The Ganges shark (Glyphis gangeticus) is a rare species of fresh water shark that dwells in the Ganges River. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anenomes) Placozoa (trichoplax) Subregnum Bilateria (bilateral symmetry) Acoelomorpha (basal) Orthonectida (flatworms, echinoderms, etc. ... Typical Classes Subphylum Urochordata - Tunicates Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders see text The Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nostrils, scales, two-chambered hearts, and skeletons made of cartilage. ... Families Scyliorhinidae (cat sharks) Proscyllidae (finback cat sharks) Pseudotriakidae (false cat sharks) Leptochariidae (barbeled houndshark) Triakidae (hound sharks) Hemigaleidae (weasel sharks) Carcharhinidae (requiem sharks) The ground sharks, order Carcharhiniformes, are the largest order of sharks, with over 270 species, and includes a number of common types, such as the blue... Genera Carcharhinus Galeocerdo Glyphis Isogomphodon Lamiopsis Loxodon Nasolamia Negaprion Prionace Rhizoprionodon Scoliodon Sphyrna Triaenodon The requiem sharks are a family (Carcharhinidae) that includes some of the best-known and most common types of sharks, such as the tiger shark, blue shark, bull shark, and milk shark. ... In biology, binomial nomenclature is the formal method of naming species. ... Johannes Peter Müller (July 14, 1801, Koblenz – April 28, 1858, Berlin), was a German physiologist, comparative anatomist, and ichthyologist not only known for his discoveries but also for his ability to synthesize knowledge. ... Friedrich Gustav Jakob Henle Friedrich Gustav Jakob Henle (b. ... 1839 was a common year starting on Tuesday (see link for calendar). ... The river shark is one of 6 rare species of the genus Glyphis. ... The Ganges River (Ganga in Indian languages; Ganges is the Latin form) (Devanagari गंगा) is a major river in northern India and Bangladesh. ...

Appearance

In its external appearance, G. Gangeticus is a typical requiem shark. It is stocky, with a broadly rounded snout and small eyes. The first dorsal fin is over the last third of the pectoral fins, with a free rear tip that is well in front of the pelvic fins. The second dorsal fin is much smaller than the first, but is still relatively large. The anal fin is slightly smaller than the second dorsal fin. The pectoral fins are broad and falcate. A longitudinal upper precaudal pit is present, but the interdorsal ridge is absent. Genera Carcharhinus Galeocerdo Glyphis Isogomphodon Lamiopsis Loxodon Nasolamia Negaprion Prionace Rhizoprionodon Scoliodon Sphyrna Triaenodon The requiem sharks are a family (Carcharhinidae) that includes some of the best-known and most common types of sharks, such as the tiger shark, blue shark, bull shark, and milk shark. ... Dorsal Fin of the Orca A dorsal fin is a fin located on the backs of fishes, whales, dolphins and porpoises. ... Fish anatomy is primarily governed by the physical characteristics of water, which is much denser than air, holds a relatively small amount of dissolved oxygen, and absorbs light more than does air. ... Fish anatomy is primarily governed by the physical characteristics of water, which is much denser than air, holds a relatively small amount of dissolved oxygen, and absorbs light more than does air. ... Fish anatomy is primarily governed by the physical characteristics of water, which is much denser than air, holds a relatively small amount of dissolved oxygen, and absorbs light more than does air. ...

The shark tends to have a uniform gray to brownish coloration, with no discernible pattern or markings. The word gray is also spelled grey: see Grey for topics with this spelling. ... Brown is a color produced by mixing small intensities of red and green, orange and blue, or yellow and purple pigment. ...

Distribution

The Ganges shark, as its name suggests, is largely restricted to the rivers of the Indo-Western Pacific, particularly the Hooghly River of West Bengal, India. Individuals have also been sighted in waters in the vicinity of Karachi, Pakistan. The Hooghly River (alternatively spelled Hoogli or Hugli) is a distributary of the Ganges River in India. ... West Bengal (পশ্চিম বঙ্গ, Pościm Bôngo) is a state in the eastern region of India. ... Karachi (كراچى) is the largest city in Pakistan and the capital of the province of Sindh. ...

Biology

The shark, though poorly documented, is known to inhabit only freshwater, inshore marine and estuarine systems. Its feeding habits are unknown. Its maximum size is probably in the area of 204 cm. It is probably viviparous, measuring 55 cm to 60 cm at birth. For the village on the Isle of Wight, see Freshwater, Isle of Wight. ... Estuaries and coastal waters are among the most productive ecosystems on Earth, providing numerous ecological, economic, cultural, and aesthetic benefits and services. ... cm redirects here, alternate uses: cm (disambiguation) A centimetre (symbol cm; American spelling: centimeter) is an SI unit of length. ... A viviparous animal is an animal employing vivipary, a method of reproduction in which the embryo develops inside the body of the mother from which it gains nourishment, and not from an egg. ...

A related species is the Speartooth shark (Glyphis glyphis), although its distribution is different.

Endangerment

The Ganges shark is believed to be seriously endangered. An endangered species is a species whose population is so small that it is in danger of becoming extinct. ...

Danger to humans

The shark appears to pose a threat to humans, but this has not been proven. Most likely the shark is a specialized species that feeds primarily on small fish. There are much more dangerous sharks in the Ganges such as the bull shark; it represents a greater definite danger than this threatened and elusive species. Binomial name Homo sapiens Linnaeus, 1758 Subspecies Homo sapiens idaltu(extinct) Homo sapiens sapiens Homo (genus). ... Binomial name Carcharhinus leucas (Müller and Henle, 1839) Bull sharks are common in warm, shallow waters along coasts throughout the world. ...

See also

• List of shark articles in Wikipedia
• Fish anatomy