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Lithogenes
''Lithogenes'' is a genus of South American catfish of the family Loricariidae. It is the only genus within the subfamily Lithogeneinae. Taxonomy ''Lithogenes'' is the only genus within the subfamily Lithogeneinae. This genus and subfamily, the most basal group in Loricariidae, is the sister group to the rest of the family. Relative to an undescribed species of Lithogeneinae, ''L. valencia'' has sister group relationship to ''L. villosus''. Species The three recognized species in this genus are: * '' Lithogenes valencia'' Provenzano, Schaefer, Baskin & Royero-Leon, 2003 * '' Lithogenes villosus'' Eigenmann, 1909 * '' Lithogenes wahari'' Schaefer & Provenzano, 2008 Appearance and anatomy As members of the family Loricariidae, all ''Lithogenes'' species have a suckermouth. However, unlike most loricariids, species of the genus ''Lithogenes'' possess armor plating only on the latter half of the body. Their eyes are small and their bodies flattened. Distribution and habitat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithogenes Valencia
''Lithogenes valencia'' is a species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ... of armored catfish found in Venezuela. This species reaches a length of . References *Schaefer, S.A. and F. Provenzano, 2008. The Lithogeninae (Siluriformes, Loricariidae): anatomy, interrelationships, and description of a new species. Am. Mus. Novit. 3637:1-49. Loricariidae Catfish of South America Fish of Venezuela Taxa named by Francisco Provenzano-Rizzi Taxa named by Scott Allen Schaefer Taxa named by Jonathan N. Baskin Taxa named by Ramiro Royero-León Fish described in 2003 {{Loricariidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithogenes Wahari
''Lithogenes wahari'' is a species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ... of armored catfish found in Venezuela. This species reaches a length of . References *Schaefer, S.A. and F. Provenzano, 2008. The Lithogeninae (Siluriformes, Loricariidae): anatomy, interrelationships, and description of a new species. Am. Mus. Novit. 3637:1-49. Loricariidae Catfish of South America Fish of Venezuela Taxa named by Scott Allen Schaefer Taxa named by Francisco Provenzano-Rizzi Fish described in 2008 {{Loricariidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithogenes Villosus
''Lithogenes villosus'' is a species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ... of armored catfish found in the Essequibo River drainage of the Potaro River in Guyana. References *Schaefer, S.A. and F. Provenzano, 2008. The Lithogeninae (Siluriformes, Loricariidae): anatomy, interrelationships, and description of a new species. Am. Mus. Novit. 3637:1-49. Loricariidae Catfish of South America Fish of Guyana Taxa named by Carl H. Eigenmann Fish described in 1909 {{Loricariidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loricariidae
The Loricariidae is the largest family of catfish (order Siluriformes), with 92 genera and just over 680 species. Loricariids originate from freshwater habitats of Costa Rica, Panama, and tropical and subtropical South America. These fish are noted for the bony plates covering their bodies and their suckermouths. Several genera are sold as " plecos", notably the suckermouth catfish, '' Hypostomus plecostomus'', and are popular as aquarium fish. Common names Members of the family Loricariidae are commonly referred to as loricariids, suckermouth armoured catfishes, or armoured catfish. The name " plecostomus", and its shortened forms "pleco" and "plec", are used for many Loricariidae, since ''Plecostomus plecostomus'' (now called '' Hypostomus plecostomus'') was one of the first loricariid species imported for the fish-keeping hobby. Some loricariids are not normally considered "plecostomus", such as '' Farlowella'' catfish. In their native range, these fish are known as ''casc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Valencia (Venezuela)
Lake Valencia ( es, Lago de Valencia), formerly Lake Tacarigua, is a lake within Carabobo State and Aragua State in northern Venezuela. Geography Lake Valencia is the third largest lake in Venezuela, after Lake Maracaibo and Lake Guri reservoir. The lake is located in one of the Aragua valleys, between the parallel sub- Serranía del Interior in the Cordillera de la Costa Central, of the Venezuelan Coastal Ranges system. The endorheic lake has natural discharge level at 427 m above sea level; the water level declined below this height about 250 years ago. Its surface level currently is 410 m above sea level, and is about 30 km long, has an area of 350 km². The maximum depth is 39 m, the mean depth 18 m. The lake has a number of small islands, with some inhabited. Its drainage basin (watershed area) of 2,646 km². The most important river emptying into the lake is the Aragua River. Others include the El Limón River, Guacara River, Güigüe River, Mariara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scott Allen Schaefer
Scott Allen Schaefer (born 1958) is an American ichthyologist working at the American Museum of Natural History as the Dean of Science for Collections, Exhibitions, and the Public Understanding of Science; he serves as the Curator-in-Charge, in the Department of Ichthyology, within the Division of Vertebrate Zoology. In addition, he is the Director of the Sackler Institute for Comparative Genomics and a professor, Richard Gilder Graduate School. He is an Adjunct Senior Research Scientist, with The Earth Institute Center for Environmental Sustainability (EICES), The Earth Institute Adjunct Research Scientist, with the Dept. of Ichthyology Columbia Climate School. Education Schaefer attended Ohio State University, where he received a Bachelor of Science degree in 1980. He attended University of South Carolina, where he received his Masters.in Science in 1982. He received his Ph. D. from the University of Chicago, in 1986 Career Schaefer studies the systematics, biogeography, and e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl H
Carl may refer to: * Carl, Georgia, city in USA * Carl, West Virginia, an unincorporated community * Carl (name), includes info about the name, variations of the name, and a list of people with the name * Carl², a TV series * "Carl", an episode of television series ''Aqua Teen Hunger Force'' * An informal nickname for a student or alum of Carleton College CARL may refer to: * Canadian Association of Research Libraries * Colorado Alliance of Research Libraries See also * Carle (other) * Charles *Carle, a surname * Karl (other) *Karle (other) Karle may refer to: Places * Karle (Svitavy District), a municipality and village in the Czech Republic * Karli, India, a town in Maharashtra, India ** Karla Caves, a complex of Buddhist cave shrines * Karle, Belgaum, a settlement in Belgaum di ... {{disambig ja:カール zh:卡尔 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catfish Genera
Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, the Mekong giant catfish from Southeast Asia, the wels catfish of Eurasia, and the piraíba of South America, to detritivores (species that eat dead material on the bottom), and even to a tiny parasitic species commonly called the candiru, ''Vandellia cirrhosa''. Neither the armour-plated types nor the naked types have scales. Despite their name, not all catfish have prominent barbels or "whiskers". Members of the Siluriformes order are defined by features of the skull and swimbladder. Catfish are of considerable commercial importance; many of the larger species are farmed or fished for food. Many of the smaller species, particularly the genus ''Corydoras'', are important in the aquarium hobby. Many catfish are nocturnal, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of South America
Fish are Aquatic animal, aquatic, craniate, gill-bearing animals that lack Limb (anatomy), limbs with Digit (anatomy), digits. Included in this definition are the living hagfish, lampreys, and Chondrichthyes, cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a vertebrate, true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed placodermi, external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bedrock
In geology, bedrock is solid rock that lies under loose material ( regolith) within the crust of Earth or another terrestrial planet. Definition Bedrock is the solid rock that underlies looser surface material. An exposed portion of bedrock is often called an outcrop. The various kinds of broken and weathered rock material, such as soil and subsoil, that may overlie the bedrock are known as regolith. Engineering geology The surface of the bedrock beneath the soil cover (regolith) is also known as ''rockhead'' in engineering geology, and its identification by digging, drilling or geophysical methods is an important task in most civil engineering projects. Superficial deposits can be very thick, such that the bedrock lies hundreds of meters below the surface. Weathering of bedrock Exposed bedrock experiences weathering, which may be physical or chemical, and which alters the structure of the rock to leave it susceptible to erosion. Bedrock may also experience sub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapid
Rapids are sections of a river where the river bed has a relatively steep gradient, causing an increase in water velocity and turbulence. Rapids are hydrological features between a ''run'' (a smoothly flowing part of a stream) and a ''cascade''. Rapids are characterized by the river becoming shallower with some rocks exposed above the flow surface. As flowing water splashes over and around the rocks, air bubbles become mixed in with it and portions of the surface acquire a white color, forming what is called "whitewater". Rapids occur where the bed material is highly resistant to the erosive power of the stream in comparison with the bed downstream of the rapids. Very young streams flowing across solid rock may be rapids for much of their length. Rapids cause water aeration of the stream or river, resulting in better water quality. Rapids are categorized in classes, generally running from I to VI. A Class 5 rapid may be categorized as Class 5.1-5.9. While Class I rapids are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venezuela
Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in the Caribbean Sea. It has a territorial extension of , and its population was estimated at 29 million in 2022. The capital and largest urban agglomeration is the city of Caracas. The continental territory is bordered on the north by the Caribbean Sea and the Atlantic Ocean, on the west by Colombia, Brazil on the south, Trinidad and Tobago to the north-east and on the east by Guyana. The Venezuelan government maintains a claim against Guyana to Guayana Esequiba. Venezuela is a federal presidential republic consisting of 23 states, the Capital District and federal dependencies covering Venezuela's offshore islands. Venezuela is among the most urbanized countries in Latin America; the vast majority of Venezuelans live in the cities of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
