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Macquaria
''Macquaria'' is a genus of medium-sized, predatory temperate perches endemism, endemic to Australia. They are found in rivers of the eastern part of the continent. Species The currently recognized species in this genus are: * ''Macquaria ambigua'' (John Richardson (naturalist), J. Richardson, 1845), commonly known as golden perch or "yellowbelly" * ''Macquaria australasica'' (Georges Cuvier, G. Cuvier, 1830), commonly known as Macquarie perch One fossil species is known in †''Macquaria avus'' (Arthur Smith Woodward, Woodward, 1902) (=''Ctenolates avus'' Woodward, 1902) from Miocene-aged freshwater deposits near Nimbin, New South Wales, Nimbin. Many fossil remains assigned to this genus are known from the Eocene to the Miocene of Australia. However, it is uncertain whether they belong to this genus or to ''Percalates'' (formerly subsumed within it). Taxonomy Previously, the two catadromous species ''Macquaria colonorum'' and ''Macquaria novemaculeata, M. novemaculeata'' were al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macquaria Novemaculeata
The Australian bass (''Percalates novemaculeata'') is a small-to-medium-sized species of primarily freshwater fish, freshwater (but catadromous, estuarine spawning) ray-finned fish found in coastal rivers and streams along the eastern states of Australia, east coast of Australia. A member of the genus ''Percalates'' from the order Centrarchiformes, the Australian bass is an important member of the native fish assemblages found in east coast river systems. It is a native predatory fishHarris JH (1985a). Diet of Australian bass, ''Macquaria novemaculeata'' (Perciformes: Percichthyidae) in the Sydney Basin. ''Australian Journal of Marine and Freshwater Research'' 36: 219–234. and an extremely popular game fish species among angling, anglers.Bethune J (1993). 'Bethune on Bass'. Simon & Schuster Australia, East Roseville, NSW, Australia. 93 pages.Lewers D (1995). 'Fabulous bass and how to catch them'. Horwitz, St Leonards, NSW, Australia. 192 pages. The species was simply called per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macquarie Perch
The Macquarie perch (''Macquaria australasica'') is an Australian native freshwater fish of the Murray-Darling river system. It is a member of the family Percichthyidae and is closely related to the golden perch (''Macquaria ambigua''). The Macquarie perch derives its scientific name from the Macquarie River where the first scientifically described specimen was collected (''Macquaria'') and a derivation of the Latin word for "southern" (''australasica''). Description and diet Macquarie perch are medium-sized fish, commonly 30–40 cm and 1.0–1.5 kg. Maximum size is about 2.5 kg and 50 cm. The body is elongated, deep, and laterally compressed. The caudal fin, anal fin and soft dorsal fin are rounded. Spiny dorsal fin medium height and strong. Mouth and eyes are relatively small. Colouration can vary from tan to (more commonly) dark purplish-grey to black. The irises of the eyes are distinctly silver. Macquarie perch are a relatively placid nativ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macquaria Ambigua
The golden perch (''Macquaria ambigua'') is a medium-sized, yellow or gold-coloured species of Australian freshwater fish found primarily in the Murray-Darling River system, though a subspecies is found in the Lake Eyre-Cooper Creek system, and another subspecies, suspected to be ancestral to all other populations, is found in the Fitzroy River system in Queensland. Other common names for golden perch are "goldens", “yellowbelly” and "callop", the last generally used only in South Australia. Golden perch are not a true perch, which belongs to the genus ''Perca'' from the family Percidae, but a member of the Percichthyidae (temperate perch) family. This relatively widespread and widely stocked species is an important angling sport fish in Australia. Description Golden perch are medium-sized fish, commonly 30–40 cm and 1–2 kg in rivers. Fish from rivers are smaller and somewhat streamlined — fish in man-made impoundments are much deeper-bodied and show mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macquaria Australasica
The Macquarie perch (''Macquaria australasica'') is an Australian native freshwater fish of the Murray-Darling river system. It is a member of the family Percichthyidae and is closely related to the golden perch (''Macquaria ambigua''). The Macquarie perch derives its scientific name from the Macquarie River where the first scientifically described specimen was collected (''Macquaria'') and a derivation of the Latin word for "southern" (''australasica''). Description and diet Macquarie perch are medium-sized fish, commonly 30–40 cm and 1.0–1.5 kg. Maximum size is about 2.5 kg and 50 cm. The body is elongated, deep, and laterally compressed. The caudal fin, anal fin and soft dorsal fin are rounded. Spiny dorsal fin medium height and strong. Mouth and eyes are relatively small. Colouration can vary from tan to (more commonly) dark purplish-grey to black. The irises of the eyes are distinctly silver. Macquarie perch are a relatively placid nativ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macquaria
''Macquaria'' is a genus of medium-sized, predatory temperate perches endemism, endemic to Australia. They are found in rivers of the eastern part of the continent. Species The currently recognized species in this genus are: * ''Macquaria ambigua'' (John Richardson (naturalist), J. Richardson, 1845), commonly known as golden perch or "yellowbelly" * ''Macquaria australasica'' (Georges Cuvier, G. Cuvier, 1830), commonly known as Macquarie perch One fossil species is known in †''Macquaria avus'' (Arthur Smith Woodward, Woodward, 1902) (=''Ctenolates avus'' Woodward, 1902) from Miocene-aged freshwater deposits near Nimbin, New South Wales, Nimbin. Many fossil remains assigned to this genus are known from the Eocene to the Miocene of Australia. However, it is uncertain whether they belong to this genus or to ''Percalates'' (formerly subsumed within it). Taxonomy Previously, the two catadromous species ''Macquaria colonorum'' and ''Macquaria novemaculeata, M. novemaculeata'' were al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macquaria Avus
''Macquaria'' is a genus of medium-sized, predatory temperate perches endemic to Australia. They are found in rivers of the eastern part of the continent. Species The currently recognized species in this genus are: * ''Macquaria ambigua'' ( J. Richardson, 1845), commonly known as golden perch or "yellowbelly" * ''Macquaria australasica'' ( G. Cuvier, 1830), commonly known as Macquarie perch One fossil species is known in †'' Macquaria avus'' ( Woodward, 1902) (=''Ctenolates avus'' Woodward, 1902) from Miocene-aged freshwater deposits near Nimbin. Many fossil remains assigned to this genus are known from the Eocene to the Miocene of Australia. However, it is uncertain whether they belong to this genus or to '' Percalates'' (formerly subsumed within it). Taxonomy Previously, the two catadromous species '' Macquaria colonorum'' and '' M. novemaculeata'' were also placed in this genus. However, more recent phylogenetic studies have found they are not closely related to the two oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macquaria Colonorum
The estuary perch (''Percalates colonorum'') is a species of ray-finned fish endemic to south-eastern Australia, where it prefers brackish waters such as the tidal reaches of coastal lakes, rivers, and streams. Appearance It is very similar to and very closely related to its sister species, the Australian bass, ''Percalates novemaculeata'', differing in having a slightly more "scooped" forehead and reaching a larger length of . The species also differ in that Australian bass generally inhabit freshwater reaches during the non-spawning months, while estuary perch generally inhabit reaches subject to some tidal movement. Most individuals only reach around . The greatest recorded weight for a specimen of this species is , there is very little evidence for this, most people assume it was a typo i.e. it was 10 lb and not 10 kg. Reproduction Estuary perch breed in winter at the same time as Australian bass, and are similarly sexually dimorphic, with females larger than male ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percalatidae
''Percalates'' (from '' Perca'' + ''Lates'') is a genus of ray-finned fish native to both estuarine and freshwater habitats of southeastern Australia. They are the only members of the suborder Percalatoidei, and of their own undescribed family ('Percalatidae'). Description It contains two species, both of which were previously placed in the temperate perch genus ''Macquaria''. However, more recent phylogenetic studies have found these two species to be the most basal members of the order Centrarchiformes, and thus more distantly related to the temperate perches than previously thought. The following species are known: * '' Percalates colonorum'' ( Günther, 1863) - estuary perch * ''Percalates novemaculeatus'' ( Steindachner, 1866) - Australian bass Well-preserved fossil specimens of the species †'' Percalates antiquus'' Hills, 1934 (=''Macquaria antiquua'') have been recovered from the Early Eocene-aged Redbank Plains Formation of Queensland, Australia. Partial fossil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temperate Perch
Percichthyidae, the temperate perches, are a family of freshwater ray-finned fish found in Australia and southern South America. Formerly placed in the order Perciformes, they are now placed in the order Centrarchiformes. The name Percichthyidae derives from the Latin ''perca'' for perch and Ancient Greek ἰχθύς, ''ichthys'' for fish. Evolution Potential percichthyid fossil remains are known from the Early Paleocene of the El Molino Formation of Bolivia; these remains have been described as resembling those of the fossil '' Percichthys hondoensis'' from the Eocene of Argentina. One articulated specimen is known from the Paleocene portion of the formation, but other remains are known from the Maastrichtian beds of the formation, indicating that percichthyids could have potential Cretaceous origins. However, the condition of this material is unclear. Another fossil percichthyid, '' Percichthys lonquimayiensis'' from Chile, was initially dated to the Paleocene, but further ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percalates
''Percalates'' (from '' Perca'' + ''Lates'') is a genus of ray-finned fish native to both estuarine and freshwater habitats of southeastern Australia. They are the only members of the suborder Percalatoidei, and of their own undescribed family ('Percalatidae'). Description It contains two species, both of which were previously placed in the temperate perch genus ''Macquaria''. However, more recent phylogenetic studies have found these two species to be the most basal members of the order Centrarchiformes, and thus more distantly related to the temperate perches than previously thought. The following species are known: * '' Percalates colonorum'' ( Günther, 1863) - estuary perch * ''Percalates novemaculeatus'' ( Steindachner, 1866) - Australian bass Well-preserved fossil specimens of the species †'' Percalates antiquus'' Hills, 1934 (=''Macquaria antiquua'') have been recovered from the Early Eocene-aged Redbank Plains Formation of Queensland, Australia. Partial fossil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypy
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. Theoretical implications Monotypic taxa present several important theoretical challenges in biological classification. One key issue is known as "Gregg's Paradox": if a single species is the only member of multiple hierarchical levels (for example, being the only species in its genus, which is the only genus in its family), then each level needs a distinct definition to maintain logical structure. Otherwise, the different taxonomic ranks become effectively identical, which creates problems for organizing biological diversity in a hierarchical system. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
