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Cynodontidae
Cynodontidae, also known as dogtooth characins or vampire tetras, are a family of predatory, characiform freshwater fishes from South America. This group is not very diverse, and includes only five genera and 14 species. Most of what is known about this family is from the members of the subfamily Cynodontinae, which includes the largest species of this family, up to . The members of subfamily Roestinae only reach up to . and are less known. Physical characteristics Cynodontidae are elongated in shape with a silvery or grey colour and an upturned mouth. Some species have a hunchbacked appearance. The family names (both scientific and common) derive from the long and well-developed canines which are used to spear their prey, mainly other fish. Their pectoral fins are also expanded. The maximum length reached is . Distribution and habitat These fish live in midlevel to surface waters of rivers, lakes, and flooded forests. Most species of this family originate from the Orinoco and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhaphiodon Vulpinus
The biara (''Rhaphiodon vulpinus'') is a South American piscivorous fish in the dogtooth characin family. It belongs to the monotypic genus ''Rhaphiodon'', although some minor differences in morphometrics and colour are known from across its large range.OPEFE: Rhaphiodon.' Retrieved 13 January 2017.SeriouslyFish: Rhaphiodon vulpinus.' Retrieved 13 January 2017. It is found in the Amazon, Orinoco, and Río de la Plata Basins, as well as rivers of the Guianas. It occurs in a wide range of freshwater habitats such as main river channels, flooded forests, lakes and reservoirs. Some populations are migratory. It reaches up to in weight. Although it reportedly can reach up to in standard length, the largest confirmed were . Like other dogtooth characins, the biara has very long pointed canine teeth In mammalian oral anatomy, the canine teeth, also called cuspids, dog teeth, or (in the context of the upper jaw) fangs, eye teeth, vampire teeth, or vampire fangs, are the re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cynodontinae
Cynodontinae is a subfamily of tropical and subtropical South American fishes of the family Cynodontidae. They are characterized by an oblique mouth and very long distinct canines, which are used to capture and stab their prey, other fish that can be up to half the length of the cynodontine itself. They are not prized as food fish, but are important in subsistence and commercial fisheries. ''Hydrolycus'' are game fish, having been recently added to the International Game Fish Association in the fly and rod class. Cynodontid fish are also sometimes housed in aquaria. Taxonomy This monophyletic subfamily contains only a few species: three species of ''Cynodon'', four speciecs of ''Hydrolycus'', and one species in the monotypic genus ''Rhaphiodon'', ''Rhaphiodon vulpinus''. These fish have been previously classified within Characidae. ''Rhaphiodon'' and ''Cynodon'' are sister groups to each other; these two genera together have a sister group relationship to the genus ''Hydrolycus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhaphiodon (fish)
The biara (''Rhaphiodon vulpinus'') is a South American piscivorous fish in the dogtooth characin family. It belongs to the monotypic genus ''Rhaphiodon'', although some minor differences in morphometrics and colour are known from across its large range.OPEFE: Rhaphiodon.' Retrieved 13 January 2017.SeriouslyFish: Rhaphiodon vulpinus.' Retrieved 13 January 2017. It is found in the Amazon, Orinoco, and Río de la Plata Basins, as well as rivers of the Guianas. It occurs in a wide range of freshwater habitats such as main river channels, flooded forests, lakes and reservoirs. Some populations are migratory. It reaches up to in weight. Although it reportedly can reach up to in standard length, the largest confirmed were . Like other dogtooth characins, the biara has very long pointed canine teeth, but it is easily separated from its relatives by its very elongated and streamlined body shape. Like its relatives, the biara feeds almost entirely on other fish, which are speared by t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roestes
''Roestes'' is a genus of dogtooth characins from tropical South America, where found in the Amazon Basin and various rivers in the Guianas. There are three described species in this genus. Species * '' Roestes itupiranga'' Menezes Menezes, sometimes Meneses, was originally a Portuguese toponymic surname which originated in Montes Torozos, a region in Tierra de Campos, northeast of Valladolid and southeast of Palencia. The ancestor of the Meneses lineage was Tello Pérez de Me ... & C. A. S. de Lucena, 1998 * '' Roestes molossus'' ( Kner, 1858) * '' Roestes ogilviei'' ( Fowler, 1914) References * Cynodontidae Fish of South America Taxa named by Albert Günther {{Characiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrolycus
''Hydrolycus'' is a genus of large dogtooth characins from tropical South America, where found in the Amazon basin, Amazon and Orinoco basins, as well as rivers of the Guianas. The genus includes the largest dogtooth characins, reaching up to in length. They have long, pointed teeth (shorter and less extreme in ''H. wallacei'') used for spearing their prey, generally smaller fish. In a study of the stomachs of 45 individuals, most were empty, but among the remaining the prey fish were 15–50% of the length ''Hydrolycus'' itself. In 1999 two new species were Species description, described, the first in this genus in 158 years. Species There are currently four described species. * ''Hydrolycus armatus'' (Sir William Jardine, 7th Baronet, Jardine, 1841) (Payara) * ''Hydrolycus scomberoides'' (Georges Cuvier, G. Cuvier, 1819) (Payara) * ''Hydrolycus tatauaia'' Mônica de Toledo-Piza Ragazzo, Toledo-Piza, Naércio Aquino de Menezes, Menezes & Geraldo Mendes dos Santos, dos Santos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Characiform
Characiformes is an order of ray-finned fish, comprising the characins and their allies. Grouped in 18 recognized families, more than 2000 different species are described, including the well-known piranha and tetras.; Buckup P.A.: "Relationships of the Characidiinae and phylogeny of characiform fishes (Teleostei: Ostariophysi)", ''Phylogeny and Classification of Neotropical Fishes'', L.R. Malabarba, R.E. Reis, R.P. Vari, Z.M. Lucena, eds. (Porto Alegre: Edipucr) 1998:123-144. Taxonomy The Characiformes form part of a series called the Otophysi within the superorder Ostariophysi. The Otophysi contain three other orders, Cypriniformes, Siluriformes, and Gymnotiformes. The Characiformes form a group known as the Characiphysi with the Siluriformes and Gymnotiformes. The order Characiformes is the sister group to the orders Siluriformes and Gymnotiformes, though this has been debated in light of recent molecular evidence. Originally, the characins were all grouped within a single ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Characin
Characiformes is an order of ray-finned fish, comprising the characins and their allies. Grouped in 18 recognized families, more than 2000 different species are described, including the well-known piranha and tetras.; Buckup P.A.: "Relationships of the Characidiinae and phylogeny of characiform fishes (Teleostei: Ostariophysi)", ''Phylogeny and Classification of Neotropical Fishes'', L.R. Malabarba, R.E. Reis, R.P. Vari, Z.M. Lucena, eds. (Porto Alegre: Edipucr) 1998:123-144. Taxonomy The Characiformes form part of a series called the Otophysi within the superorder Ostariophysi. The Otophysi contain three other orders, Cypriniformes, Siluriformes, and Gymnotiformes. The Characiformes form a group known as the Characiphysi with the Siluriformes and Gymnotiformes. The order Characiformes is the sister group to the orders Siluriformes and Gymnotiformes, though this has been debated in light of recent molecular evidence. Originally, the characins were all grouped within a single ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gilbertolus
''Gilbertolus'' is a genus of dogtooth characins from northwestern South America, restricted to the Atrato, Magdalena and Maracaibo basins. Species There are currently three described species in this genus. * '' Gilbertolus alatus'' (Steindachner Franz Steindachner (11 November 1834 in Vienna – 10 December 1919 in Vienna) was an Austrian zoologist, ichthyologist, and herpetologist. He published over 200 papers on fishes and over 50 papers on reptiles and amphibians. Steindachner describ ..., 1878) * '' Gilbertolus atratoensis'' L. P. Schultz, 1943 * '' Gilbertolus maracaiboensis'' L. P. Schultz, 1943 References Cynodontidae Freshwater fish of Colombia Magdalena River Fish of Venezuela Taxa named by Carl H. Eigenmann Fish described in 1907 {{Characiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cynodon (fish)
''Cynodon'' is a genus of dogtooth characins from tropical South America, including the Amazon and Orinoco basins, and rivers in the Guianas.Toledo-Piza, M. (2000). The Neotropical fish subfamily Cynodontinae (Teleostei: Ostariophysi: Characiformes): a phylogenetic study and a revision of Cynodon and Rhaphiodon. Am. Mus. Novit. 3286:1-88.OPEFECyanodon.Retrieved 13 January 2017. These predatory fish reach up to in standard length. They are mainly piscivorous, but will also take insects. Species There are currently three described species in this genus: * '' Cynodon gibbus'' (Agassiz, 1829) * '' Cynodon meionactis'' Géry, Le Bail & Keith Keith may refer to: People and fictional characters * Keith (given name), includes a list of people and fictional characters * Keith (surname) * Keith (singer), American singer James Keefer (born 1949) * Baron Keith, a line of Scottish barons ..., 1999 * '' Cynodon septenarius'' Toledo-Piza, 2000 References Cynodontidae Taxa named ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world. It shares the bulk of the Southern Cone with Chile to the west, and is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. Argentina is a federal state subdivided into twenty-three provinces, and one autonomous city, which is the federal capital and largest city of the nation, Buenos Aires. The provinces and the capital have their own constitutions, but exist under a federal system. Argentina claims sovereignty over the Falkland Islands, South Georgia and the South Sandwich Islands, and a part of Antarctica. The earliest recorded human prese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guianas
The Guianas, sometimes called by the Spanish loan-word ''Guayanas'' (''Las Guayanas''), is a region in north-eastern South America which includes the following three territories: * French Guiana, an overseas department and region of France * Guyana, formerly known as British Guiana from 1831 until 1966, after the colonies of Berbice, Essequibo, and Demerara, taken from the Netherlands in 1814, were merged into a single colony * Suriname, formerly Dutch Guiana, until 1814 together with Berbice, Essequibo and Demerara In the wider context, the Guianas also includes the following two territories: * Guayana Region in eastern Venezuela ( Amazonas, Bolívar, and Delta Amacuro states), formerly the Guayana Province, alternatively known as Spanish Guayana * State of Amapá in northern Brazil, known as Portuguese Guiana (or Brazilian Guiana) History Pre-colonial period Before the arrival of European colonials, the Guianas were populated by scattered bands of native Arawak peop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Maracaibo
Lake Maracaibo (Spanish: Lago de Maracaibo; Anu: Coquivacoa) is a lagoon in northwestern Venezuela, the largest lake in South America and one of the oldest on Earth, formed 36 million years ago in the Andes Mountains. The fault in the northern section has collapsed and is rich in oil and gas resources. It is Venezuela's main oil producing area and an important fishing and agricultural producing area. It is inhabited by a quarter of the country's population and is also the place with the most frequent lightning on earth. The famous Catatumbo lightning can illuminate nighttime navigation, and eutrophication caused by oil pollution is a major environmental problem facing the lake. Geography Lake Maracaibo is located in the Maracaibo lowland in the faulted basin between the Perija Mountains and the Merida Mountains of the Eastern Cordillera Mountains in northwestern Venezuela. The lake is in the shape of a vase. It is 210 kilometers long from north to south, 121 kilometers wide from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
