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Megalechis
''Megalechis'' is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family. Taxonomy The name is derived from the Greek ''megas'', meaning "great", and the Greek ''lekis'', meaning "plate". No uniquely derived features are known for ''Megalechis''. A change in the synonymy of the species of ''Megalechis'' occurred in 2005. It is especially confusing because the name ''M. thoracata'' remains valid, but applies to the species formerly known as ''M. personata'', which becomes a new junior synonym of ''M. thoracata''. On the other hand, the species formerly known as ''M. thoracata'' is now named ''M. picta''. Species There are currently two recognized species in this genus: * '' Megalechis picta'' ( J. P. Müller & Troschel, 1849) (Spotted hoplo) * '' Megalechis thoracata'' (Valenciennes, 1840) Distribution Both species of ''Megalechis'' are distributed east of the Andes in the northern portion of South America, including the Amazona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megalechis
''Megalechis'' is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family. Taxonomy The name is derived from the Greek ''megas'', meaning "great", and the Greek ''lekis'', meaning "plate". No uniquely derived features are known for ''Megalechis''. A change in the synonymy of the species of ''Megalechis'' occurred in 2005. It is especially confusing because the name ''M. thoracata'' remains valid, but applies to the species formerly known as ''M. personata'', which becomes a new junior synonym of ''M. thoracata''. On the other hand, the species formerly known as ''M. thoracata'' is now named ''M. picta''. Species There are currently two recognized species in this genus: * '' Megalechis picta'' ( J. P. Müller & Troschel, 1849) (Spotted hoplo) * '' Megalechis thoracata'' (Valenciennes, 1840) Distribution Both species of ''Megalechis'' are distributed east of the Andes in the northern portion of South America, including the Amazona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megalechis Picta
''Megalechis picta'', the Tail bar armored catfish, Tail bar hoplo or Spotted Hoplo, is a species of catfish of the family Callichthyidae. ''M. picta'' occurs east of the Andes in the Amazon, Orinoco, and upper Essequibo River basins, and coastal rivers of northern Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area .... References * Megalechis Fish of Bolivia Freshwater fish of Brazil Freshwater fish of Colombia Freshwater fish of Ecuador Freshwater fish of Peru Fish of the Amazon basin Taxa named by Johannes Peter Müller Taxa named by Franz Hermann Troschel Fish described in 1848 {{callichthyidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megalechis Thoracata
''Megalechis thoracata'' (black marble hoplo, spotted hoplo) is a species of catfish of the family Callichthyidae. ''M. thoracata'' is found east of the Andes in the Amazon, Orinoco, and upper Paraguay River basins, as well as in the coastal rivers of the Guianas and northern Brazil. Recent introductions were recorded in the upper Paraná River drainage. Care in captivity Overview: The Spotted Hoplo Catfish is an incredibly hardy and relatively easy species to keep in captivity, with the main difficulty being the maximum size of around 6 inches, or 15 cm.They are a very peaceful fish, with the only exception being when the males are guarding a bubble nest at breeding time. They can be kept with almost all tankmates, but they will likely eat anything that can fit in their mouths. This rule also applies for larger fish, as the Hoplo may get eaten or have its barbels or fins damaged by large, potentially aggressive fish, such as South American Cichlids, African Cichlids, large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callichthyidae
Callichthyidae is a family of catfishes ( order Siluriformes), called armored catfishes due to the two rows of bony plates (or scutes) along the lengths of their bodies. It contains some of the most popular freshwater aquarium fish, such as many species in the genus ''Corydoras''. Taxonomy The family derives its name from the Greek words ''kallis'' (beautiful) and ''ichthys'' (fish). Callichthyidae is one of six families in the superfamily Loricarioidea, and is sister to a clade formed by Scoloplacidae, Astroblepidae, and Loricariidae. Within the family Callichthyidae, the two subfamilies have eight genera and about 177 species, accounting for about 7% of all catfish. Most of these species are in the genus ''Corydoras'', the largest catfish genus. The subfamily Corydoradinae includes about 90% of the species in the family Callichthyidae and is one of the most diverse siluriform assemblages in the Neotropics, with about 170 valid species. It includes two tribes, Aspidoradini and C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roberto Esser Dos Reis
Roberto Esser dos Reis, is a Brazilian ichthyologist, professor and Curator of Fishes at the Pontifical Catholic University of Rio Grande do Sul. Among other duties, Reis has been working at the University of São Paulo, Brazil, the University of Michigan, Ann Arbor, and the University of Central Florida, Orlando, Florida, United States. Most of his research as an ichthyologist regards different types of South American catfish. He is also chair for South America of the Freshwater Fish Specialist Group, Species Survival Commission, and advises the IUCN on the biological aspects of the conservation of threatened species Threatened species are any species (including animals, plants and fungi) which are vulnerable to endangerment in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of '' critical depen .... Reis authored more than 120 original journal papers, and four books. Reis is Chief Editor of the Checklist of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tree Of Life Web Project
The Tree of Life Web Project is an Internet project providing information about the diversity and phylogeny of life on Earth. This collaborative peer reviewed project began in 1995, and is written by biologists from around the world. The site has not been updated since 2011, however the pages are still accessible. The pages are linked hierarchically, in the form of the branching evolutionary tree of life, organized cladistically. Each page contains information about one particular group of organisms and is organized according to a branched tree-like form, thus showing hypothetical relationships between different groups of organisms. In 2009 the project ran into funding problems from the University of Arizona. Pages and Treehouses submitted took a considerably longer time to be approved as they were being reviewed by a small group of volunteers, and apparently, around 2011, all activities ended. History The idea of this project started in the late 1980s. David Maddison was wor ... [...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, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and 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 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 external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Most f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoplosternum Littorale
''Hoplosternum littorale'' is a species of catfish (order Siluriformes) belonging to the Callichthyinae subfamily of the family Callichthyidae. It is known as tamuatá in Brazil, atipa in French Guiana, hassa in Guyana, kwi kwi (or kwie kwie'' in Suriname, cascadu or cascadura in Trinidad and Tobago, and busco or currito in Venezuela. Description ''H. littorale'' is armor-plated and dorso-ventrally compressed. The fish will grow in length up to 24.0 centimetres (9.4 in) TL. Males grow to a larger average and maximum size than females and, during the reproductive season, develop fat deposits in the pectoral fin and an elongated recurved pectoral spine that often assumes a reddish colour. Males with recurved pectoral spines are not found outside of the reproductive period. Distribution ''H. littorale'' has the widest distribution of any callichthyid. It is present in all of South America east of the Andes and north of Buenos Aires, including the Orinoco, Trinidad, coas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pectoral Fin
Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as seen in sharks. Apart from the tail or caudal fin, fish fins have no direct connection with the spine and are supported only by muscles. Their principal function is to help the fish swim. Fins located in different places on the fish serve different purposes such as moving forward, turning, keeping an upright position or stopping. Most fish use fins when swimming, flying fish use pectoral fins for gliding, and frogfish use them for crawling. Fins can also be used for other purposes; male sharks and mosquitofish use a modified fin to deliver sperm, thresher sharks use their caudal fin to stun prey, reef stonefish have spines in their dorsal fins that inject venom, anglerfish use the first spine of their dorsal fin like a fishing rod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Measurement
Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. Simply put, this measurement excludes the length of the caudal (tail) fin. * Total length (TL) is the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. It is a straight-line measure, not measured over the curve of the body. Standard length measurements are used with Teleostei (most bony fish), while total length measurements are used with Myxini (hagfish), Petromyzontiformes (lampreys), and (usually) Elasmobranchii (sharks and rays), as well as some other fishes. Total length meas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centimetre
330px, Different lengths as in respect to the Electromagnetic spectrum, measured by the Metre and its deriveds scales. The Microwave are in-between 1 meter to 1 millimeter. A centimetre (international spelling) or centimeter (American spelling) (SI symbol cm) is a Units of measurement, unit of length in the International System of Units (SI), equal to one hundredth of a metre, ''centi'' being the SI prefix for a factor of . The centimetre was the base unit of length in the now deprecated centimetre–gram–second (CGS) system of units. Though for many physical quantities, SI prefixes for factors of 103—like ''milli-'' and ''kilo-''—are often preferred by technicians, the centimetre remains a practical unit of length for many everyday measurements. A centimetre is approximately the width of the fingernail of an average adult person. Equivalence to other units of length : One millilitre is defined as one cubic centimetre, under the SI system of units. Other uses In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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