Shark catfish

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Shark catfish
Temporal range: Miocene–Recent
Pangasius hypophthalmus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Suborder: Siluroidei
Superfamily: Arioidea
Family: Pangasiidae
Bleeker, 1858
Genera


Helicophagus
Pangasianodon
Pangasius
Pseudolais

The shark catfishes form the family Pangasiidae. They are found in fresh and brackish waters across southern Asia, from Pakistan to Borneo.[1] Among the 30-odd members of this family is the plant-eating, endangered Mekong giant catfish Pangasianodon gigas, one of the largest known freshwater fish.[1] Several species are the basis of productive aquaculture industries in Vietnam's Mekong Delta.

Taxonomy and fossil record

Although Pangasiidae forms a monophyletic group, several studies indicate this group may actually be a subtaxon nested within the family Schilbeidae. Thus, Pangasiidae's familial status may not deserve continued recognition.[2]

Two

Cetopangasius chaetobranchus from the Miocene, and Pangasius indicus, from the Eocene. However, the reported age of P. indicus from the Eocene is debatable, as the Sipang Fauna stratum where it is found has never been officially dated. Therefore, the earliest reliable pangasiid fossil age is of C. chaetobranchus from the Miocene.[2]

Description

The

References

External links