Girish Mahajan (Editor)

Borneo river shark

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Kingdom  Animalia
Family  Carcharhinidae
Scientific name  Glyphis fowlerae
Higher classification  River shark
Order  Carcharhiniformes
Superorder  Selachimorpha
Genus  Glyphis
Phylum  Chordata
Rank  Species
Subclass  Elasmobranchii
Borneo river shark httpsuploadwikimediaorgwikipediacommonsthu
Similar  Irrawaddy river shark, River shark, Broadfin shark, Whitenose shark, Grey sharpnose shark

The Borneo river shark (Glyphis fowlerae) is a species shark of the family Carcharhinidae known only from the Kinabatangan River in Borneo. It can reach a length of 78 centimetres (31 in). Reproduction is presumed to be viviparous. Only 13 specimens are known to science collected in 1996. Expeditions in 2010 and 2011 failed to find any and while fishermen recognised the shark, they have not been seen for many years. Other members of the family found at the mouth of tropical rivers include bull sharks, speartooth sharks, Irrawaddy river sharks, northern river sharks and Ganges sharks. They all can survive in both saltwater and freshwater.

Genetic evidence has shown that both the Borneo river shark and Irrawaddy river shark (G. siamensis) should be regarded as synonyms of the Ganges shark (G. gangeticus). However, an apparently undescribed species of Glyphis shark is known from Mukah in Borneo, as well as Bangladesh. The status of a Borneo specimen from Sampit is unclear.

References

Borneo river shark Wikipedia


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