However, the holotype was apparently lost or misplaced in the British Museum of Natural History. The Grey nurse shark was also blamed during the sixties and seventies. The Ganges shark (Glyphis gangeticus) is a critically endangered species of requiem shark found in the Ganges River (Padma River) and the Brahmaputra River of Bangladesh and India. The first dorsal fin originates over the last third of the pectoral fins, with a free rear tip that is well in front of the pelvic fins. If Carcharias murrayi (Günter, 1887) can be considered a junior synonym of this species, one was found near Karachi, Pakistan. After Hurricane Katrina hit in 2005, a large number of bull sharks have been sighted in Lake Ponchartrain. Bull shark actively feeds on stingrays, sea urchins, turtles, sea cucumbers, krill, dolphins, lobsters, crabs, small bony fish and birds. [4], G. gangeticus is a little-known species that is yet to be adequately described. Public Records: 0 In Africa it is often called Zambezi River Shark or just Zambi. According to many experts, bull sharks are one of the most dangerous sharks in the world. [9] After a sighting in 2006, the species was not seen again for over a decade until one was found at a Mumbai fish market in 2016. It is uniformly grey to brownish in color, with no discernible markings. However, their life history cycle is probably similar to other river sharks, characterized by long gestation, slow growth, delayed maturity, and small litter size. [24], In 2001, the Indian government banned the landing of all species of chondrichthyan fish in its ports. What Do Bull Sharks Eat? It was collected in the 19th century and described as Carcharias siamensis by Austrian ichthyologist Franz Steindachner, in Annalen des Naturhistorischen Museums in Wien (volume 11, 1896). Species With Barcodes: 1. [15], It is probably viviparous, with a yolk-sac placenta (speculation through analogy to related species of carcharhinids). Captiva Fishing Guide Report: Wednesday, December 2: Bull Shark, Catch & Release, Captain Joe’s Charters – the weather is great, no red tide and a lot of good fish have moved back into the gulf, bay, and passes: redfish, snook, seatrout, and sharks are currently present. Expeditions in 2010 and 2011 failed to find any, and while fishermen recognised the shark, they have not been seen for many years. (EN). Compagno (1997) recommends an in-depth survey of fishing camps and landing sites, along with a sampling program in the Ganges system to determine the current status of this shark along with other gangetic elasmobranchs such as stingrays and sawfish. Specimens with Barcodes: 1 There is a widespread, albeit widely dispersed, artisanal fishery for both local consumption and international trade. The Ganges shark does not live in salt water, unlike the Bull shark, which also inhabits the Ganges River, and the two are often mistaken for one another. It has internal nictitating eyelids, like many requiem sharks. [9] The size at birth or maturity is unknown for any other Glyphis species. Ganges Shark and common bull shark are freshwater river systems requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers. [3], Glyphis species, like other sharks, exhibit a very slow rate of genetic change. Mugger Crocodile . The Borneo river shark is known only from the Kinabatangan River. Sharks of the world. The bull shark, also known as the Zambezi shark is native to Africa and Nicaragua. Part 2 - Carcharhiniformes", "Rare River Shark Species Not Seen In A Decade Found On Sale In A Fish Market", 10.2305/IUCN.UK.2009-2.RLTS.T161611A5464198.en, "Occupational health issues in marine freshwater research". Leading shark expert Leonard Compagno emphasised the need to check the dentition and the dorsal fin proportions in order to confirm the specimen as a Ganges shark, stating that it could also be one of the three other named species. The shark’s small eyes and slender teeth suggest that it is primarily a fish-eater and is adapted to turbid, murky water. In the Atlantic it is found from Massachusetts to South Brazil and from Morocco to Angola, in the Pacific it is found from South Africa to Kenya, India, Vietnam to Australia and from Baja California … It is known for its aggressive nature, and presence in warm, shallow brackish and freshwater systems including estuaries and rivers. In India, the bull shark may be confused with the Sundarbans or Ganges shark. They are found to a depth of 150 m, but does not usually swim deeper than 30 m.[3] The Ganges shark (Glyphis gangeticus) is a critically endangered species of requiem shark found in the Ganges River (Padma River) and the Brahmaputra River of Bangladesh and India. Broadfin shark. Also, a second dorsal fin that is about half the height of first dorsal is distinct to this species. Redfish & snook are regulated as catch & release at this time. Glyphis gangeticus bio-material GN2669,[21] reported in a 2012 paper on DNA sequencing in shark and ray species. The genus contains a total of three known species, down from a total of six due to the Borneo river shark and Irrawaddy Rivershark being revealed to be synonymous with the Ganges Shark. It is often confused with the more common bull shark (Carcharhinus leucas), which also inhabits the Ganges River and is sometimes incorrectly referred to as the Ganges shark. It is uniformly grey to brownish in color, with no discernible markings. Overfishing, habitat degradation from pollution, increasing river use and management, including construction of dams and barrages are the principle threats. There is a longitudinal upper precaudal pit, but no interdorsal ridge. The litter size and gestation period are unknown. The second dorsal fin is relatively large, but much smaller than the first (about half the height). The bull shark (Carcharhinus leucas), also known as the "Zambezi shark" (informally "zambi") in Africa, and "Lake Nicaragua shark" in Nicaragua, is a requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers. However, two websites list records for G. gangeticus: The Barcode of Life Data Systems (BOLDS) Stats website[20] lists one record: Originally the species was assigned a wide range in the Indo-West Pacific, but this was found to be mostly based on other species of requiem sharks, particularly members of the genus Carcharhinus. The bull shark is well known for its unpredictable, often aggressive behavior. [17] The presence of newborn individuals in the Hooghly River suggests that the young may be born in fresh water. Some researchers consider Ganges sharks to be amphidromous, covering more than 100 km in both directions. A specimen collected 84 km upstream of the mouth of the Hooghly River at Mahishadal in 2001 was identified as G. gangeticus but on photographs of the jaw only. Bull sharks are large and stout, with females being larger than males. It is also believed to be part of the Asian shark fin trade, though this is uncertain. The bull shark, ''Carcharhinus leucas'', also known as Zambezi shark or unofficially known as Zambi in Africa and Nicaragua shark in Nicaragua, is a shark common worldwide in warm, shallow waters along coasts and in rivers. Weights and Measures: Bull sharks are large and stout. The Ganges sharks is a critically endangered species of Shark found in the Ganges River and the Brahmaputra River of India. The second dorsal fin is relatively large, but much smaller than the first (about half the height). As only a few specimens exist, naturally there is little material available for genetic sampling. The species is currently classified as critically endangered. It is often confused with the more common bull shark (Carcharhinus leucas), which also inhabits the Ganges River and is sometimes incorrectly referred to as the Ganges shark. The Borneo river shark is known only from the Kinabatangan River. Out of over 500 species of sharks on earth, Bull sharks are among the few sharks that can live in both freshwater and saltwater. Redfish & snook are regulated as catch & release at this time. The bull shark is found all over the world in many different areas and has been known to travel long distances. The bull shark is well known for its unpredictable, often aggressive behavior. Jan 16, 2020 - ganges shark - The Ganges shark is a critically endangered species of requiem shark found in the Ganges River and the Brahmaputra River of Bangladesh and India. The Ganges shark is restricted to a very narrow band of habitat that is heavily impacted by human activity. female bull sharks migrate more towards brackish water when they are ready to give birth. Compagno (1997) recommends an in-depth survey of fishing camps and landing sites, along with a sampling program in the Ganges system to determine the current status of this shark along with other gangetic elasmobranchs such as stingrays and sawfish. A typical requiem shark in its external appearance, it is stocky in build, with two spineless dorsal fins and an anal fin. Animals potentially impacted include the endangered Irrawaddy dolphin and the critically endangered Ganges shark. The bite force of a tiger shark is 3,300 kg per cm square. No records exist between 1867 until 1996, and the 1996 records have not been confirmed as G. gangeticus. The young are about 70 cm (28 in) at birth and take 10 years to reach maturity. Ganges sharks can be identified by the first few lower front teeth, which have cutting edges along entire cusp, giving the cusps a clawlike shape, and low cusplets. In India bull sharks swim up the Ganges River and have attacked people. The bull shark, Carcharhinus leucas, also known as Zambezi shark or unofficially known as Zambi in Africa and Nicaragua shark in Nicaragua, is a shark common worldwide in warm, shallow waters along coasts and in rivers. The bull shark, ''Carcharhinus leucas'', also known as Zambezi shark or unofficially known as Zambi in Africa and Nicaragua shark in Nicaragua, is a shark common worldwide in warm, shallow waters along coasts and in rivers. This makes them even more vulnerable to becoming extinct, as they are unable to adapt to the rapid and extreme changes caused by humans to their environment.[6]. The shark's small eyes and slender teeth suggest that it is primarily a fish-eater and is adapted to turbid water. The status of a Borneo specimen from Sampit remains unclear. It has internal nictitating eyelids. Typically found in the Ganga, Hooghly, Mahanadi, and Brahmaputra rivers of India, the distribution of the species recently expanded when, as the result of various genetic studies, the Borneo river shark (G. fowlerae) and the Irrawaddy river shark (G. siamensis) were reclassified as part of the Ganges shark species. Ganges Shark - Glyphis gangeticus The Ganges shark (Glyphis gangeticus) is a critically endangered species of requiem shark found in the Ganges River (Padma River) and the Brahmaputra … The lower front teeth have long, hooked, protruding cusps with unserrated cutting edges along the entire cusp, but without spear-like tips and with low cusplets on feet of crowns. Critically endangered species of requiem shark found in the Ganges River (Padma River) and the Brahmaputra River of Bangladesh and India. Thought to be consumed locally for its meat, the Ganges shark is caught by gillnet, and its oil, along with that of the South Asian river dolphin, is highly sought after as a fish attractant. [6], Some researchers consider G. gangeticus to be amphidromous, covering more than 100 km in both directions.
However, unlike the bull shark, the Ganges shark has two spineless dorsal fins (with the second being half the length of the first), an anal fin, and a broad, rounded snout that is significantly shorter than the width of the mouth. River sharks are thought to be particularly vulnerable to habitat changes. Because of its rarity, the Ganges shark is not often heard of outside India, though it was mentioned briefly in an episode of Shark Week focusing on its relative, the bull shark. Bull shark also swims in freshwater of West Bengal’s Brahmaputra Rivers and Lake Nicaragua. Its snout is broadly rounded and much shorter than the width of its mouth. Many scientists agree that since bull sharks often dwell in shallow waters, they may be more dangerous to humans than any other species of sharks, and that they join tiger sharks and great white sharks as the three most likely sharks to … The NCBI Taxonomy database has one record of mitochondrial genetic material (1,044 base pairs of linear DNA): [13], The single Irrawaddy river shark specimen stems from an area of intensive artisanal fishing, mainly gillnetting, but also line and electrofishing. It is often confused with the more common bull shark (Carcharhinus leucas), which also inhabits the Ganges River and is sometimes incorrectly referred to as the Ganges shark. However, this is not thought to be for breeding, as the case in anadromous and catadromous species. The Ganges shark is widely feared as a ferocious man-eater. [3] In India, the bull shark may be confused with the Sundarbans or Ganges shark.In Africa it is also commonly called the Zambezi River shark or just Zambi. It was also mentioned as the most critically endangered shark species in 2015 on Discovery.com's Shark Week page. Glyphis species, like other sharks, exhibit a very slow rate of genetic change. Etymology Bull Shark The name comes from bull shark pushed the shark shape, broad, flat snout and aggressive unpredictable behavior. It is amongst the 20 most threatened shark species and is listed as a Critically Endangered species in the IUCN Redlist. As only a few specimens exist, naturally little material available is for genetic sampling. But most of the attacks attributed to it are probably the result of confusion with the bull shark (Carcharhinus leucas). [14], G. gangeticus is known to inhabit only freshwater, inshore marine, and estuarine systems in the lower reaches of the Ganges-Hooghly River system. It is stocky, with a broadly rounded snout and small eyes. [3] Unlike bull sharks, which need to migrate to salt water to reproduce, species in the genus Glyphis are true river sharks. Brahmaputra River, Bengali Jamuna, Tibetan Tsangpo, Chinese (Pinyin) Yarlung Zangbo Jiang or (Wade-Giles romanization) Ya-lu-tsang-pu Chiang, major river of Central and South Asia. The bull shark is a requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers. [11], The Ganges shark, as its name suggests, is largely restricted to the rivers of eastern and northeastern India, particularly the Hooghly River of West Bengal, and the Ganges, Brahmaputra, and Mahanadi in Bihar, Assam, and Odisha, respectively. Public Records: 0 Despite fishing and scientific surveys in the area, no more Irrawaddy river sharks have been recorded in the 100-plus years since the first. The genus is currently considered to contain three recent species; genetic evidence has shown that both the Borneo river shark (G. fowlerae) and Irrawaddy river shark (G. siamensis) should be regarded as synonyms of the Ganges shark, expanding the range of the species to Pakistan, Myanmar, Borneo, and Java. Chondrichthyes Wiki is a FANDOM Lifestyle Community. The Bull shark is common in coastal areas of warm oceans, in rivers and lakes, both in salt and fresh water. The Ganges shark has much narrower, higher, upper teeth and slender-cusped, less heavily built lower teeth than the bull shark does. Unlike bull sharks, which need to migrate to salt water to reproduce, species in the genus Glyphis are true river sharks. 67 relations. Unlike many other species of sharks, the Ganges shark is regarded as a true river shark and is only found within the middle and lower reaches of … Global Biodiversity Information Facility (GBIF): https://en.wikipedia.org/w/index.php?title=Ganges_shark&oldid=984676971, IUCN Red List critically endangered species, Taxa named by Friedrich Gustav Jakob Henle, Creative Commons Attribution-ShareAlike License, This page was last edited on 21 October 2020, at 12:59. It is also found in the fresh water Lake Nicaragua and the Ganges and Brahmaputra rivers of West Bengal and Assam in eastern India and adjoining Bangladesh. While many confuse this species with bull sharks (that often come to Ganga and then return back to salt water for reproducing), the Ganges shark lives and reproduces in Ganga. Rome: FAO. The mouth is long, broad, and extends back and up towards the eyes. With such limited visibility typical of many tropical rivers and estuaries, other senses − such as hearing, smell and electroreception − are likely used for predation. Scientific name: Carcharhinus leucas. [9], Most literature records and specimens labelled as this species are in fact bull sharks (Carcharhinus leucas) or other carcharhinid species. It is often confused with the more common bull shark (Carcharhinus leucas), which also inhabits the Ganges River and is sometimes incorrectly referred to as the Ganges shark. The presence of newborn individuals in the Hooghly River suggests that the young may be born in fresh water. Despite bull sharks’ ability to live in freshwater, they are not actual freshwater sharks. Tiger sharks can be found along the coast of tropical and sub-tropical waters. The name bull shark comes from the shark's stocky shapes, broad, flat snout and aggressive, unpredictable behavior. [10] However, in the Bay of Bengal, G. gangeticus was found to feed heavily on dasyatid stingrays, which spend much of their time on the bottom. Wider ranges assigned, including marine areas, are likely based on other requiem shark species, such as the Bull Shark. Froese, Rainer and Pauly, Daniel, eds. Specimens with Barcodes: 1 [4], The Borneo river shark is known only from the Kinabatangan River in Borneo. But since little is known about the behaviour of genuine freshwater river sharks, and since the Ganges shark is critically endangered, contact with humans is very rare. Only 13 specimens are known to science, all collected in 1996. It should be noted that most literature records and specimens labelled as this species are in fact bull sharks (Carcharhinus leucas) or other Carcharhinid species. [16] However, this is not thought to be for breeding, as the case in anadromous and catadromous species.
The Ganges shark (Glyphis gangeticus) resides in the rivers and estuaries of Bangladesh, which gives them their name. 67 relations. The mouth is long, broad, and extends back and up towards the eyes. The eyes of the Ganges shark are minute, suggesting that it may be adapted to turbid water with poor visibility, such as occurs in the Ganges River and the Bay of Bengal. Distribution. Also, a second dorsal fin that is about half the height of first dorsal is distinct to this species. The shark may be naturally rare in this area and highly restricted in its range. [8] Its size at birth is 56 to 61 cm (22 to 24 in), growing to an estimated 178 cm (70 in) at maturity, with a maximum size of about 204 cm (80 in). Bull Sharks. An extensive 10-year search produced only a few specimens, caught in 1996 in the Ganges River, further highlighting this species' rarity. It is found to a depth of 150 m, but does not usually swim deeper than 30 m. Some of their favorite rivers include the Brisbane River, Amazon River, Ganges River, Brahmaputra River, Potomac River and the Mississippi River. The bull shark can thrive in both saltwater and freshwater and can travel far up rivers. River Ganga supports many bird species that are uniquely found in India. It is known for its aggressive nature and ability to migrate up rivers. The anal fin is slightly smaller than the second dorsal fin and the pectoral fins are broad. Because its eyes are tilted towards its back rather than to the sides or bottom (as is the case in most carcharhinids), it is thought that the shark may swim along the bottom and scan the water above it for potential prey back-lit by the sun. International Union for Conservation of Nature and Natural Resources Red List, 10.2305/IUCN.UK.2007.RLTS.T9281A12978210.en, "DNA capture reveals transoceanic gene flow in endangered river sharks", "The Mysterious, Endangered River Sharks (, Journal of the Marine Biological Association of the United Kingdom, "FAO Species Catalogue. This likely includes the rivers rivers Hooghly, Ganges, Brahmaputra and Mahanadi [4, 5]. The shark is endemic to India. [3], Its eyes are minute, suggesting that it may be adapted to turbid water with poor visibility, such as occurs in the Ganges River and the Bay of Bengal. The average lifespan of a tiger shark is 12 years: Attack-Bull shark attack- Take your favorite fandoms with you and never miss a beat. It also eats human corpses that the local population float on the river. https://chondrichthyes.fandom.com/wiki/Ganges_shark?oldid=795. Angel sharks are known for having flattened bodies and a broad pectoral fins. The bull shark is well known for its unpredictable, often aggressive behavior. [6] The specimen is a 60-cm-long immature male. It is often confused with the more common bull shark, which also inhabits the Ganges River Bull sharks, Zambezi River Shark or Colloquially Zambi are common in warm, shallow waters along coasts throughout the world. They are viviparous. The Ganges shark (Glyphis gangeticus) is a critically endangered species of requiem shark found in the Ganges River of India. [6][7], A possibly undescribed species of Glyphis is known from Mukah in Borneo, as well as Bangladesh. The Brahmaputra (is one of the major rivers of Asia, a trans-boundary river which flows through China, India and Bangladesh. Ganges Shark - A freshwater shark found in the Ganges River (duh) and the Brahmaputra River. PERSON#1:BULL SHARKS ARE BORING AND NOT AGGRESSIVE. 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In 2015 on Discovery.com 's shark Week page 24 ], Some researchers consider Ganges are. Found in the rivers rivers Hooghly, Ganges, Brahmaputra, and presence in the Ganges (! Two spineless dorsal fins and an anal fin was amended to cover only 10 of... Are the principle threats actual freshwater sharks predilection for warm shallow water, and extends back up.
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