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Hemitrygon
''Hemitrygon'' is a genus of stingrays in the family Dasyatidae from marine, brackish and freshwater habitats in the central Indo-Pacific and northwest Pacific regions. The genus was formerly regarded as a junior synonym of the genus ''Dasyatis''. Species The taxonomy of ''Hemitrygon'' requires revision, as some existing species may be synonyms and there may be undescribed species. '' H. yemenensis'' was described in 2020 from materials collected nearly 120 years ago and its status in the wild is unknown. *'' Hemitrygon akajei'' ( Müller & Henle, 1841) (Red stingray) *'' Hemitrygon bennetti'' ( Müller & Henle, 1841) Bennett's stingray) *'' Hemitrygon fluviorum'' ( Ogilby, 1908) (Estuary stingray) *'' Hemitrygon izuensis'' ( Nishida & Nakaya, 1988) (Izu stingray) *'' Hemitrygon laevigata'' ( Chu, 1960) (Yantai stingray) *'' Hemitrygon laosensis'' ( Roberts & Karnasuta, 1987) (Mekong freshwater stingray) *'' Hemitrygon longicauda'' (Last & W. T. White, 2013) (Merauke stingray ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blackish Stingray
The blackish stingray, ''Hemitrygon navarrae'', is a little-known species of stingray in the family (biology), family Dasyatidae, found in the northwestern Pacific Ocean off the coasts of mainland China and Taiwan. This species reaches across and has a chocolate brown, diamond-shaped pectoral fin disc nearly as long as wide. Its whip-like tail bears three large tubercles in front of the stinging spine, as well as both Dorsum (anatomy), dorsal and ventral fin folds with the ventral fold half as long as the disc. Caught as bycatch in bottom trawls, the blackish stingray is frequently marketed as food in China. T Taxonomy Austrian zoologist Franz Steindachner originally described the blackish stingray as ''Trygon navarrae'', in an 1892 volume of the scientific journal ''Denkschriften der Mathematisch-Naturwissenschaftlichen Classe der Kaiserlichen Akademie der Wissenschaften in Wien''. The type specimen is a male across, collected from Shanghai, China.Nishida, K. and K. Nakaya (199 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estuary Stingray
The estuary stingray (''Hemitrygon fluviorum''), also called the estuary stingaree or brown stingray, is a species of stingray in the family Dasyatidae. Endemic to eastern Australia, it typically inhabits shallow, mangrove-lined tidal rivers, estuaries, and bays in southern Queensland and New South Wales. This yellow-brown to olive ray grows to at least across. It has a diamond-shaped pectoral fin disc and a mostly smooth, whip-like tail bearing both dorsal and ventral fin folds. It can additionally be identified by its long, narrow nostrils and the row of thorns along the midline of its back. While the estuary stingray has gained infamy for consuming farmed shellfish such as oysters, it mainly feeds on crustaceans and polychaete worms. It is aplacental viviparous, with the unborn young sustained to term by maternal histotroph ("uterine milk"). Once common, this species has apparently declined across much of its range, likely from a combination of habitat degradation, mortali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemitrygon Longicauda
''Hemitrygon longicauda'', the Merauke stingray, is a species of stingray in the family Dasyatidae. ''Hemitrygon longicauda'' is found in the Western Pacific, where it is endemic to southern Guinea Guinea ( ),, fuf, 𞤘𞤭𞤲𞤫, italic=no, Gine, wo, Gine, nqo, ߖߌ߬ߣߍ߫, bm, Gine officially the Republic of Guinea (french: République de Guinée), is a coastal country in West Africa. It borders the Atlantic Ocean to the we .... This species reaches a length of . References Hemitrygon Taxa named by Peter R. Last Taxa named by William Toby White Fish described in 2013 {{Chondrichthyes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemitrygon Yemenensis
''Hemitrygon yemenensis'' is a species of stingray in the family Dasyatidae. ''Hemitrygon yemenensis'' is found along the Arabian Sea coast of eastern Yemen Yemen (; ar, ٱلْيَمَن, al-Yaman), officially the Republic of Yemen,, ) is a country in Western Asia. It is situated on the southern end of the Arabian Peninsula, and borders Saudi Arabia to the Saudi Arabia–Yemen border, north and .... This species reaches a length of . References Hemitrygon Taxa named by Alec B. M. Moore Taxa named by Peter R. Last Taxa named by Gavin J.P. Naylor Fish described in 2020 {{Chondrichthyes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bennett's Stingray
The Bennett's stingray or frilltailed stingray (''Hemitrygon bennetti'', often misspelled ''benetti'' or ''bennettii'') is a little-known species of Myliobatiformes, stingray in the family (biology), family Dasyatidae, with a wide but ill-defined distribution in the Indian Ocean, Indian and Pacific Oceans. This species is characterized by a rhomboid, yellow-brown pectoral fin disc with a fairly long snout, and an extremely long tail with a correspondingly long ventral fin fold. It measures up to across. It feeds on fish, and is aplacental viviparous. It is likely caught by demersal fisheries. Etymology The fish is possibly named in honor of zoologist Edward Turner Bennett (1797-1836), Taxonomy German biologists Johannes Peter Müller and Friedrich Gustav Jakob Henle described the Bennett's stingray as ''Trygon bennettii'' in their 1839–1841 ''Systematische Beschreibung der Plagiostomen''. They referenced three specimens as the species syntypes: only the one from China rema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Izu Stingray
The Izu stingray (''Hemitrygon izuensis'') is a little-known species of stingray in the family Dasyatidae, endemic to the Izu Peninsula of Japan. Found in shallow coastal waters, it is a fairly small species with a smooth, golden-brown, diamond-shaped pectoral fin disc and a whip-like tail with a low keel above and fin fold beneath. The fin fold is white, distinguishing the Izu stingray from all other Pacific members of its family. Taxonomy The Izu stingray was described by Kiyonori Nishida and Kazuhiro Nakaya in a 1988 issue of the ''Japanese Journal of Ichthyology''. Its specific epithet ''izuensis'' refers to where the type specimen, a wide adult male, was caught. Distribution and habitat The Izu stingray occurs only off the Izu Peninsula on the eastern coast of the Japanese main island Honshū. This bottom-dwelling species inhabits waters close to shore, at depths of . Description The largest Izu stingray on record measures across. The pectoral fin disc is diamond-shape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mekong Freshwater Stingray
The Mekong freshwater stingray, ''Hemitrygon laosensis'', is a species of stingray in the family Dasyatidae, restricted to the Mekong and Chao Phraya Rivers in Laos and Thailand; the occurrence in Chao Phraya is considered an introduction. Measuring up to across, this ray has an oval pectoral fin disc, a tail with both upper and lower fin folds, and a midline row of spine-like dermal denticles. A characteristic feature of this species is its bright orange underside. The Mekong freshwater stingray preys on invertebrates and is aplacental viviparous. It has been assessed as Endangered by the International Union for Conservation of Nature (IUCN), as it is threatened by overfishing and habitat degradation. Taxonomy and phylogeny The Mekong freshwater stingray was first recognized as a new species by Yasuhiko Taki, who included it as "''Dasyatis'' sp." in his 1968 list of Mekong River fishes from Laos. Taki's specimens were subsequently lost, and this ray was not formally described u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yantai Stingray
The Yantai stingray, ''Hemitrygon laevigata'' (often misspelled ''laevigatus''), is a little-known species of stingray in the family Dasyatidae, inhabiting shallow waters in the northwestern Pacific Ocean off the coasts of China and Japan. Measuring no more than across, this species is characterized by its diamond-shaped pectoral fin disc wider than long, completely smooth skin, dorsal coloration of dark irregular spots on a yellowish gray-brown background, and ventral coloration of more spots on a white background with yellowish margins. One of the three most common stingrays sold for food in China, the slow-reproducing Yantai stingray faces possible overfishing and habitat degradation, and its numbers appear to be declining. The International Union for Conservation of Nature (IUCN) has assessed it as vulnerable. Taxonomy The Yantai stingray was described by Yuanting Chu in his 1960 ''Cartilaginous Fishes of China'', based on specimens obtained from the Shanghai Fish Market, Do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Stingray
The red stingray (''Hemitrygon akajei'') is a species of stingray in the family Dasyatidae, found in the northwestern Pacific Ocean off Japan, Korea, and China, and possibly elsewhere. It primarily inhabits shallow, sandy habitats close to shore, and has been known to enter brackish water. The red stingray has a diamond-shaped pectoral fin disc and gains its common name from its bright orange-red underside; there may also be patches of orange at various spots on its upper surface. Most individuals are no more than long. Feeding mainly on crustaceans and bony fishes, the red stingray plays a key ecological role as an apex predator in its environment. Reproduction is aplacental viviparous, with females giving birth to 1 or up to 10 pups at a time. The red stingray is valued as food in Japan; large numbers are caught as bycatch and brought to market, which has seemingly led to a population decline in this unprolific species. As a result, the International Union for Conservation of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dasyatis
''Dasyatis'' (Greek δασύς ''dasýs'' meaning rough or dense and βατίς ''batís'' meaning skate) is a genus of stingray in the family Dasyatidae that is native to the Atlantic, including the Mediterranean. In a 2016 taxonomic revision, many of the species formerly assigned to ''Dasyatis'' were reassigned to other genera (''Bathytoshia'', ''Fontitrygon'', ''Hemitrygon'', '' Hypanus'', ''Megatrygon'' and ''Telatrygon''). Species *'' Dasyatis dipterura'' ( D. S. Jordan & C. H. Gilbert, 1880) (diamond stingray) *''Dasyatis chrysonota'' A. Smith, 1828 (blue stingray) *'' Dasyatis hypostigma'' H. R. S. Santos & M. R. de Carvalho, 2004 (groovebelly stingray) *''Dasyatis marmorata'' Steindachner, 1892 (marbled stingray) *''Dasyatis pastinaca'' Linnaeus, 1758 (common stingray) *'' Dasyatis tortonesei'' Capapé, 1975 (Tortonese's stingray) Fossil species * † '' Dasyatis africana'' Arambourg, 1947 See also * List of prehistoric cartilaginous fish This list of prehi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Toby White
William Toby White is an Australian ichthyologist. He studies speciation and biodiversity of shark, ray, and skate species (subclass Elasmobranchii) through morphological and molecular systematics. Education White received bachelor's (1997) and doctoral (2003) degrees in Biological Science from Murdoch University in Perth, Australia. His doctoral thesis, "Aspects of the biology of elasmobranchs in a subtropical embayment in Western Australia and of chondrichthyan fisheries in Indonesia", examined 1) spatial partitioning of food resources available to shark, ray, and skate species in Shark Bay (off the western coast of Australia), and 2) the relative frequencies of shark, ray, and skate species caught in fisheries off the coast of southeastern Indonesia. From 2004 to 2006 he did post-doctoral training, also at Murdoch University. Professional career Since 2006, White has served as ichthyologist at the Australian National Fish Collection which is part of the CSIRO Marine and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter R
Peter may refer to: People * List of people named Peter, a list of people and fictional characters with the given name * Peter (given name) ** Saint Peter (died 60s), apostle of Jesus, leader of the early Christian Church * Peter (surname), a surname (including a list of people with the name) Culture * Peter (actor) (born 1952), stage name Shinnosuke Ikehata, Japanese dancer and actor * ''Peter'' (album), a 1993 EP by Canadian band Eric's Trip * ''Peter'' (1934 film), a 1934 film directed by Henry Koster * ''Peter'' (2021 film), Marathi language film * "Peter" (''Fringe'' episode), an episode of the television series ''Fringe'' * ''Peter'' (novel), a 1908 book by Francis Hopkinson Smith * "Peter" (short story), an 1892 short story by Willa Cather Animals * Peter, the Lord's cat, cat at Lord's Cricket Ground in London * Peter (chief mouser), Chief Mouser between 1929 and 1946 * Peter II (cat), Chief Mouser between 1946 and 1947 * Peter III (cat), Chief Mouser between 1947 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
