Glyptosternon reticulatum 2021 stamp of Kyrgyzstan

''Glyptosternon'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

sisorid catfish Sisoridae is a family of catfishes. These Asian catfishes live in fast-moving waters and often have adaptations that allow them to adhere to objects in their habitats. The family includes about 235 species. Taxonomy The family Sisoridae is recog ...

es native to Asia.

Species

There are currently four recognized species in this genus: * ''Glyptosternon akhtari'' Eric Godwin Silas, Silas, 1952 * ''Glyptosternon maculatum'' (Charles Tate Regan, Regan, 1905) * ''Glyptosternon reticulatum'' John McClelland (doctor), McClelland, 1842 (Turkestan catfish) * ''Glyptosternon oschanini'' Solomon Herzenstein, Herzenstein, 1889 (Oshanin catfish)

Distribution

species are distributed in Indus River, Indus drainage in Afghanistan, Pakistan, India (in the state of Jammu and Kashmir (union territory), Jammu and Kashmir), Uzbekistan, Tajikistan, Kyrgyzstan and western China, east to the Ayeyarwady River, Irrawaddy drainage in Burma. is from the Bamian River of the Oxus Watershed of the Indus drainage in Afghanistan. is found in the Brahmaputra River, Brahmaputra drainage of India and China. is from the Indus drainage including Afghanistan, Pakistan, Kashmir, and western China. is known from the Upper Syr Darya and probably Amu Darya in Kyrgyzstan, Uzbekistan and Tajikistan

Description

''Exostoma'' is distinguished by having 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 pectoral fin, branched pectoral rays. 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 (subcutaneous). The lips are thick, fleshy, and Papilla (fish mouth structure), 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 Skin fold, plaited to form an adhesive apparatus. and grow to between . ''Glyptosternon malaisei'' was known only from the Type (biology), type, which is from the Irrawaddy drainage in Burma. A recently published study reidentifies ''G. malaisei'' as a species of ''Glaridoglanis'', on the basis of the spatulate, homodont dentition on both jaws and the premaxillary tooth patch not extending posterolaterally; and considers it to be a junior subjective synonym of ''Glaridoglanis andersonii''.

Ecology

is found in mountain rapids. is found in rivers and streams under stones and rocks. It feeds mainly on invertebrates, especially insect larvae.

References

{{Taxonbar, from=Q5032516 Sisoridae Fish of Asia Fish of Afghanistan Freshwater fish of China Freshwater fish of India Fish of Myanmar Fish of Pakistan Fish of Central Asia Taxa named by John McClelland (doctor) Freshwater fish genera Catfish genera