Billfish - Wikipedia
https://en.wikipedia.org/wiki/Billfish
The term billfish refers to a group of predatory fish characterised by prominent bills, or rostra, and by their large size; some are longer than 4 m (13 ft). Billfish include sailfish and marlin, which make up the family Istiophoridae, and swordfish, sole member of the family Xiphiidae.
What are billfish? - The Billfish Foundation
www.billfish.org/education/what-are-billfish/
In General Terms- The term “Billfish” refers to various predatory fish species typically belonging to the taxonomical family Istiophoridae. Their biological characteristics include a spear-like rostrum or “bill,” which is used for slashing at and stunning prey.
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