Topknot may refer to: A hairstyle or haircut, historically prevalent in East Asia:Chonmage, a traditional Japanese haircut worn by menSangtu, a knot of hair that married men of Joseon wore Several species of fishes: The New Zealand topknot, Notoclinus fenestratus. The Norwegian topknot, Phrynorhombus norvegicus. The Brown topknot, Notoclinus compressus. Several species in the genus Zeugopterus.… (More on Topknot)