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Heterobranchus
''Heterobranchus'' is a genus of airbreathing catfishes native to Africa. However, ''H. palaeindicus'', the only known extinct species of the genus, was discovered in the Siwalik Hills, India, dating to the Lower Pliocene. Depending on the exact species involved, fish of this genus reach from with ''H. longifilis'' being the largest strict freshwater fish in southern Africa, reaching SL and weighing up to . Species This genus contains four recent and two fossil species: Recent species *'' Heterobranchus bidorsalis'' É. Geoffroy Saint-Hilaire, 1809 (African Catfish) *'' Heterobranchus boulengeri'' ( Pellegrin, 1922) *'' Heterobranchus isopterus'' ( Bleeker, 1863) —found in West Africa— *''Heterobranchus longifilis'' Valenciennes Valenciennes (, also , , ; nl, label=also Dutch, Valencijn; pcd, Valincyinnes or ; la, Valentianae) is a commune in the Nord department, Hauts-de-France, France. It lies on the Scheldt () river. Although the city and region experien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterobranchus Austriacus
''Heterobranchus'' is a genus of airbreathing catfishes native to Africa. However, ''H. palaeindicus'', the only known extinct species of the genus, was discovered in the Siwalik Hills, India, dating to the Lower Pliocene. Depending on the exact species involved, fish of this genus reach from with ''H. longifilis'' being the largest strict freshwater fish in southern Africa, reaching SL and weighing up to . Species This genus contains four recent and two fossil species: Recent species *'' Heterobranchus bidorsalis'' É. Geoffroy Saint-Hilaire, 1809 (African Catfish) *'' Heterobranchus boulengeri'' ( Pellegrin, 1922) *'' Heterobranchus isopterus'' (Bleeker, 1863) —found in West Africa— *''Heterobranchus longifilis'' Valenciennes Valenciennes (, also , , ; nl, label=also Dutch, Valencijn; pcd, Valincyinnes or ; la, Valentianae) is a commune in the Nord department, Hauts-de-France, France. It lies on the Scheldt () river. Although the city and region experience ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterobranchus Palaeindicus
''Heterobranchus'' is a genus of airbreathing catfishes native to Africa. However, ''H. palaeindicus'', the only known extinct species of the genus, was discovered in the Siwalik Hills, India, dating to the Lower Pliocene. Depending on the exact species involved, fish of this genus reach from with ''H. longifilis'' being the largest strict freshwater fish in southern Africa, reaching SL and weighing up to . Species This genus contains four recent and two fossil species: Recent species *'' Heterobranchus bidorsalis'' É. Geoffroy Saint-Hilaire, 1809 (African Catfish) *'' Heterobranchus boulengeri'' ( Pellegrin, 1922) *'' Heterobranchus isopterus'' (Bleeker, 1863) —found in West Africa— *''Heterobranchus longifilis'' Valenciennes, 1840 (Vundu; Sampa) Fossil species * †''Heterobranchus austriacus ''Heterobranchus'' is a genus of airbreathing catfishes native to Africa. However, ''H. palaeindicus'', the only known extinct species of the genus, was discovered in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterobranchus Bidorsalis
''Heterobranchus bidorsalis'', the African catfish or eel-like fattyfin catfish, is an airbreathing catfish found in Africa. It is closely related to the vundu catfish, which is well-known among fishermen. Description The head of ''Heterobranchus bidorsalis'' is shaped like an oval and has a rectangular dorsum. The snout is round and the eyes are lateral. The frontal fontanelle is long and narrow while the occipital fontanelle is relatively long and is shaped like an oval. The postorbital bones are completely united. The suprabranchial organ is well developed. The pectoral spine is smooth. The body and fins may have spots. It can reach a length of 150 cm (59.0 inches) TL. The maximum recorded weight for this species is 30.0 kg. The species has 40-46 dorsal (in the back) soft rays, 49-58 anal soft rays, and 62-63 vertebrate. Relationship to humans This fish is commercially fished for human consumption. In studies on the effects of pollution on this fish it was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterobranchus Longifilis
The vundu (''Heterobranchus longifilis'') is a species of large airbreathing catfish found widely in rivers and other freshwater habitats of sub-Saharan Africa, as well as the Nile. It is also called the sampa, cur, lenda, or certa. Description The vundu is the largest true freshwater fish in southern Africa, reaching up to in length and in weight. (Bull sharks are also found in southern Africa and reach a larger size, but occur in both fresh and saltwater.) Few other catfish have such large second dorsal fins (adipose fins) or such long barbels as do the vundu. Its barbels nearly reach to the origin of the pelvic fin. The colour of ''Heterobranchus longifilis'' is light to dark olive brown on its dorsal surface, getting lighter over the mid-body to a light brown. Its belly is off-white. Fins are usually light brown. In aquaculture, it is sometimes hybridized with another very large species, the African sharptooth catfish (''Clarias gariepinus''), resulting in offspring known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterobranchus Boulengeri
''Heterobranchus boulengeri'' is a species of airbreathing catfish found in the Democratic Republic of the Congo, Zambia and Zimbabwe. It is found in Lake Mweru, the Lukonzolwa River and the upper Congo River. Etymology The fish is named in honor of ichthyologist-herpetologist George A. Boulenger (1858-1937), of the British Museum (Natural History), who had described many of the fishes from Central Africa and the Congo River system. Description ''Heterobranchus boulengeri'' has short barbels. Its gill arches extend anteriorly. This species can reach 64.0 cm (25.2 inches) TL in length. Habitat ''Heterobranchus boulengeri'' is found in tropical freshwater rivers and lakes. It is demersal The demersal zone is the part of the sea or ocean (or deep lake) consisting of the part of the water column near to (and significantly affected by) the seabed and the benthos. The demersal zone is just above the benthic zone and forms a layer of ..., preferring the bottom of these bod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterobranchus Isopterus
''Heterobranchus isopterus'' is a species of airbreathing catfish found in West Africa West Africa or Western Africa is the westernmost region of Africa. The United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Maurit .... References Fish of Africa Clariidae Fish described in 1863 Taxa named by Pieter Bleeker {{catfish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airbreathing Catfish
Airbreathing catfish comprise the family Clariidae of the order Siluriformes. Sixteen genera and about 116 species of clariid fishes are described; all are freshwater species. Other groups of catfish also breathe air, such as the Callichthyidae and Loricariidae. Distribution Although clariids occur in India, Syria, southern Turkey, and large parts of Southeast Asia, their diversity is the largest in Africa. Description Clariid catfish are characterized by an elongated body, the presence of four barbels, long dorsal and anal fins, and especially by the autapomorphic presence of a supra branchial organ, formed by tree-like structures from the second and fourth gill arches. This suprabranchial organ, or labyrinth organ, allows some species the capability of traveling short distances on land (walking catfish). The dorsal fin base is very long and is not preceded by a fin spine. The dorsal fin may or may not be continuous with the caudal fin, which is rounded. Pectoral and pelvic f ... [...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] |
Extinction
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achille Valenciennes
Achille Valenciennes (9 August 1794 – 13 April 1865) was a French zoologist. Valenciennes was born in Paris, and studied under Georges Cuvier. His study of parasitic worms in humans made an important contribution to the study of parasitology. He also carried out diverse systematic classifications, linking fossil and current species. He worked with Cuvier on the 22-volume "'' Histoire Naturelle des Poissons''" (Natural History of Fish) (1828–1848), carrying on alone after Cuvier died in 1832. In 1832, he succeeded Henri Marie Ducrotay de Blainville (1777–1850) as chair of ''Histoire naturelle des mollusques, des vers et des zoophytes'' at the Muséum national d'histoire naturelle. Early in his career, he was given the task of classifying animals described by Alexander von Humboldt (1769–1859) during his travels in the American tropics (1799 to 1803), and a lasting friendship was established between the two men. He is the binomial authority for many species of fish, such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pieter Bleeker
Pieter Bleeker (10 July 1819 – 24 January 1878) was a Dutch medical doctor, ichthyologist, and herpetologist. He was famous for the ''Atlas Ichthyologique des Indes Orientales Néêrlandaises'', his monumental work on the fishes of East Asia published between 1862 and 1877. Life and work Bleeker was born on 10 July 1819 in Zaandam. He was employed as a medical officer in the Royal Netherlands East Indies Army from 1842 to 1860, (in French). stationed in the Dutch East Indies (now Indonesia). During that time, he did most of his ichthyology work, besides his duties in the army. He acquired many of his specimens from local fishermen, but he also built up an extended network of contacts who would send him specimens from various government outposts throughout the islands. During his time in Indonesia, he collected well over 12,000 specimens, many of which currently reside at the Naturalis Biodiversity Center in Leiden. Bleeker corresponded with Auguste Duméril of Paris. His wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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