Articles on this page are available in 1 other language: Arabic (12) (learn more)

Overview

Comprehensive Description

Biology

A coastal-pelagic shark. Feeds on fishes, especially bony fishes, and also benthic and epibenthic cephalopods. Viviparous, with 24 to 28 young in a litter. Size at birth about 30 to 32 cm.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Distribution

Eastern Atlantic: Senegal to Congo. Not in Compagno's 1999 checklist (Ref. 35766).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Eastern Atlantic: Senegal to Congo.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Physical Description

Size

Maximum size: 3000 mm TL
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Max. size

300 cm TL (male/unsexed; (Ref. 244))
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Ecology

Habitat

Environment

benthopelagic; marine
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Trophic Strategy

A coastal-pelagic shark. Feeds on fishes, especially bony fishes, and also benthic and epibenthic cephalopods.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Life History and Behavior

Life Cycle

Viviparous, placental (Ref. 50449).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Conservation

Threats

Not Evaluated
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: subsistence fisheries
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Wikipedia

Whitefin hammerhead

The whitefin hammerhead (Sphyrna couardi) is a species of hammerhead shark, and part of the family Sphyrnidae, found in the tropical waters of the northeastern Atlantic Ocean, from Senegal to the Congo region.[1] According to Cadenat and Blanche (1981), some specimens associated with the smalleye hammerhead (Sphyrna tudes) are in fact of the whitefin hammerhead, which would extend the range of this species into the Mediterranean Sea.[2] McEachran and Serret (1986) synonymized this species with the scalloped hammerhead (Sphyrna lewini).[3]

In appearance the whitefin hammerhead is very similar to the scalloped hammerhead, with a moderately broad, narrow-bladed head (width 21-25% of total length). The front margin of the head is broadly arched, with prominent indentations in the middle and sides. The first dorsal fin is tall and falchate (sickle-shaped), while the pelvic fins are not falchate with straight or slightly concave rear margins. The anal fin is low and long, with a deep notch in the rear margin. The color is blue-grey or grey-brown above, white below. It is distinguished from the scalloped hammerhead in that its head lobes are longer and less wide, the origin of its first dorsal fin are over the pectoral fin midbases, and there are no dark tips on its pectoral fins. Its maximum size is said to be about 3 m long; adult males typically range from 141-184 cm, and adult (gravid) females 230-235 cm.[2]

The whitefin hammerhead mainly feeds on benthic bony fishes, such as eels and flatfishes, as well as cephalopods. As with other hammerheads, they are viviparous, with the young nourished by a yolk sac placenta. Litters range from 24-28 pups, measuring 30-32 cm long or more. It is not known to have attacked people. This species is caught by West African fisheries but details are unknown.[2]

References[edit]

  1. ^ Froese, Rainer and Pauly, Daniel, eds. (2006). "Sphyrna couardi" in FishBase. May 2006 version.
  2. ^ a b c Compagno, Leonard J. V. (1984) Sharks of the World: An Annotated and Illustrated Catalogue of Shark Species Known to Date. Rome: Food and Agricultural Organization. ISBN 92-5-101384-5.
  3. ^ Martin, R. Aidan. (February 24, 1998). Recent Changes in Hammerhead Taxonomy. ReefQuest Centre for Shark Research. Retrieved on October 18, 2008.
Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Unreviewed

Article rating from 0 people

Default rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!