👉 The term "billfish" is a common and widely recognized name for a species of fish that are native to the Pacific Ocean in Japan, China, Korea, and some other parts of Asia. These fish have distinctive bills, which can be as long as 20 feet (6 meters) long and often feature sharp teeth and claws. They are known for their large size, powerful jaws, and ability to swim with incredible speed and agility. Billfishes are highly adaptable species that can inhabit