Thalassoma bifasciatum is a species of a brightly colored fish found primarily in the Caribbean. The common name for Thalassoma bifasciatum is bluehead wrasse, but this species has other nicknames such as blue-headed wrasse, bluehead parrotfish, and bluehead. These names all refer to the distinctive blue coloration on the head of the fish, which contrasts with its green or brown body. Additionally, this fish species is known by the scientific name Thalassoma bifasciatum, meaning it has two distinct bands or stripes on its body. With its striking coloration and unique name, the bluehead wrasse is a popular species among marine enthusiasts and researchers alike.