Pangasius

Pangasius pangasius ( copper engraving in the original description )

The genus Pangasius from the family of shark catfish comprises 21 extant species and a fossil- known Art The species occur in Southeast Asia from India to China and Indonesia before and colonize different rivers. Only P. pangasius and P. krempfi can also be found in brackish water. Most species are omnivorous with various degrees of specialization on different diets. In particular, in the Mekong region, the Pangasius species play a major role in commercial fishing. A number of species are also bred in aquaculture. The mainly as " pangasius " well-known in the German-speaking world food fish is, however, now attributed to the genus Pangasianodon.

Characteristics and systematics

The Pangasius species show the typical physique of siamese catfish with Wi- scale, long body, short dorsal fin with a spine- like ray pronounced hard and long anal fin. The size of the species ranges from 20 to 300 cm body length. The body is on the back side usually dark gray to almost black, often colored sky blue, blue-gray or blue- green with metallic sheen or, the belly is usually whitish, the fins are often dark. Most species exhibit no drawings. Important features for the differentiation of the species are the shape of the head, the length of the barbels, the shape of the dentition of the palate roof of the palate bone and vomer, the shape of the swim bladder, the number of rays on the first sheet of the gills reuse, the number of soft rays of the anal fin and any existing extensions or enlarged glands in the humerus.

The Pangasius species differ from the genus Helicophagus by much broader skull and jaws and dentition. Of the genera Pangasianodon and Pseudolais they can be distinguished by the exclusion of these genera characterizing features. For you to show neither the combination of (1 ) lack of barbels on the lower jaw and teeth in the adult stage, as well as a einlappige swim bladder ( Pangasianodon, with P. hypophtalmus and P. gigas ) nor ( 2) a four-lobed swim bladder with segmented fourth lobe ( Pseudolais with P. micronemus and P.pleurotaenia ).

In some works Pangasianodon and Pseudolais are managed as subgenera of the genus Pangasius, but molecular studies support the division.

Species

Extant species:

  • Pangasius bocourti Sauvage, 1880 - up to 120 cm, Mekong and Chao Phraya
  • Pangasius conchophilus Roberts & Vidthayanon, 1991 - up to 120 cm, Mekong, and Chao Phraya Bangpakong
  • Pangasius djambal Bleeker, 1846 - up to 90 cm, Mekong, Malaysia, Indonesia
  • Pangasius elongatus Pouyaud, Gustiano & Teugels, 2002 - 60 cm, Mekong, and Chao Phraya Bangpakong
  • Pangasius humeralis Roberts in 1989 to 40 cm, Kapuas River (Borneo )
  • Pangasius kinabatanganensis Roberts & Vidthayanon, 1991 - up to 24 cm, the catchment area of the Kinabatangan (Borneo )
  • Pangasius krempfi Fang & Chaux, 1949 - up to 120 cm, Mekong and coastal waters of Southeast Asia
  • Pangasius Kunyit Pouyaud, Teugels & Legendre, 1999 - up to 70 cm, Sumatra, Borneo, Mekong Delta
  • Pangasius larnaudii Bocourt, 1866 - up to 130 cm, Mekong and Chao Phraya
  • Pangasius lithostoma Roberts, 1989 - up to 25 cm, Kapuas River (Borneo )
  • Pangasius macronema Bleeker, 1851 - up to 20 cm, Mekong, Chao Phraya, Java and Borneo
  • Pangasius mahakamensis Pouyaud, Gustiano & Teugels, 2002 - up to 18 cm, Borneo
  • Pangasius mekongensis Gustiano, Teugels & Pouyaud, 2003 - Mekong
  • Pangasius myanmar Roberts & Vidthayanon, 1991 - up to 23 cm, Rangoon River (Myanmar )
  • Pangasius nasutus ( Bleeker, 1863) - Up to 90 cm
  • Pangasius nieuwenhuisii ( Popta, 1904) - 60 cm, Mahakam River (Borneo )
  • Pangasius pangasius (Hamilton, 1822) - up to 300 cm, India to Myanmar ( type species as a synonym P. buchanani )
  • Pangasius polyuranodon Bleeker, 1852 - up to 80 cm, Sumatra and Borneo
  • Pangasius rheophilus Pouyaud & Teugels, 2000 - up to 78 cm, Indonesia
  • Pangasius sabahensis Gustiano, Teugels & Pouyaud, 2003 - North Borneo
  • Pangasius sanitwongsei Smith, 1931 - up to 300 cm, Mekong and Chao Phraya

Fossil Type:

  • Pangasius indicus ( Marck, 1876)
Taxonomic rank#All ranks Ostariophysi Achille Valenciennes Omnivore Barbel (anatomy) Palatine bone Fish fin Mekong giant catfish Basa fish Pieter Bleeker Marie Firmin Bocourt Giant pangasius FishBase
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