Sayori needlefish, also known as Trichiurus japonicus, are commonly found in the Pacific and Indian Oceans. These fish are known by various names in different cultures and regions. In Japan, they are called sayori, which means "little bird," because of their beak-like mouth. In Hawaii, they are known as needlefish or houndfish and are popular game fish among recreational anglers. Other synonyms for sayori needlefish include beltfish, ribbonfish, hairtail, and cutlassfish, reflecting their elongated, ribbon-like body shape. These unique fish have a distinct flavor and are commonly used in Japanese cuisine, such as sushi or sashimi.