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Fluvitrygon
''Fluvitrygon'' is a genus of stingrays in the family Dasyatidae from freshwater in southeast Asia. Its species were formerly contained within the genus ''Himantura''. Species *'' Fluvitrygon kittipongi'' ( Vidthayanon & Roberts, 2006) (Roughback whipray) *'' Fluvitrygon oxyrhyncha'' ( Sauvage, 1878) (Marbled whipray) *'' Fluvitrygon signifer'' ( Compagno & Roberts Roberts may refer to: People * Roberts (given name), a Latvian masculine given name * Roberts (surname), a popular surname, especially among the Welsh Places * Roberts (crater), a lunar impact crater on the far side of the Moon ;United Stat ..., 1982) (White-edge freshwater whipray) References {{Taxonbar, from=Q26903849 Dasyatidae Taxa named by Peter R. Last Taxa named by Bernadette Mabel Manjaji-Matsumoto Freshwater fish genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marbled Whipray
The marbled whipray (''Fluvitrygon oxyrhynchus'') is a little-known species of stingray in the family Dasyatidae, native to several freshwater rivers in Southeast Asia. This species has an oval pectoral fin disc with an elongated, pointed snout and a very long, whip-like tail without fin folds. It is characterized by numerous heart-shaped dermal denticles and tubercles on its upper surface, as well as a reticulated pattern of brown blotches on a light background. The maximum recorded disc width is . The marbled whipray has been assessed as Endangered by the International Union for Conservation of Nature (IUCN); it is heavily threatened by fishing and habitat loss, degradation, and fragmentation. Taxonomy French zoologist Henri-Emilé Sauvage originally described the marbled whipray as ''Trygon oxyrhynchus'' based on a female specimen caught near Saigon, Vietnam, in an 1878 volume of the scientific journal ''Bulletin de la Société philomathique de Paris''. In 1913, Samuel Garma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluvitrygon
''Fluvitrygon'' is a genus of stingrays in the family Dasyatidae from freshwater in southeast Asia. Its species were formerly contained within the genus ''Himantura''. Species *'' Fluvitrygon kittipongi'' ( Vidthayanon & Roberts, 2006) (Roughback whipray) *'' Fluvitrygon oxyrhyncha'' ( Sauvage, 1878) (Marbled whipray) *'' Fluvitrygon signifer'' ( Compagno & Roberts Roberts may refer to: People * Roberts (given name), a Latvian masculine given name * Roberts (surname), a popular surname, especially among the Welsh Places * Roberts (crater), a lunar impact crater on the far side of the Moon ;United Stat ..., 1982) (White-edge freshwater whipray) References {{Taxonbar, from=Q26903849 Dasyatidae Taxa named by Peter R. Last Taxa named by Bernadette Mabel Manjaji-Matsumoto Freshwater fish genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White-edge Freshwater Whipray
The white-edge freshwater whipray (''Fluvitrygon signifer'') is an extremely rare species of stingray in the family Dasyatidae, native to four river systems in Southeast Asia. Measuring up to across, this ray has an oval pectoral fin disc and a very long, whip-like tail without fin folds. It can be identified by the presence of a sharply delineated white band running around the margin of its otherwise brown disc, as well as by its white tail and a band of dermal denticles along the middle of its back. This species feeds on benthic invertebrates and is aplacental viviparous. Its two long tail spines are potentially dangerous to humans. The International Union for Conservation of Nature (IUCN) has assessed the white-edge freshwater whipray as Endangered, as it is under heavy pressure from fishing and habitat loss, degradation, and fragmentation. Taxonomy and phylogeny The white-edge freshwater whipray was described by Leonard Compagno and Tyson Roberts in a 1982 issue of ''Envir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Himantura Signifer
The white-edge freshwater whipray (''Fluvitrygon signifer'') is an extremely rare species of stingray in the family Dasyatidae, native to four river systems in Southeast Asia. Measuring up to across, this ray has an oval pectoral fin disc and a very long, whip-like tail without fin folds. It can be identified by the presence of a sharply delineated white band running around the margin of its otherwise brown disc, as well as by its white tail and a band of dermal denticles along the middle of its back. This species feeds on benthic invertebrates and is aplacental viviparous. Its two long tail spines are potentially dangerous to humans. The International Union for Conservation of Nature (IUCN) has assessed the white-edge freshwater whipray as Endangered, as it is under heavy pressure from fishing and habitat loss, degradation, and fragmentation. Taxonomy and phylogeny The white-edge freshwater whipray was described by Leonard Compagno and Tyson Roberts in a 1982 issue of ''Envir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roughback Whipray
The roughback whipray (''Himantura kittipongi'') is a rare species of freshwater Myliobatiformes, stingray in the family (biology), family Dasyatidae, found over sandy bottoms in the Mae Klong and Chao Phraya Rivers of Thailand. Growing no more than across, this small ray has an oval pectoral fin disc and a whip-like tail without fin folds. It closely resembles the white-edge freshwater whipray (''H. signifer'') in appearance, but can be distinguished by its coloration: light gray to dark orange-brown above and white below with a dark band along the lateral margins. Another identifying feature is a "pearl organ" (enlarged dermal denticle) at the center of the back, found in individuals of all ages. All of the original specimens of the roughback whipray were found with extensive wounds to the fins and tail. The International Union for Conservation of Nature (IUCN) has assessed this species as Endangered, citing the extensive habitat degradation and heavy fishing pressure within its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Himantura
''Himantura'' is a genus of stingray in the family Dasyatidae that is native to the Indo-Pacific. In a 2016 taxonomic revision, many of the species formerly assigned to ''Himantura'' were reassigned to other genera ('' Brevitrygon'', '' Fluvitrygon'', '' Maculabatis'', '' Pateobatis'', ''Styracura'' and ''Urogymnus''). Species Four species are recognized as valid by some authors, while other authors recognize five valid species. *''Himantura australis'' Last, White & Naylor, 2016 (Australian whipray) *'' Himantura leoparda'' Manjaji-Matsumoto & Last, 2008 (Leopard whipray) *'' Himantura uarnak'' (J. F. Gmelin, 1789) (Reticulate whipray) *'' Himantura undulata'' (Bleeker, 1852) (Honeycomb whipray) The fifth species, ''Himantura tutul'' (fine-spotted leopard whipray) has had its validity disputed and has been considered a junior synonym of ''H. uarnak'' by the Catalog of Fishes Catalog of Fishes is a comprehensive on-line database and reference work on the scientific names of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stingray
Stingrays are a group of sea rays, which are cartilaginous fish related to sharks. They are classified in the suborder Myliobatoidei of the order Myliobatiformes and consist of eight families: Hexatrygonidae (sixgill stingray), Plesiobatidae (deepwater stingray), Urolophidae (stingarees), Urotrygonidae (round rays), Dasyatidae (whiptail stingrays), Potamotrygonidae (river stingrays), Gymnuridae (butterfly rays) and Myliobatidae (eagle rays). There are about 220 known stingray species organized into 29 genera. Stingrays are common in coastal tropical and subtropical marine waters throughout the world. Some species, such as the thorntail stingray (''Dasyatis thetidis''), are found in warmer temperate oceans and others, such as the deepwater stingray (''Plesiobatis daviesi''), are found in the deep ocean. The river stingrays and a number of whiptail stingrays (such as the Niger stingray (''Fontitrygon garouaensis'')) are restricted to fresh water. Most myliobatoids are demersa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...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] |
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 comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chavalit Vidthayanon
Chavalit Vidthayanon ( th, ชวลิต วิทยานนท์; born 1959 in Bangkok) is a Thai ichthyologist and senior researcher of biodiversity of WWF Thailand. He graduated from Bangkok Christian College and graduated in marine biology from Kasetsart University and Chulalongkorn University. Vidthayanon received a Ph.D. in fishery biology from the Tokyo Fisheries University (now's Tokyo University of Marine Science and Technology), Japan. He has been working on aquatic biodiversity studies in Southeast Asia since 1983. He has worked with leading ichthyologists both Thais and foreigners such as Kittipong Jaruthanin, T. R. Roberts, H. H. Ng and Maurice Kottelat etc. He has studied and taxonomy many of the newly discovered freshwater species in the world (many were found in Mekong Basin) such as ''Amblypharyngodon chulabhornae'', '' Himantura kittipongi'', '' Pangasius conchophilus'', '' P. myanmar'', ''Pao palustris'', ''Pseudeutropius indigens'', '' Schistura prid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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