Sailfish

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This article is about the fish. For the submarines, see USS Sailfish.
Sailfishes
Fossil range: 14–0 Ma
Middle Miocene to Present[1]
Indo-Pacific sailfish, Istiophorus platypterus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Istiophoridae
Genus: Istiophorus
Lacépède, 1801
Species: I. albicans, I. platypterus
Binomial name
Istiophorus albicans,
Istiophorus platypterus

Latreille, 1804,
Shaw, 1792

Sailfish are two species of fishes in the genus Istiophorus, living in warmer sections of all the oceans of the world. They are blue to grey in color and have a characteristic erectile dorsal fin known as a sail, which often stretches the entire length of the back. Another notable characteristic is the elongated bill, resembling that of the swordfish and other marlins. They are therefore described as billfish in sport fishing circles.

Both species of sailfishes grow quickly, reaching 1.2-1.5 m (4-5 ft) in length in a single year, and feed on the surface or at mid-depths on smaller pelagic forage fish and squid. Individuals have been clocked at speeds of up to 110 km/h (70 mph), which is the highest speed reliably reported in a fish.[2] Generally, sailfish do not grow to more than 3 m (10 ft) in length and rarely weigh over 90 kg (200 lb).

The sail is normally kept folded down and to the side when swimming, but it may be raised when the sailfish feels threatened or excited, making the fish appear much larger than it actually is. This tactic has also been observed during feeding, when a group of sailfish use their sails to "herd" a school of fish or squid.

Sailfish are highly prized game fish and are known for their incredible jumps. The sailfish also turns its body light blue with stripes when excited, confusing some fish and making it easier to catch prey.

Contents

[edit] Species

[edit] Gallery

[edit] References

  1. ^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology 364: p.560. http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class. Retrieved 2008-01-08. 
  2. ^ Haulin' Bass - elasmo-research.org. Accessed March 19, 2008

[edit] External links