Billfish

Billfish

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Description

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The term billfish is applied to a number of different large, predatory fish characterised by their large size (swordfish can be over 4 metres long) and their long, sword-like bill. Billfish include the sailfish and marlin, which make up the family Istiophoridae, and the swordfish, sole member of the family Xiphiidae. They are important apex predators feeding on a wide variety of smaller fish and cephalopods. While billfish are most common in tropical and subtropical waters, swordfish in particular are sometimes found in temperate waters as well. Billfish are characterized by a long spearlike or swordlike upper jaw or beak that may be used to stun prey during feeding; although this bill has been employed in apparent aggression to spear objects, including boats, it is not deliberately used to spear prey. These species are pelagic, migratory, and found in all oceans.show more

Product details

  • Paperback | 52 pages
  • 152 x 229 x 3mm | 91g
  • Equ Press
  • United States
  • English
  • 6136632276
  • 9786136632278