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Acanthocleithron
''Acanthocleithron chapini'' is the only species of catfish (order Siluriformes) in the genus ''Acanthocleithron'' of the family Mochokidae. This species is endemic to the Democratic Republic of the Congo where it occurs in the Ituri River and Congo River from Kisangani to Stanley Pool. This oviparous fish reaches a length of SL. References External links ''Acanthocleithron chapini''at DigiMorph Digital MorphologyDigiMorph, part of the National Science Foundation Digital Libraries Initiative, creates and shares 2D and 3D visualizations of the internal and external structure of living and extinct vertebrates, and a growing number of 'inverte ...: 3D visualizations of the head Mochokidae Catfish of Africa Fish described in 1917 Endemic fauna of the Democratic Republic of the Congo Fish of the Democratic Republic of the Congo Taxa named by Ludlow Griscom {{mochokidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mochokidae
The Mochokidae are a family of catfishes ( order Siluriformes) that are known as the squeakers and upside-down catfish (although not all species swim upside-down). There are nine genera and about 200 species of mochokids. All the mochokids are freshwater species originating from Africa. They have three pairs of barbels, with the nasal barbels absent; sometimes, the mandibular barbels may be branched. The lips are modified into a suckermouth in '' Atopochilus'', '' Chiloglanis'', and '' Euchilichthys''. The adipose fin is usually very long. The dorsal and pectoral fins have spines that are usually strong and with a locking mechanism. They range in size up to SL. This group contains many popular species among aquarists, such as '' Synodontis nigriventris'', ''Synodontis angelicus ''Synodontis angelicus'' is a species of upside-down catfish commonly named polkadot squeaker, black clown catfish, whitespotted squeaker, pearl squeaker, or angel squeaker. This species is native to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Treadwell Nichols
John Treadwell Nichols (June 11, 1883 – November 10, 1958) was an American ichthyologist and ornithologist. Life and career Nichols was born in Jamaica Plain, Boston, Massachusetts, the son of Mary Blake (Slocum) and John White Treadwell Nichols. In 1906 he studied vertebrate zoology at Harvard College, where he graduated with a Bachelor of Arts (AB). In 1907 he joined the American Museum of Natural History as assistant in the department of mammalogy. In 1913 he founded ''Copeia'', the official journal of the American Society of Ichthyologists and Herpetologists. In 1916 he described the long lost Bermuda petrel together with Louis Leon Arthur Mowbray who first sighted this bird within a flock of other petrels in 1906 on Castle Island, Bermuda 45 years before it was officially rediscovered by Mowbray's son Louis. He also described the fish genus ''Bajacalifornia''. He also worked with a team of scientists from the American Museum of Natural History during the Jersey Shore sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kisangani
Kisangani (formerly Stanleyville or Stanleystad) is the capital of Tshopo province in the Democratic Republic of the Congo. It is the fifth most populous urban area in the country, with an estimated population of 1,312,000 in 2021, and the largest of the cities that lie in the tropical woodlands of the Congo. Some from the mouth of the Congo River, Kisangani is the farthest navigable point upstream. Kisangani is the nation's most important inland port after Kinshasa, an important commercial hub point for river and land transportation and a major marketing and distribution centre for the north-eastern part of the country. It has been the commercial capital of the northern Congo since the late 19th century. History Before Henry Morton Stanley, working on behalf of King Leopold II of the Belgians, founded what would become Stanley Falls Station in 1883, on the Island of Wana Rusari in the Congo River, the area was inhabited by a native Congolese tribe known as the Clans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of The Democratic Republic Of The Congo
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example ''Cytisus aeolicus'' is an endemite of the Italian flora. ''Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1917
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 fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catfish Of Africa
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] |
Monotypic Fish Genera
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda.' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DigiMorph
Digital MorphologyDigiMorph, part of the National Science Foundation Digital Libraries Initiative, creates and shares 2D and 3D visualizations of the internal and external structure of living and extinct vertebrates, and a growing number of 'invertebrates.' The information core for the DigiMorph library is generated using a high-resolution X-ray computed tomographic (X-ray CT) scanner at the University of Texas at Austin. This instrument is comparable to a conventional medical diagnostic CAT scanner, but with greater resolution and penetrating power. The device uses X-rays to take images of thin slices through solid objects, such as bone and rock. Hundreds to thousands of slices are stacked up to create a three-dimensional model of the object, allowing researchers to peer inside without damaging it. As of 2007, the DigiMorph library contains over a terabyte of imagery of natural history specimens that are important to education and research efforts. The DigiMorph library site now se ... [...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 (shark Sharks are a group of elasmobranch fish chara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oviparity
Oviparous animals are animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive method of most fish, amphibians, most reptiles, and all pterosaurs, dinosaurs (including birds), and monotremes. In traditional usage, most insects (one being '' Culex pipiens'', or the common house mosquito), molluscs, and arachnids are also described as oviparous. Modes of reproduction The traditional modes of reproduction include oviparity, taken to be the ancestral condition, traditionally where either unfertilised oocytes or fertilised eggs are spawned, and viviparity traditionally including any mechanism where young are born live, or where the development of the young is supported by either parent in or on any part of their body. However, the biologist Thierry Lodé recently divided the traditional category of oviparous reproduction into two modes that he named ovuliparity and (true) oviparity respectively. He distinguished ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stanley Pool
The Pool Malebo, formerly Stanley Pool, also known as Mpumbu, Lake Nkunda or Lake Nkuna by local indigenous people in pre-colonial times, is a lake-like widening in the lower reaches of the Congo River."Malebo Pool" '' Encyclopædia Britannica''. Accessed June 2011. The river serves as the border between the on the north and the Democratic Republic of the Congo to the south. The pool's former name was in honour of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ituri River
The Ituri River is a river of the Democratic Republic of the Congo. It is the main tributary of the Aruwimi River, which forms where the Ituri meets the Nepoko River. It gives its name to Ituri Province. Course The Ituri has its headwaters in province of Haut-Uélé in the mountains to the west of Lake Albert, about north of Kaladau. It flows generally south into Ituri province, and flows past Mongbwalu to the east. It is joined from the left by Shari River to the northeast of Irumu about south-southwest of Bunia. It is joined from the left by the Malibongo River near Komanda Helipad. From there it flows in a generally westward direction to Bomili in Tshopo province, where it is joined by the Nepoko River to form the Aruwimi. The Ituri is long. The Aruwimi is long, giving a combined length of . The river flows through the Ituri Rainforest. About one-fifth of the rainforest is made up of the Okapi Wildlife Reserve, a World Heritage Site A World Heritage Site is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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