Billfish

Group of ray-finned fishes

The billfish are saltwater predatory ray-finned fish from the superfamily Xiphioidea, characterised by prominent pointed bills (rostra), and by their large size; some are longer than 4 m (13 ft). Extant billfish include sailfish and marlin, which make up the family Istiophoridae; and swordfish, sole member of the family Xiphiidae. They are often apex predators which feed on a wide variety of smaller fish, crustaceans and cephalopods.

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