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Loaches
Loaches are fish of the superfamily Cobitoidea. They are freshwater, benthic (bottom-dwelling) fish found in rivers and creeks throughout Eurasia and northern Africa. Loaches are among the most diverse groups of fish; the 1249 known species of Cobitoidea comprise about 107 genera divided among 9 families. Etymology The name Cobitoidea comes from the type genus, ''Cobitis'', described by Carl Linnaeus in his landmark 1758 10th edition of ''Systema Naturae''. However, its origin predates modern zoological nomenclature and derives from a term used by Aristotle to refer to "small fishes that bury... like the gudgeon." Description Loaches display a wide variety of morphologies, making the group difficult to characterize as a whole using external traits. They range in adult length from the 23 mm (1 in) miniature eel-loach, ''Pangio longimanus'', to the 50 cm (20 in) imperial flower loach, ''Leptobotia elongata'', with the latter weighing up to 3 kg ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptobotia Elongata
''Leptobotia elongata'', the imperial flower loach, elongate loach or royal clown loach, is a species of botiid fish found in flowing water in the upper and middle Yangtze basin in China.SeriouslyFishLeptobotia elongata Retrieved 10 March 2017.Loaches OnlineLeptobotia elongata Retrieved 10 March 2017. It is the largest species in the family, reaching up to in length and in weight.Li, L.; Q. Wei Wei; J. Ming Wu; H. Zhang; Y. Liu; & X. Xie (2015). Diet of Leptobotia elongata revealed by stomach content analysis and inferred from stable isotope signatures. Environ Biol Fish 98: 1965–1978. . Formerly common, the numbers of this vulnerable species have declined because of overfishing, dams (limiting its breeding migration), habitat loss and pollution. The species is bred in captivity and a stocking project has been in place since 2010.Yang, K.; Zeng, R.; Gan, W.; Deng, L.; and Song, Z. (2016). Otolith fluorescent and thermal marking of elongate loach (Leptobotia elongata) at earl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cypriniformes
Cypriniformes is an order of ray-finned fish, including the carps, minnows, loaches, and relatives. Cypriniformes is an Order within the Superorder Ostariophysi consisting of "Carp-like" Ostariophysins. This order contains 11-12 families, although some authorities have designated as many as 23, over 400 genera, and more than 4,250 species, with new species being described every few months or so, and new genera being recognized frequently.Eschmeyer, W.N., Fong, J.D. (2015Species by family/subfamilyin the Catalog of Fishes, California Academy of Sciences (retrieved 2 July 2015) They are most diverse in southeastern Asia, and are entirely absent from Australia and South America.Nelson (2006) At 112 years old, the longest-lived cypriniform fish documented is the bigmouth buffalo. Their closest living relatives are the Characiformes ( characins and allies), the Gymnotiformes (electric eel and American knifefishes), and the Siluriformes (catfishes). Description Like other or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cobitidae
Cobitidae, also known as the True loaches, is a family of Old World freshwater fish. They occur throughout Eurasia and in Morocco, and inhabit riverine ecosystems. Today, most "loaches" are placed in other families (see below). The family includes about 260 described species. New species are being described regularly.Perdices, A., Bohlen, J., Šlechtová, V. & Doadrio, I. (2016): Molecular Evidence for Multiple Origins of the European Spined Loaches (Teleostei, Cobitidae). ''PLoS ONE, 11 (1): e0144628.'' Description and ecology The body forms of the Cobitidae tend to be vermiform – worm-shaped, long and thin. Most true loaches do not have true scales, and like many other Cypriniformes or catfishes, they have barbels at their mouths (usually three to six pairs). Some other traits typically found in this family are a small bottom-facing mouth suited to their scavenging benthic lifestyle, an erectile spine below the eye, and a single row of pharyngeal (throat) teeth. True ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nemacheilidae
The Nemacheilidae, or stone loaches, are a family of cypriniform fishes that inhabit stream environments, mostly in Eurasia, with one genus, ''Afronemacheilus'' found in Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area .... The family includes about 790 species. Genera The following are the described genera of the family: References Taxa named by Charles Tate Regan {{Nemacheilidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristotle
Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Peripatetic school of philosophy within the Lyceum and the wider Aristotelian tradition. His writings cover many subjects including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theatre, music, rhetoric, psychology, linguistics, economics, politics, meteorology, geology, and government. Aristotle provided a complex synthesis of the various philosophies existing prior to him. It was above all from his teachings that the West inherited its intellectual lexicon, as well as problems and methods of inquiry. As a result, his philosophy has exerted a unique influence on almost every form of knowledge in the West and it continues to be a subject of contemporary philosophical discussion. Little is known about his life. Aristotle was born in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gudgeon (fish)
Gudgeon is the common name for a number of small freshwater fish of the families Butidae, Cyprinidae, Eleotridae or Ptereleotridae. Most gudgeons are elongate, bottom-dwelling fish, many of which live in rapids and other fast moving water. Families * Cyprinidae – Various cyprinid gudgeons, members of the subfamily Gobioninae (e.g. genera ''Gobio'', '' Romanogobio''), are found in lakes and rivers throughout Europe. Most commonly gudgeon refers to the species ''Gobio gobio''. This is a rheophilic and schooling species that occurs both in river and lake habitats across continental Europe and the United Kingdom. ''G. gobio'' feeds on a variety of invertebrates. This gudgeon is an easy fish to catch for beginners. A British rod caught a record 5 ounce gudgeon in 1990 on the River Nadder, Wiltshire. * Eleotridae – Known commonly as gudgeons, many species in the family Eleotridae are also called sleeper gobies. Unlike gobies, Eleotridae gudgeons have paired ventral fins rather t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acantopsis Rungthipae
''Acantopsis'' is a genus of freshwater fishes, commonly known as horseface loaches or banana-root fishes, in the family Cobitidae.Boyd, D. A., Nithirojpakdee, P., Deein, G., Vidthayanon, C., Grudpan, C., Tangjitjaroen, W., Pfeiffer, J. M., Randall, Z. S., Srisombat, T. & Page, L. M. (2017)Revision of the horseface loaches (Cobitidae, Acantopsis), with descriptions of three new species from Southeast Asia.Zootaxa, 4341(2), 151-192. Fishes of the genus ''Acantopsis'' inhabit sandy riverbeds throughout Southeast Asia. The common horseface loach, '' A. rungthipae'', is popular in the aquarium trade. Species There are currently seven recognized species in this genus:Fricke, R., Eschmeyer, W. N. & R. van der Laan (eds) 2018. CATALOG OF FISHES: GENERA, SPECIES, REFERENCES. (http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp). Electronic version accessed 28 Sep 2018. * '' Acantopsis dialuzona'' van Hasselt, 1823 (Piglet horseface loach) * '' Acantopsis sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pangio Longimanus
''Pangio'' is a genus of small Asian freshwater fish in the true loach family Cobitidae. In earlier taxonomic schemes it was known as ''Acanthophthalmus''. The "kuhli loach" is well-known in the aquarium trade and commonly identified as ''P. kuhlii'', but most individuals actually appear to be ''P. semicincta''. The type species is ''Cobitis cinnamomea'' McClelland 1839, now known as ''Pangio pangia''. These fish are best represented in Southeast Asia where all but five of the species live, including the Greater Sunda Islands with sixteen species. The five species found outside Southeast Asia are from India and Myanmar. They inhabit a wide range of mostly calm waters such as streams, swamps (often peat swamps) and backwaters, but there are also species in fast-flowing waters, and one, ''P. bhujia'', lives underground. Species There are currently 33 recognized species in this genus: * ''Pangio agma'' ( M. E. Burridge, 1992) * ''Pangio alcoides'' Kottelat & K. K. P. Lim, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbel (anatomy)
In fish anatomy and turtle anatomy, a barbel is a slender, whiskerlike sensory organ near the mouth. Fish that have barbels include the catfish, the carp, the goatfish, the hagfish, the sturgeon, the zebrafish, the black dragonfish and some species of shark such as the sawshark. Barbels house the taste buds of such fish and are used to search for food in murky water. The word "barbel" comes from the Middle Latin ''barbula'', for "little beard." Barbels are sometimes erroneously referred to as '' barbs'', which are found in bird feathers for flight. Barbels may be located in a variety of locations on the head of a fish. "Maxillary barbels" refers to barbels on either side of the mouth. Barbels may also be nasal, extending from the nostrils. Also, barbels are often mandibular or mental, being located on the chin. In fish, barbels can take the form of small, fleshy protrusions or long, cylindrical shaped extensions of the head of a fish. The cylindrical barbel shapes are bui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Scale
A fish scale is a small rigid plate that grows out of the skin of a fish. The skin of most jawed fishes is covered with these protective scales, which can also provide effective camouflage through the use of reflection and colouration, as well as possible hydrodynamic advantages. The term ''scale'' derives from the Old French , meaning a shell pod or husk. Scales vary enormously in size, shape, structure, and extent, ranging from strong and rigid armour plates in fishes such as shrimpfishes and boxfishes, to microscopic or absent in fishes such as eels and anglerfishes. The morphology of a scale can be used to identify the species of fish it came from. Scales originated within the jawless ostracoderms, ancestors to all jawed fishes today. Most bony fishes are covered with the cycloid scales of salmon and carp, or the ctenoid scales of perch, or the ganoid scales of sturgeons and gars. Cartilaginous fishes (sharks and rays) are covered with placoid scales. Some species are c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
