a significant role in the second task of the Triwizard Tournament, where Harry must retrieve a golden egg from the depths of the lake. They also serve as guardians of the lake and its secrets.
While they might not be true mermaids, merpeople are a fascinating and integral part of the magical world in *Harry Potter and the Goblet of Fire*.