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 Daggernose shark (Isogomphodon oxyrhynchus)

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

 Photo

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

Earth Map


 Systematics

Phylum: Vertebates (Chordata)

Class: Carlilagenous Fishes (Chondrichthyes)
  Order: Ground sharks (Carcharhiniformes)
    Family: Requiem sharks (Carcharhinidae)
      Genus: Isogomphodon (Isogomphodon)


 Name

Scientific: Isogomphodon oxyrhynchus
German: Dolchnasenhai
English: Daggernose shark
French: Requin becune
Spanish: Cazon picudo


 Appearance

General features of a typical requiem shark but with an extremely long, flattened and pointed snout. Very small eyes (circular). No spiraculi. First dorsal fin erect. Origin of first dorsal fin over midbase of pectorals. Second dorsal fin comparably large, about half the height of first dorsal fin. Origin over or slightly anterior to the anal fin"s origin. Very large paddle-like pectoral fins. No interdorsal ridge present.

 Coloration

Grey to brownish upper body, white ventral surface. No conspicuous colour patterns.

 Distribution

Western Atlantic: Trinidad, Guayana, Surinam, French Guinea.

 Biology

A little known species. Supposedly frequently seen in estuaries and river mouths, and over rocky bottoms.

 Feeding

Small schooling fishes. The long snout and small eyes are possibly adapted for getting prey in murky water, though not yet proven.

 Size

Maximum size may be as much as 244 cm, although not confirmed yet. Largest measured species was 152 cm.

 Reproduction

Viviparous, with yolksac placenta (gives birth to live young). 4 pups per litter. Size at birth between 38 to 41 cm. Males reach sexual maturity with about 95 cm, females with about 110 cm.

 Similar Species

No other species possesses the combination of this very long snout and the paddle-like pectoral fins.

 Endangerment

Status in the IUCN Red List:


No Entry found in Red List.


 Danger to Humans

Harmless.



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