Glyptosternon

From Wikipedia, the free encyclopedia

Glyptosternon
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Sisoridae
Subfamily: Glyptosterninae
Tribe: Glyptosternina
Genus: Glyptosternon
M’Clelland, 1842
Type species
Glyptosternon reticulatus
M’Clelland, 1842
Binomial name

Glyptosternon akhtari
Silas, 1952
Glyptosternon maculatum
(Regan, 1905)
Glyptosternon malaisei
Rendahl & Vestergren, 1941
Glyptosternon reticulatum
M’Clelland, 1842
Synonyms
  • Glyptosternum Agassiz, 1846
  • Parexostoma Regan, 1905

Glyptosternon is a genus of catfishes (order Siluriformes) of the family Sisoridae. It includes four species, G. akharti, G. maculatum, G. malaisei, and G. reticulatum.[1][2]

Contents

[edit] Distribution

Glyptosternon species are distributed in Indus drainage in Afghanistan, Pakistan, India, Uzbekistan, Tajikistan, and China, east to the Irrawaddy drainage in Burma.[1] G. akharti is from the Bamian River of the Oxus Watershed of the Indus drainage in Afghanistan. G. maculatum is found in the Brahmaputra drainage of India and China. G. malaisei, known only from the type, is from the Irrawaddy drainage in Burma. G. reticulatum is from the Indus drainage including Afghanistan, Pakistan, India, Uzbekistan, Tajikistan and China.[1]

[edit] Description

Exostoma is distinguished by having a the combination of an interrupted groove behind the lip (post-labial groove), the gill openings extending onto the underside (venter), homodont dentition with pointed teeth in both jaws, a crescent-shaped tooth patch in the upper jaw, and 10–12 branched pectoral rays.[1] The head is depressed with a broadly rounded snout. The body is elongate and flattened ventrally to the pelvic fins. The eyes are minute, dorsally located, and under the skin (subcutaenous). The lips are thick, fleshy, and papillated. The teeth in both jaws are pointed and the tooth patches in the upper jaw are joined, forming a band produced posteriorly at sides (crescent-shaped). The paired fins are plaited to form an adhesive apparatus.[1]

G. maculatum and G. reticulatum grow to between 24.0–25.5 centimetres (9.45–10.0 in).[3][4] G. malaisei has a maximum recorded length of 7.0 cm TL.[5]

[edit] Ecology

G. maculatum is found in mountain rapids.[3] G. reticulatum is found in rivers and streams under stones and rocks. It feeds mainly on invertebrates, especially insect larvae.[4]

[edit] References

  1. ^ a b c d e Thomson, Alfred W.; Page, Lawrence M. (2006). "Genera of the Asian Catfish Families Sisoridae and Erethistidae (Teleostei: Siluriformes)" (PDF). Zootaxa 1345: 1–96. 
  2. ^ Ferraris, Carl J., Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa 1418: 1–628. 
  3. ^ a b "Glyptosternon maculatum". FishBase. Ed. Ranier Froese and Daniel Pauly. July 2007 version. N.p.: FishBase, 2007.
  4. ^ a b "Glyptosternon reticulatum". FishBase. Ed. Ranier Froese and Daniel Pauly. July 2007 version. N.p.: FishBase, 2007.
  5. ^ "Glyptosternon malaisei". FishBase. Ed. Ranier Froese and Daniel Pauly. July 2007 version. N.p.: FishBase, 2007.
 This catfish-related article is a stub. You can help Wikipedia by expanding it.