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 Smalltail shark (Carcharhinus porosus)

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

 Photo

Smalltail shark
No image of Smalltail 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: Carcharhinus (Carcharhinus)


 Name

Scientific: Carcharhinus porosus
German: Atlantischer Zwerghai
English: Smalltail shark
French: Requin tiqueue
Spanish: Tiburón poroso


 Appearance

Small requiem shark, with a moderately long and pointed snout. Eyes are large (diameter about 1.6 to 2.5% of total body length). First dorsal fin is large and falcate, bluntly rounded apex. Origin over the inner margins of the pectorals (can also be found slightly posterior to pectoral insertion). Second dorsal fin relatively low (2.2 to 2.8% of the shark"s total body length). Origin over or slightly behind the midbase of the anal fin. Small pectoral fins, falcate and narrowly rounded or pointed. No interdorsal ridge present.

 Coloration

Grey upper body, light ventral surface. Tips of pectoral, dorsal, and caudal fins sometimes have inconspicuous dusky or blackish marks. Sometimes have an inconspicuous white band on flanks.

 Distribution

Western Atlantic: Northern Gulf of Mexico to southern Brazil (probably not in the Caribbean). Eastern Pacific: Gulf of California to Peru.

 Biology

A common shark of the continental shelf, swims preferably near the bottom, down to at least 35 m. Prefers muddy bottoms and estuaries.

 Feeding

Feeds on fishes, to a lesser extent on invertebrates (shrimp).

 Size

Maximum size about 130 cm, average size between 90 and 110 cm.

 Reproduction

Viviparous, with yolksac-placenta (gives birth to live young). 2 to 9 pups per litter. Gestation period probably 10 months and more. Males reach sexual maturity at about 75 cm, females at about 85 cm. Size at birth between 30 and 40 cm.

 Similar Species

Other small requiem sharks look very similar and taxonomic features should be used to clearly distinguish between the species.

 Endangerment

Status in the IUCN Red List:


No Entry found in Red List.


 Danger to Humans

Harmless.



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