Billfish—which include swordfish (family Xphiidae), marlin, sailfish, and spearfish (all members of the family Istiophoridae)—are best known for their prominent bills which they use to catch fish, squid, and other forms of prey. What else is cool about billfish? Here’s a practical guide to the predatory fish. info viapbs.org
Some conversions from the infographic:
Black Marlin 1.5m to 4.6m in length and up to 699kg
Swordfish 1.2m to 4.4m in length and up to 540kg
Sailfish 1.0m to 3.1m in length and up to 58kg
White Marlin 1.3m to 2.7m in length and up to 82kg
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