Kerala sole fish, known locally as Manthal (മാന്തൾ) or Nangu (നങ്ക), is a popular flatfish in Kerala, India, prized for its delicate, flaky flesh, mild sweet flavor, and versatility in cooking, commonly prepared as spicy curries, fries, or roasts, often with coconut and local spices, offering lean protein and omega-3s. 
Key Characteristics:
Type: A flatfish from the Sole family (Solea solea).
Texture: Light, soft, and flaky when cooked.
Flavor: Mild and slightly sweet.
Local Names: Manthal (മാന്തൾ), Nangu (നങ്ക), Elachil, Mangu.