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Neochanna
''Neochanna'' is a genus of galaxiid fishes, commonly known as mudfish, which are native to New Zealand and south-eastern Australia. Species The recognized species in this genus are: * '' Neochanna apoda'' Günther, 1867 (brown mudfish) * '' Neochanna burrowsius'' (Phillipps, 1926) (Canterbury mudfish) * '' Neochanna cleaveri'' ( Scott, 1934) (Tasmanian mudfish) * '' Neochanna diversus'' Stokell, 1949 (black mudfish) * '' Neochanna heleios'' Ling & Gleeson, 2001 (Northland mudfish) * '' Neochanna rekohua'' (Mitchell, 1995) (Chatham mudfish) Description Mudfishes are small, growing to a maximum of . They have a tubular, highly flexible, scaleless body with rounded fins, well-developed flanges on the caudal peduncle, tubular nostrils, small or absent pelvic fins, and mottled brown colouration. Adults are active at night and are usually found in the benthic zone, while juveniles are active during the day and are found in open water. Habitat Mudfishes are found in wetlands, swamp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neochanna Cleaveri
The Tasmanian mudfish, ''Neochanna cleaveri'', is a small Australian amphidromous fish in the galaxiid family, of the order Osmeriformes. Distribution ''Neochanna cleaveri'' is found in coastal wetlands of south eastern Australia: around Tasmania, Flinders Island in Bass Strait and southern Victoria particularly Wilsons Promontory.R.M. McDowell, 1986. ''Freshwater Fishes of South East Australia'' (Rev Ed) Reed Books Australia, Sydney, pages = 64–65 0-7301-0462-1 Isolated populations occur in the Otways, near Geelong and Melbourne in Victoria, as well as in far eastern South Australia near Naracoorte. The fish's range has been significantly reduced, especially in Victoria, due to destruction of suitable habitat through human activity such as swamp reclamation and drainage. Description Typically galaxiid in form, scaleless, with an elongated, tubular body, and moderately sized mouth, it may be distinguished from other galaxiid species by the small eye and the blunt, r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxiid
The Galaxiidae are a family of mostly small freshwater fish in the Southern Hemisphere. The majority live in Southern Australia or New Zealand, but some are found in South Africa, southern South America, Lord Howe Island, New Caledonia, and the Falkland Islands. One galaxiid species, the common galaxias (''Galaxias maculatus''), is probably the most widely naturally distributed freshwater fish in the Southern Hemisphere. They are coolwater species, found in temperate latitudes, with only one species known from subtropical habitats. Many specialise in living in cold, high-altitude upland and lowland (freshwater ecology), upland rivers, streams, and lakes. Some galaxiids live in fresh water all their lives, but many have a partially marine lifecycle. In these cases, larvae are hatched in a river, but are washed downstream to the ocean, later returning to rivers as juveniles to complete their development to full adulthood. This pattern differs from that of salmon, which only return ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neochanna Burrowsius
The Canterbury mudfish (''Neochanna burrowsius''), also known as the kowaro, is found only on the Canterbury Plains in New Zealand.70% over ten years. Also in 2014 the IUCN rated the Canterbury mudfish as "Critically endangered". The Canterbury mudfish is range restricted and sparse, and its preservation is dependent on conservation efforts. Water abstraction, intensification of agriculture and changes in irrigation systems are main causes of their decline. Conservation efforts A release of Canterbury mudfish has been carried out in a protected wetland near Willowby, south of Ashburton, New Zealand, where it is hoped they will survive and reproduce. In May 2010, 90 young fish were released into Travis Wetland in the city of Christchurch in the hope that they would become established. References External links Image of the holotype specimen held at Museum of New Zealand Te Papa Tongarewa * Canterbury mudfish featured by Alison Ballance on RNZ ''Our Changing World''18 June ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neochanna Diversus
The black mudfish (''Neochanna diversus'') is a fish of the family Galaxiidae, found only in swamps and wetlands in the northern half of the North Island of New Zealand, from Kaitaia in the north to the Mokau River in the south. An 85-90% loss of wetlands has occurred, especially from Waikato and Hauraki Plains. The most significant threat is wetland drainage, and this has slowed so the decline has stabilized; other threats include mosquitofish (which eat juveniles and compete with adults), pollution, sedimentation, and fires. It is considered a local delicacy by the local Maori populace when prepared using ancestral cooking techniques. Its length is up to 12 cm. Efforts by the New Zealand Department of Conservation and regional councils have helped protect and reintroduce the fish. References black mudfish Endemic freshwater fish of New Zealand Fish of the North Island Taxa named by Gerald Stokell black mudfish The black mudfish (''Neochanna diversus'') ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neochanna Heleios
The Northland mudfish (''Neochanna heleios'', heleios meaning marsh dwelling, neochanna meaning compound word of neo for new and channa for anchovy) is a galaxiid of the genus '' Neochanna'', found only in swampy locations west of the Bay of Islands in Northland, New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count .... Its length is up to 134 mm. References * NIWA June 2006 Royal Society of NZ Northland mudfish Endemic freshwater fish of New Zealand Fish of the North Island Northland mudfish {{Osmeriformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neochanna Rekohua
The Chatham mudfish (''Neochanna rekohua'')'','' formerly known as the Chathams galaxias (''Galaxias rekohua''), is a galaxiid fish endemic to two small, peaty lakes in southern Chatham Island, New Zealand. It was discovered in 1994 by C.P. Mitchell, who initially placed it in the genus ''Galaxias,'' and gave it the species name ''rekohua'' after the Moriori word for the Chatham Islands. In 2004, R.M. McDowall reassigned it to '' Neochanna'' based on its external anatomy, behaviour, and skeleton, and this was subsequently supported by a genetic analysis. The Chatham mudfish is the most ''Galaxias''-like of all the mudfishes, with a short body and small pelvic fins, and is closely related to the Canterbury mudfish The Canterbury mudfish (''Neochanna burrowsius''), also known as the kowaro, is found only on the Canterbury Plains in New Zealand.70% over ten years. Also in 2014 the IUCN rated the Canterbury mudfish as "Critically endangered". The Canterbury .... ''Neochanna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neochanna Apoda
The brown mudfish (''Neochanna apoda'') is a galaxiid endemic to New Zealand. The species is found in wetlands in the southwest of the North Island and the northern half of the west coast of the South Island. It commonly grows to 100–130 mm in length, and it can live to at least 7 years. They are named for their brown color. The dorsal and anal fins of the brown mudfish are very long-based, extending close to the caudal fin, nearly joining it. It inhabits shallow swamp-forest wetlands. If the water dries out over summer, it is able to aestivate in damp areas, such as under logs and in root holes, until the water returns. In 2014, the New Zealand Department of Conservation classified the brown mudfish as "At Risk: Declining" with qualifier "C(1/1) >100,000 mature individuals, predicted decline 10–70%". Also in 2014 the IUCN rated the brown mudfish as "Endangered". References * * NIWA Fish AtlaNIWA June 2006 External links TerraNature, Auckland 2010 brown mudf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerald Stokell
Gerald Stokell (20 June 1890 – 10 July 1972) was a New Zealand amateur ichthyologist.Journal of the Royal Society of New Zealanp 324/ref> Early life Stokell was born at Prebbleton, near Christchurch, New Zealand, on 20 June 1890 to Edmund Stokell and Jane (Née Pasche). He lived there for his whole life. He attended Broadfields Primary School, and was a keen trout angler. Interest in freshwater fish A keen angler, Stokell wrote a series of studies on trout in Lake Ellismere. Through this interest in angling, he also came across native fish species, but was unable to identify them due to a lack of published information. From 1938 onwards he began publishing papers on them, describing species and detangling the many names that had accrued. He described 10 species that are still accepted, although others turned out to be junior synonyms. Species described * ''Galaxias paucispondylus'' (1938) alpine galaxias * '' Gobiomorphus breviceps'' (1939) upland bully * '' Galaxias prognathu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish 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 to lur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxias
''Galaxias'' is a genus of small freshwater fish in the family (biology), family Galaxiidae, and are frequently referred to as the galaxiids. These highly adaptable fish are typically found at temperate latitudes across the Southern Hemisphere. Galaxiids are fish scale, scaleless and somewhat tubular in body form, ranging from very slender to quite bulky. They are somewhat torpedo-shaped, with the dorsal fin, dorsal and anal fins positioned close to the tail. They are generally small, with typical adults ranging between in total length, with some stocky species attaining around . The largest, ''Galaxias argenteus'', has been recorded at , although is a more typical adult length. Species The 46 recognized species in this genus are: * ''Galaxias aequipinnis'' Tarmo Ain Raadik, Raadik, 2014 (East Gippsland Galaxias) * ''Galaxias anomalus'' Gerald Stokell, Stokell, 1959 (Roundhead Galaxias) * ''Galaxias arcanus'' Raadik, 2014 (Riffle Galaxias) * ''Galaxias argenteus'' Johann Fri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasmania
) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_date = Colony of Tasmania , established_title2 = Federation , established_date2 = 1 January 1901 , named_for = Abel Tasman , demonym = , capital = Hobart , largest_city = capital , coordinates = , admin_center = 29 local government areas , admin_center_type = Administration , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Günther
Albert Karl Ludwig Gotthilf Günther FRS, also Albert Charles Lewis Gotthilf Günther (3 October 1830 – 1 February 1914), was a German-born British zoologist, ichthyologist, and herpetologist. Günther is ranked the second-most productive reptile taxonomist (after George Albert Boulenger) with more than 340 reptile species described. Early life and career Günther was born in Esslingen in Swabia (Württemberg). His father was a ''Stiftungs-Commissar'' in Esslingen and his mother was Eleonora Nagel. He initially schooled at the Stuttgart Gymnasium. His family wished him to train for the ministry of the Lutheran Church for which he moved to the University of Tübingen. A brother shifted from theology to medicine, and he, too, turned to science and medicine at Tübingen in 1852. His first work was "''Ueber den Puppenzustand eines Distoma''". He graduated in medicine with an M.D. from Tübingen in 1858, the same year in which he published a handbook of zoology for students of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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