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 Crown shark (Sphyrna corona)

  Index
> Photo
> Range Map
> Systematics
> Name
> Appearance
> Coloration
> Distribution
> Biology
> Feeding
> Size
> Reproduction
> Similar Species
> Endangerment
> Danger to Humans

 Photo

Crown shark
No image of Crown shark found in the Shark Database
 Range Map

Earth Map


 Systematics

Phylum: Vertebates (Chordata)

Class: Carlilagenous Fishes (Chondrichthyes)
  Order: Ground sharks (Carcharhiniformes)
    Family: Bonnethead sharks (Sphyrnidae)
      Genus: Sphyrna (Sphyrna)


 Name

Scientific: Sphyrna corona
German: Korona-Hammerhai
English: Crown shark, Scalloped bonnethead, Mallethead shark
French: Requin-marteau cornu
Spanish: Cornuda coronada


 Appearance

Small. Moderately broad, anteriorly arched, mallet-shaped head with medial and lateral indentations on its anterior edge and transverse posterior margins. First dorsal fin is falcate, with origin just behind the pectoral fin insertions, and its free rear end approximately opposite or behind the pelvic fin origins. Second dorsal fin is slightly shorter than the anal fin, and ends ahead of the upper caudal origin. Precaudal pit present.

 Coloration

Grey, with white ventral surface.

 Distribution

Eastern Pacific: Gulf of California. Southern Mexico to Peru.

 Biology

A little-known species, rare. Lives on the continental shelf, probably inshore.

 Feeding

Unknown.

 Size

Average size between 60 cm and 70 cm, maximum total length about 90 cm. Probably the smallest hammerhead species of all.

 Reproduction

Viviparous, with yolksac-placenta. Litter size probably 2. Size at birth about 25 cm. Males reach sexual maturity with 65 cm, unknown for females.

 Similar Species

Can only be mistaken for the that has a different distribution.

 Endangerment

Status in the IUCN Red List(Version 2001):

Main criterion: > NT (Near Threatened)
Sub criterion:
Trend: Unknown


 Danger to Humans

Harmless.



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