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Notopteridae
The family Notopteridae contains 10 species of osteoglossiform (bony-tongued) fishes, commonly known as featherbacks and knifefishes. These fishes live in freshwater or brackish environments in Africa and South and Southeast Asia. With the denotation of "knifefish", the notopterids should not be confused with Gymnotiformes, the electric knifefishes from South and Central America. Although their manner of swimming is similar and they are superficially similar in appearance, the two groups are not closely related. A few of the larger species, especially ''Chitala ornata'', are food fish and occasionally aquarium pets. The name is from Greek ''noton'' meaning "back" and ''pteron'' meaning "fin". Fossils The earliest fossils of this family are of '' Notopteridarum'' and ''Notopterus'' from the Late Cretaceous of India, about 70.6 to 66 million years ago. These fossils originate from the Rangapur microvertebrate site and Naskal microvertebrate site of Andhra Pradesh, which are part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chitala
''Chitala'' is a genus of fish of the family Notopteridae. This genus contains six species, in which some are important in aquaculture and the aquarium industry. They are commonly known as the Asian knifefishes or featherbacks. They are native to freshwater in South and Southeast Asia. The largest fish in the genus (and also the family) is ''Chitala lopis'', which grows up to a length of . Other well-known species are the clown knifefish (''C. ornata'') and the Indochina knifefish (''C. blanci''). Species There are six recognized species in this genus. In the past some of these (notably ''C. ornata'') were included in ''C. chitala'',Roberts, T.R. (1992). ''Systematic revision of the old world freshwater fish family Notopteridae.'' Ichthyol. Explor. Freshwat. 2(4):361-383. resulting in considerable confusion, especially in the fishing and aquarium industries.Seriously Fish: Chitala chitala.' Retrieved 24 May 2014 * '' Chitala blanci'' ( François d'Aubenton-Carafa, 1965) (In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chitala Ornata
The clown featherback, clown knifefish, or spotted knifefish, ''Chitala ornata'', is a nocturnal tropical fish with a long, knife-like body. This knifefish is native to freshwater habitats in Cambodia, Laos, Thailand, and Vietnam, but it has also been introduced to regions outside its native range. It is one of the world's most invasive species. It is often seen in aquaculture and the aquarium trade, where it is frequently confused with '' Chitala chitala''; the latter species is very rare in the aquarium trade.Seriously Fish: Chitala ornata.' Retrieved 24 May 2014 The clown featherback reaches in length, outgrowing all but the largest aquaria, yet it is popular. Distribution This species is native to Cambodia, Laos, Thailand, and Vietnam, where found in the Mekong, Chao Phraya, and Meklong River basins. It has also been introduced to regions outside its native range, including the Philippines, Indonesia, Myanmar, Singapore, Sri Lanka, Malaysia and Palm Beach County, F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notopterus
The bronze featherback (''Notopterus notopterus''; as, কান্ধুলি ''kandhuli'', bn, ফলি, bn, কাংলা,, th, ปลาสลาด, ปลาฉลาด, ปลาตอง, Vietnamese: ''Cá thát lát'', my, ငါးဖယ်) is a ray-finned fish in the family Notopteridae found in South and Southeast Asia. Although primarily found in fresh water, it has been known to enter brackish water. At present, it is the only member of the genus ''Notopterus'', but as currently defined, it is likely a species complex. Description Young specimens are a dark bronze-like color that becomes lighter with age. The species reaches a length up to . The bronze featherback can easily be kept in an aquarium. Popular as food, this fish also appears in a stamp of the Kingdom of Laos. As food This fish has been used as food in Southeast Asia since ancient times, and remains an important food item in countries such as Indonesia, Laos, Myanmar (Burma), and Thailan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenomystus Nigri
The African brown knifefish (''Xenomystus nigri''), is the only species in the genus ''Xenomystus'' of the family Notopteridae. This fish is found in the Lake Chad, Chad, Nile River, Nile, Congo River, Congo, Ogooué River, Ogowe and Niger River, Niger basins, as well as coastal river basins in Sierra Leone, Liberia, Togo, Benin and Cameroon. Anatomy and appearance This fish reaches 30 cm (12 in) in fish measurement, standard length. The body of these fish is unusual; it is ventrolaterally flattened and elongated, giving the appearance of a knife blade. The caudal fin, caudal and anal fins are fused and run from beneath the gill opening to the pointed end of the body, creating a uniform, skirt-like fin. This appendage gives the animal superior control in the water, as it is able to propel itself forward and backward with a minimum of wasted energy. The pelvic fins are extremely reduced and are not used in locomotion. The dorsal fin is absent. The pectoral fins of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papyrocranus Congoensis
''Papyrocranus congoensis'' is a species of ray-finned fish in the family Notopteridae found in the Congo River The Congo River ( kg, Nzâdi Kôngo, french: Fleuve Congo, pt, Rio Congo), formerly also known as the Zaire River, is the second longest river in Africa, shorter only than the Nile, as well as the second largest river in the world by discharge ... basin of Africa. References Notopteridae Freshwater fish of Africa Fish described in 1932 Endemic fauna of the Democratic Republic of the Congo {{Osteoglossiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papyrocranus Afer
The reticulated knifefish (''Papyrocranus afer'') is a species of freshwater fish in the family Notopteridae, the featherbacks, found in tropical West Africa. It reaches a maximum length of and a reported weight of . Description The reticulated knifefish usually grows to a length of about . It is laterally flattened and has very small scales. Like other featherbacks, the dorsal fin projects from its back rather like a feather; this fin has no spines and just two soft rays. The fish has an elongated anal fin with no spines and between 113 and 141 soft rays. This is united with the small caudal fin. There are no pelvic fins. The anal fin provides propulsion, either forwards or backwards, undulating from side to side with a rippling movement. Distribution This fish is native to tropical West Africa. It occurs in the Niger basin and other coastal river basins including the Tano River and Pra River basins in Ghana, and the Cross River and Sanaga River basins to the east of the Nige ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papyrocranus
''Papyrocranus'' is a genus of freshwater fishes in family Notopteridae found in Middle and West Africa. Species * ''Papyrocranus afer'' ( Günther, 1868) (reticulated knifefish) * ''Papyrocranus congoensis'' (Nichols Nichols may refer to: People *Nichols (surname) *Nichol, a surname Places Canada * Nichols Islands, Nunavut United States * Nichols, California, an unincorporated community * Nichols Canyon, Los Angeles, California * Nichols, Connecticut * Nich ... & La Monte, 1932) References * Notopteridae Freshwater fish genera {{Osteoglossiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chitala Borneensis
The Indonesian featherback (''Chitala borneensis'') is a species of knifefish from freshwater habitats in Southeast Asia. The details of its range are not entirely clear, with FishBase reporting that it occurs in Sumatra, Borneo, and the Malay Peninsula, while Catalog of Fishes considers it endemic to Borneo. There has been considerable taxonomic confusion between this species and '' C. lopis''; it was argued as recent as 1992 that the two are variants of a single species, but later authorities have recognized them as separate.Kottelat, M., and Lim, K.K.P. (1995). Freshwater fishes of Sarawak and Brunei Darussalam: a preliminary annotated check-list. The Sarawak Museum Journal (New Series) v. 48 (no. 69): 227-256.Parenti, L.R., and Downing Meisner, A.L. (2003). Fishes of the Belait River. Brunei Museum Journal 10: 17–54. ''C. borneensis'' reaches at least in standard length.Parenti, L.R., and Lim. K.K.P. (2005). Fishes of the Rajang Basin, Sarawak, Malaysia. The Raffle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osteoglossiform
Osteoglossiformes (Greek: "bony tongues") is a relatively primitive order of ray-finned fish that contains two sub-orders, the Osteoglossoidei and the Notopteroidei. All of at least 245 living species inhabit freshwater. They are found in South America, Africa, Australia and southern Asia, having first evolved in Gondwana before that continent broke up. In 2008 several new species of marine osteoglossiforms was described from the Danish Eocene Fur Formation dramatically increases the diversity of this group. This implies that the Osteoglossomorpha is not a primary freshwater fish group with the osteoglossiforms having a typical Gondwana distribution. The Gymnarchidae (the only species being '' Gymnarchus niloticus'', the African knifefish) and the Mormyridae are weakly electric fish able to sense their prey using electric fields. The mooneyes ( Hiodontidae) are often classified here, but may also be placed in a separate order, Hiodontiformes. Members of the order are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chitala Blanci
The royal knifefish or Indochina featherback, ''Chitala blanci'', is a species of ray-finned fish in the family Notopteridae found in the Mekong basin in Cambodia, Laos, Thailand and Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i .... In the aquarium The royal knifefish, often sold as the royal clown knifefish, is occasionally sold in the aquarium trade. References Chitala Fish of Southeast Asia Near threatened animals Fish described in 1965 Taxonomy articles created by Polbot {{Osteoglossiformes-stub ... [...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 d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brackish
Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuaries, or it may occur in brackish fossil aquifers. The word comes from the Middle Dutch root '' brak''. Certain human activities can produce brackish water, in particular civil engineering projects such as dikes and the flooding of coastal marshland to produce brackish water pools for freshwater prawn farming. Brackish water is also the primary waste product of the salinity gradient power process. Because brackish water is hostile to the growth of most terrestrial plant species, without appropriate management it is damaging to the environment (see article on shrimp farms). Technically, brackish water contains between 0.5 and 30 grams of salt per litre—more often expressed as 0.5 to 30 parts per thousand (‰), which is a spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
