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Parodontidae
The Parodontidae are a family of fresh water fish of the order Characiformes. The three genera include about 32 species, though several are undescribed. These fish are generally benthic and live in mountain streams of eastern Panama and South America. It was formerly considered a subfamily of the family Hemiodontidae. See also *Characiformes 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.: "Relationshi ... References Ray-finned fish families {{characiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parodontidae
The Parodontidae are a family of fresh water fish of the order Characiformes. The three genera include about 32 species, though several are undescribed. These fish are generally benthic and live in mountain streams of eastern Panama and South America. It was formerly considered a subfamily of the family Hemiodontidae. See also *Characiformes 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.: "Relationshi ... References Ray-finned fish families {{characiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apareiodon
''Apareiodon'' is a genus of scrapetooths from South America where they are found as far south as Río de la Plata. There are currently fifteen described species in this genus. Species * '' Apareiodon affinis'' (Steindachner, 1879) (Darter characine) * '' Apareiodon agmatos'' Taphorn, López-Fernández & C. R. Bernard, 2008 * '' Apareiodon argenteus'' Pavanelli & Britski, 2003 * '' Apareiodon cavalcante'' Pavanelli & Britski, 2003 * '' Apareiodon davisi'' Fowler, 1941 * '' Apareiodon gransabana'' W. C. Starnes & I. Schindler, 1993 * '' Apareiodon hasemani'' C. H. Eigenmann, 1916 * '' Apareiodon ibitiensis'' Amaral Campos, 1944 * '' Apareiodon itapicuruensis'' C. H. Eigenmann & Henn, 1916 * '' Apareiodon machrisi'' Travassos, 1957 * '' Apareiodon orinocensis'' Bonilla, Machado-Allison, Silvera, Chernoff, López Rojas & Lasso A lasso ( or ), also called lariat, riata, or reata (all from Castilian, la reata 're-tied rope'), is a loop of rope designed as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saccodon
''Saccodon'' is a genus of scrapetooths found in the Tumbes-Chocó-Magdalena region from Panama to northwestern Peru. Species * '' Saccodon dariensis'' (Meek & Hildebrand, 1913) * '' Saccodon terminalis'' ( C. H. Eigenmann & Henn Henn is a both a surname and an Estonian masculine given name. Notable people with the surname include: ;As a given name: * Henn-Ants Kurg (1898–1943), Estonian military colonel and diplomat * Henn Pärn (born 1941), Estonian politician * ..., 1914) * '' Saccodon wagneri'' Kner, 1863 References * Parodontidae Characiformes genera Taxa named by Rudolf Kner {{Characiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parodon
''Parodon'' is a genus of scrapetooths from South America, which can be found as far south as Río de la Plata. Species There are currently 14 recognized species in this genus: * '' Parodon alfonsoi'' Londoño-Burbano, Román-Valencia & Taphorn, 2011Londoño-Burbano, A., Román-Valencia, C. & Taphorn, D.C. (2011): ''Taxonomic review of Colombian'' Parodon ''(Characiformes: Parodontidae), with descriptions of three new species.'' Neotropical Ichthyology, 9 (4): 709-730. * '' Parodon apolinari'' G. S. Myers, 1930 * '' Parodon atratoensis'' Londoño-Burbano, Román-Valencia & Taphorn, 2011 * '' Parodon bifasciatus'' C. H. Eigenmann, 1912 * '' Parodon buckleyi'' Boulenger, 1887 * '' Parodon caliensis'' Boulenger, 1895 * '' Parodon carrikeri'' Fowler, 1940 * ''Parodon guyanensis'' Géry, 1959 * '' Parodon hilarii'' J. T. Reinhardt, 1867 * '' Parodon magdalenensis'' Londoño-Burbano, Román-Valencia & Taphorn, 2011 * '' Parodon moreirai'' Ingenito & Buckup, 2005 * '' P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apareiodon Affinis
''Apareiodon affinis'', the darter characine, is a species of fresh water ray-finned fish native to the Río de la Plata Basin in southern Brazil, Paraguay and northern Argentina. Description The darter characine is a small, fusiform fish growing to a maximum length of . Like other characids, it has a mouth on the underside of the head with a poorly developed upper lip. There are no dentary teeth and the pectoral fins have a single, unbranched fin-ray which the fish uses to prop itself up on the substrate. Ecology The darter characine is an open water fish, and was one of several fish species in a reservoir on the Paraná River to thrive when large submerged macrophytes were removed. The diet consists of diatoms, green algae and the periderm of aquatic vegetation, perhaps removed accidentally while the fish scrapes off the algae. The karyotype of this fish varies between populations. In the Upper Paraná basin, the sexes have distinct diploid numbers, the males showing 2n = 5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Characoidei
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 f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Characiformes
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] |
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] |
Hemiodontidae
The Hemiodontidae are a small family of freshwater characins found in northern South America, south to the Paraná-Paraguay Basin. The larger species are popular food fish. Hemiodontids have a streamlined body shape; many are fast-swimming, and are able to leap out of the water to escape predators. The adults of all species except ''Micromischodus sugillatus'' have no teeth on their lower jaws. Most species have a round spot on the side of the midbody and a stripe along the lower lobe of the caudal fin. The largest hemiodontids are around in length. Genera The family has around 29 known species, as well as several undescribed species, in five genera: *''Anodus'' *''Argonectes'' *''Bivibranchia'' *''Hemiodus'' *'' Micromischodus'' References *Nelson, Joseph S. (2006). ''Fishes of the World ''Fishes of the World'' by the American ichthyologist Joseph S. Nelson (1937–2011) is a standard reference for fish systematics. Now in its fifth edition (2016), the work is a compreh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southern subregion of a single continent called America. South America is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie to the northwest. The continent generally includes twelve sovereign states: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela; two dependent territories: the Falkland Islands and South Georgia and the South Sandwich Islands; and one internal territory: French Guiana. In addition, the ABC islands of the Kingdom of the Netherlands, Ascension Island (dependency of Saint Helena, Ascension and Tristan da Cunha, a British Overseas Territory), Bouvet Island ( dependency of Norway), Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panama
Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Costa Rica to the west, Colombia to the southeast, the Caribbean Sea to the north, and the Pacific Ocean to the south. Its capital and largest city is Panama City, whose metropolitan area is home to nearly half the country's million people. Panama was inhabited by indigenous tribes before Spanish colonists arrived in the 16th century. It broke away from Spain in 1821 and joined the Republic of Gran Colombia, a union of Nueva Granada, Ecuador, and Venezuela. After Gran Colombia dissolved in 1831, Panama and Nueva Granada eventually became the Republic of Colombia. With the backing of the United States, Panama seceded from Colombia in 1903, allowing the construction of the Panama Canal to be completed by the United States Army Corps of En ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benthic
The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from ancient Greek, βένθος (bénthos), meaning "the depths." Organisms living in this zone are called benthos and include microorganisms (e.g., bacteria and fungi) as well as larger invertebrates, such as crustaceans and polychaetes. Organisms here generally live in close relationship with the substrate and many are permanently attached to the bottom. The benthic boundary layer, which includes the bottom layer of water and the uppermost layer of sediment directly influenced by the overlying water, is an integral part of the benthic zone, as it greatly influences the biological activity that takes place there. Examples of contact soil layers include sand bottoms, rocky outcrops, coral, and bay mud. Description Oceans The benthic region of the ocean begins at the shore line (intertidal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
