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Galaxias Mcdowalli
''Galaxias mcdowalli'', McDowall's galaxias, is a galaxiid of the genus ''Galaxias'', a member of the Mountain Galaxias species complex group of freshwater fish, found in Australia. Named in honor of Robert (Bob) Montgomery McDowall (1939-2011). Description Similar to other members of the species complex with a long, tubular body; flattened on the back in front of the pelvic fins. Commonly in length to a maximum recorded size of . Viewed from the side the back and belly surfaces are evenly arched from the snout to the tail, with the back slightly more so. Medium sized head, wider than deep with a slight wedge shape from the side view. Fins somewhat fleshy at their bases, moderately long and rounded. Anal and dorsal fin bases roughly equal and moderately long. Pectoral fins relatively short and paddle shaped and low on the body. Pelvic fins also short and positioned about the mid point of the body. Tail of medium length with moderately well developed flanges along the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Society For Fish Biology
The Australian Society for Fish Biology (ASFB) is a professional organisation of fish and fisheries researchers. Founded in 1971, the society describes itself as a "professional, independent, non-profit, non-commercial and non-aligned organisation.""About" , Australian Society for Fish Biology, official website. Accessed 13 November 2016. The Australian Society for Fish Biology holds annual conferences for its members, sometimes in partnership with related organisations such as the Oceania Chondrichthyan SocietyRhiannon Shine (2016 "Sharks smarter than we think, have great awareness of surroundings, experts say" [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarmo Ain Raadik
Tarmo may refer to: * Tarmo (given name), Estonian and Finnish masculine given name * Tarmo, Estonian and Finnish family name ** Ruut Tarmo Ruut Tarmo (26 April 1896 – 28 January 1967) was an Estonian stage and film actor and stage director whose career spanned more than five decades. Early life Ruut Tarmo was born Harald Rudolf Klein in Tartu in 1896 to Julius Klein and Sohvi Kle ... (1896–1967), Estonian stage and film actor, and stage director * , a Finnish steam-powered icebreaker * , a Finnish ''Taisto''-class motor torpedo boat sunk on 21 June 1944 * Hämeenlinnan Tarmo, a Finnish sports club {{Disambiguation, ship ... [...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] |
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 comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...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] |
Mountain Galaxias
''Galaxias olidus'', the mountain galaxias, is a species of freshwater galaxiid fish widely found in southeastern Australia. Description As for other members of the species complex, although ''Galaxias olidus'' exhibits a greater range of characteristics than other members of the group. The fish has a long tubular body, commonly to . The body's upper and lower surfaces are gently and evenly curved with the upper surface partly flattened before the pelvic fins. Head medium size and noticeably wider than deep and slightly wedge-shaped from the side. Mouth of medium length with the tip of the upper lip usually level with the middle of the eye then extending down and back towards the belly to a point about even with the middle of the eye. Mountain galaxias are very variable in base colour and markings throughout their range, but within individual populations, less so. Body mostly tan, light brown to brown or olive, occasionally orange-brown. Base colour extends over head and s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Complex
In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each other, further blurring any distinctions. Terms that are sometimes used synonymously but have more precise meanings are cryptic species for two or more species hidden under one species name, sibling species for two (or more) species that are each other's closest relative, and species flock for a group of closely related species that live in the same habitat. As informal taxonomic ranks, species group, species aggregate, macrospecies, and superspecies are also in use. Two or more taxa that were once considered conspecific (of the same species) may later be subdivided into infraspecific taxa (taxa within a species, such as bacterial strains or plant varieties), that is complex but it is not a species complex. A species complex is in most cas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bob McDowall
Robert (Bob) Montgomery McDowall (15 September 1939 – 20 February 2011) was one of New Zealand's most prominent freshwater ichthyologists. Biography McDowall was born on 15 September 1939, the son of dairy scientist Frederick Henry McDowall and entomologist Grace Edith Wall. He attended Palmerston North Boys' High School and went on to study for a BSc at Victoria University in 1958. Despite only receiving a C pass in Zoology, he was accepted into the graduate program where he completed an MSc thesis on the biology of the redfin bully. In 1963 he joined the Fisheries Division of the Marine Department of the Department of Scientific and Industrial Research. At that time, the main laboratories of the Marine Department were housed on the ground floor of the old Wellington City morgue - which McDowall described as an "unhappy and "exceedingly primitive' place with inadequate power and heating. McDowall's dissatisfaction at the Fisheries Division reached Barry Fell, formerly a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudal Peduncle
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 lu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxias Mcdowalli Distribution
''Galaxias'' is a genus of small freshwater fish in the 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 scaleless and somewhat tubular in body form, ranging from very slender to quite bulky. They are somewhat torpedo-shaped, with the 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'' Raadik, 2014 (East Gippsland Galaxias) * '' Galaxias anomalus'' Stokell, 1959 (Roundhead Galaxias) * '' Galaxias arcanus'' Raadik, 2014 (Riffle Galaxias) * ''Galaxias argenteus'' Gmelin, 1789 (Giant Kōkopu) * '' Galaxias auratus'' Johnston, 1883 (Golden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snowy River
The Snowy River is a major river in south-eastern Australia. It originates on the slopes of Mount Kosciuszko, Australia's highest mainland peak, draining the eastern slopes of the Snowy Mountains in New South Wales, before flowing through the Alpine National Park and the Snowy River National Park in Victoria and emptying into Bass Strait. While the river's course and surroundings have remained almost entirely unchanged, the majority of it being protected by the Snowy River National Park, its flow was drastically reduced in the mid 20th century, to less than 1% (as measured at Jindabyne), after the construction of four large dams ( Guthega, Island Bend, Eucumbene, and Jindabyne) and many smaller diversion structures in its headwaters in New South Wales, as part of the Snowy Mountains Scheme. The river has been immortalised in cultural folklore through the poem ''The Man from Snowy River'', written by 'Banjo' Paterson in 1890, which formed the basis of many subsequent works ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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