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Hypopomidae
The Hypopomidae are a family of fishes in the order Gymnotiformes known as the bluntnose knifefish. They may also be called grass or leaf knifefishes. These electric fish are not often eaten, of little commercial importance, rarely kept as aquarium fish, and poorly studied; however, species in this family may constitute a significant fraction of the biomass in the areas they inhabit. These fish originate from fresh water in Panama and South America. The Hypopomidae are confined to the humid neotropics, ranging the Río de la Plata of Argentina (35°S) to the Río Tuira of Panama (8°N). Hypopomids are known from the continental waters of all South American countries except Chile, and are most diverse in the Amazon Basin. Description Teeth are absent on the oral jaws. Unlike the closely related Rhamphichthyidae, species of this family do not have a tubular snout, but a blunt, short one. Also, the nostrils are well separated. This family contains the smallest gymnotiforms, ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypopomidae
The Hypopomidae are a family of fishes in the order Gymnotiformes known as the bluntnose knifefish. They may also be called grass or leaf knifefishes. These electric fish are not often eaten, of little commercial importance, rarely kept as aquarium fish, and poorly studied; however, species in this family may constitute a significant fraction of the biomass in the areas they inhabit. These fish originate from fresh water in Panama and South America. The Hypopomidae are confined to the humid neotropics, ranging the Río de la Plata of Argentina (35°S) to the Río Tuira of Panama (8°N). Hypopomids are known from the continental waters of all South American countries except Chile, and are most diverse in the Amazon Basin. Description Teeth are absent on the oral jaws. Unlike the closely related Rhamphichthyidae, species of this family do not have a tubular snout, but a blunt, short one. Also, the nostrils are well separated. This family contains the smallest gymnotiforms, ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypopygus Hoedemani
''Hypopygus'' is a genus of South American gymnotiform knifefishes native to the Amazon, Orinoco and upper Paraguay basins, as well as rivers in the Guianas. They are often common, and found near submerged roots, aquatic vegetation and leaf-litter in streams, edges of rivers and floodplains. They are regularly found among vegetation in floating meadows, a habitat that often contains little oxygen, but they are well-adapted to this. They are well-camouflaged and brown in color with a banded/mottled pattern. They generally resemble the related '' Steatogenys'', but are smaller, reaching up to in total length depending on the exact species of ''Hypopygus''. The smallest is ''H. hoedemani'', which is the second-smallest knifefish, after ''Microsternarchus brevis''. They are nocturnal and feed on small invertebrates. During the day they remain hidden, often in groups that may number several dozen individuals. Taxonomy and species ''Hypopygus'' has traditionally been included in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypopygus
''Hypopygus'' is a genus of South American gymnotiform knifefishes native to the Amazon, Orinoco and upper Paraguay basins, as well as rivers in the Guianas. They are often common, and found near submerged roots, aquatic vegetation and leaf-litter in streams, edges of rivers and floodplains. They are regularly found among vegetation in floating meadows, a habitat that often contains little oxygen, but they are well-adapted to this. They are well-camouflaged and brown in color with a banded/mottled pattern. They generally resemble the related '' Steatogenys'', but are smaller, reaching up to in total length depending on the exact species of ''Hypopygus''. The smallest is ''H. hoedemani'', which is the second-smallest knifefish, after ''Microsternarchus brevis''. They are nocturnal and feed on small invertebrates. During the day they remain hidden, often in groups that may number several dozen individuals. Taxonomy and species ''Hypopygus'' has traditionally been included in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steatogenys
''Steatogenys'' is a genus of gymnotiform knifefishes found in the Amazon, Orinoco and Essequibo river basins in tropical South America. The widespread and common ''S. elegans'' is found in a wide range of habitats, from the shallow essentially static waters such as floodplain lakes to fast-flowing rivers as deep as . The two remaining species are less common and widespread, with ''A. duidae'' found mainly in small streams running through terra firme forests (forest that does not flood, unlike várzea) and ''S. ocellatus'' among submerged roots and branches in static or slow-flowing blackwater habitats. All three are regularly found among vegetation in floating meadows, a habitat that often contains little oxygen, but they are well-adapted to this. They are well-camouflaged and brown in color with a barred pattern. They resemble the related ''Hypopygus'', but are larger, reaching up to in total length depending on the exact species of ''Steatogenys''. They feed on invertebra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steatogenys Elegans
''Steatogenys elegans'', the barred knifefish, is a species of Hypopomidae (bluntnose knifefishes) found in tropical South America. It is the type species of its genus. It is an electric fish found in a wide range of freshwater habitats in the Amazon, Orinoco The Orinoco () is one of the longest rivers in South America at . Its drainage basin, sometimes known as the Orinoquia, covers , with 76.3 percent of it in Venezuela and the remainder in Colombia. It is the fourth largest river in the wor ... and Essequibo river basins. It reaches almost in total length. References Hypopomidae Weakly electric fish Fish of Bolivia Freshwater fish of Brazil Freshwater fish of Colombia Freshwater fish of Ecuador Fish of Guyana Freshwater fish of Peru Fish of Venezuela Fish of the Amazon basin Fish described in 1880 Taxa named by Franz Steindachner {{gymnotiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachyhypopomus
''Brachyhypopomus'' is a genus of fish in the family Hypopomidae (bluntnose knifefish) native primarily to tropical and subtropical South America (south to the Río de la Plata Basin), although a single species, ''B. occidentalis'', also occurs in Panama and Costa Rica.Crampton, W.G.R., de Santana, C.D., Waddell, J.C. & Lovejoy, N.R. (2016): Clifford,W,A taxonomic revision of the Neotropical electric fish genus ''Brachyhypopomus'' (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species.''Neotropical Ichthyology, 14 (4): e150146.'' They are found in a wide range of static or slow-flowing freshwater habitats such as edges of rivers, streams, floodplains and swamps, but they are absent from deep river channels (a habitat of many other knifefish). There are both species in well-oxygenated waters and poorly oxygenated waters; those in the latter have adaptions that allow them to survive this like larger gills or the capability of gulping up mouthfuls of air fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsternarchus
''Microsternarchus'' is a genus of bluntnose knifefish that is found in creeks and streams, often in areas with submerged vegetation, roots and leaf litter, in the Amazon, Orinoco, Essequibo–Rupununi and Río de la Plata basins in South America.Cox Fernandes, C., Nogueira, A., Williston, A. & Alves-Gomes, J.A. (2015): A new species of electric knifefish from the rio Negro, Amazon basin (Gymnotiformes: Hypopomidae, Microsternarchini). ''Proceedings of the Academy of Natural Sciences of Philadelphia, 164 (1): 213-227.'' The two recognized species are both small knifefish, with the largest being ''M. bilineatus'' at up to in total length. The other is ''M. brevis'', which at up to only is the world's smallest knifefish. ''Microsternarchus'' are very similar to ''Brachyhypopomus ''Brachyhypopomus'' is a genus of fish in the family Hypopomidae (bluntnose knifefish) native primarily to tropical and subtropical South America (south to the Río de la Plata Basin), although a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnotiformes
The Gymnotiformes are an order of teleost bony fishes commonly known as Neotropical knifefish or South American knifefish. They have long bodies and swim using undulations of their elongated anal fin. Found almost exclusively in fresh water (the only exceptions are species that occasionally may visit brackish water to feed), these mostly nocturnal fish are capable of producing electric fields to detect prey, for navigation, communication, and, in the case of the electric eel (''Electrophorus electricus''), attack and defense. A few species are familiar to the aquarium trade, such as the black ghost knifefish (''Apteronotus albifrons''), the glass knifefish (''Eigenmannia virescens''), and the banded knifefish (''Gymnotus carapo''). Description Anatomy and locomotion Aside from the electric eel (''Electrophorus electricus''), Gymnotiformes are slender fish with narrow bodies and tapering tails, hence the common name of "knifefishes". They have neither pelvic fins nor dorsal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsternarchus Brevis
''Microsternarchus'' is a genus of bluntnose knifefish that is found in creeks and streams, often in areas with submerged vegetation, roots and leaf litter, in the Amazon, Orinoco, Essequibo–Rupununi and Río de la Plata basins in South America.Cox Fernandes, C., Nogueira, A., Williston, A. & Alves-Gomes, J.A. (2015): A new species of electric knifefish from the rio Negro, Amazon basin (Gymnotiformes: Hypopomidae, Microsternarchini). ''Proceedings of the Academy of Natural Sciences of Philadelphia, 164 (1): 213-227.'' The two recognized species are both small knifefish, with the largest being ''M. bilineatus'' at up to in total length. The other is ''M. brevis'', which at up to only is the world's smallest knifefish. ''Microsternarchus'' are very similar to ''Brachyhypopomus ''Brachyhypopomus'' is a genus of fish in the family Hypopomidae (bluntnose knifefish) native primarily to tropical and subtropical South America (south to the Río de la Plata Basin), although a si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypopomus
''Hypopomus artedi'' is a species of bluntnose knifefish that is found in Argentina, Brazil, French Guiana, Guyana and Suriname. This species can reach a length of SL. It can also be found in the aquarium trade. It is the only member of its 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 com .... References External links Photograph Hypopomidae Fish of South America Fish of Brazil Fish of Argentina Monotypic freshwater fish genera Taxa named by Theodore Gill {{gymnotiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akawaio (fish)
''Akawaio penak'' is a species of bluntnose knifefish native to the upper Mazaruni River, Guyana. This species is the only known member of its 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 com ....Maldonado-Ocampo, J.A., López-Fernández, H., Taphorn, D.C., Bernard, C.R., Crampton, W.G.R. & Lovejoy, N.R. (2014)''Akawaio penak'', a new genus and species of Neotropical electric fish (Gymnotiformes, Hypopomidae) endemic to the upper Mazaruni River in the Guiana Shield.''Zoologica Scripta, 43 (1): 24–33.'' References Hypopomidae Fish described in 2014 {{Gymnotiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhamphichthyidae
Sand knifefish are freshwater electric fish of the family Rhamphichthyidae, from freshwater habitats in South America. Just like most part of the members of the Gymnotiformes group, they also have elongated and compressed bodies and electric organs. The long anal fin actually extends from before the pectoral fins to the tip of the tail. There is no dorsal fin. Teeth are absent in the oral jaws and the snout is very long and tubular. The nostrils are very close together. This group is sometimes known as the tubesnout knifefishes for this reason. They are nocturnal and burrow in the sand during the day. Genera According to FishBase there are only three genera in this family, but a comprehensive molecular study from 2015 showed that two additional genera belong here (formerly in Hypopomidae, marked with stars* in list), and this has been followed by recent authorities. *'' Gymnorhamphichthys'' *'' Hypopygus''* *'' Iracema'' *'' Rhamphichthys'' *'' Steatogenys''* See also * Li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
