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Guyanancistrus Brevispinis
''Guyanancistrus brevispinis'' is a species of catfish in the family Loricariidae. It is a freshwater fish native to South America, where it occurs in the Atlantic coastal drainages of the Guianas, ranging from the Nickerie River basin to the Oyapock basin in French Guiana and Suriname. It has also been reported from Guyana, but this is believed to be a misidentification. The species is considered the most common and abundant member of the genus ''Guyanancistrus'', occurring in rocky streams with flowing water, especially in the vicinity of plunging waters. It is known to coexist with members of the genus ''Lithoxus'' in small forested creeks as well as rapids. The species reaches 14.2 cm (5.6 inches) in standard length. ''Guyanancistrus brevispinis'' appears in the aquarium trade, where it is often referred to either as the shortspined wing pleco or by its associated L-number The L-number system is a semi-scientific classification system of catfish based on photogr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fig 8
The fig is the edible fruit of ''Ficus carica'', a species of small tree in the flowering plant family Moraceae. Native to the Mediterranean and western Asia, it has been cultivated since ancient times and is now widely grown throughout the world, both for its fruit and as an ornamental plant.''The Fig: its History, Culture, and Curing'', Gustavus A. Eisen, Washington, Govt. print. off., 1901 ''Ficus carica'' is the type species of the genus '' Ficus'', containing over 800 tropical and subtropical plant species. A fig plant is a small deciduous tree or large shrub growing up to tall, with smooth white bark. Its large leaves have three to five deep lobes. Its fruit (referred to as syconium, a type of multiple fruit) is tear-shaped, long, with a green skin that may ripen toward purple or brown, and sweet soft reddish flesh containing numerous crunchy seeds. The milky sap of the green parts is an irritant to human skin. In the Northern Hemisphere, fresh figs are in season ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guyana
Guyana ( or ), officially the Cooperative Republic of Guyana, is a country on the northern mainland of South America. Guyana is an indigenous word which means "Land of Many Waters". The capital city is Georgetown. Guyana is bordered by the Atlantic Ocean to the north, Brazil to the south and southwest, Venezuela to the west, and Suriname to the east. With , Guyana is the third-smallest sovereign state by area in mainland South America after Uruguay and Suriname, and is the second-least populous sovereign state in South America after Suriname; it is also one of the least densely populated countries on Earth. It has a wide variety of natural habitats and very high biodiversity. The region known as "the Guianas" consists of the large shield landmass north of the Amazon River and east of the Orinoco River known as the "land of many waters". Nine indigenous tribes reside in Guyana: the Wai Wai, Macushi, Patamona, Lokono, Kalina, Wapishana, Pemon, Akawaio and Warao. Histo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catfish Of South America
Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, the Mekong giant catfish from Southeast Asia, the wels catfish of Eurasia, and the piraíba of South America, to detritivores (species that eat dead material on the bottom), and even to a tiny parasitic species commonly called the candiru, ''Vandellia cirrhosa''. Neither the armour-plated types nor the naked types have scales. Despite their name, not all catfish have prominent barbels or "whiskers". Members of the Siluriformes order are defined by features of the skull and swimbladder. Catfish are of considerable commercial importance; many of the larger species are farmed or fished for food. Many of the smaller species, particularly the genus ''Corydoras'', are important in the aquarium hobby. Many catfish are nocturnal, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1983
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. Most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypostominae
The Hypostominae are a subfamily of catfishes of the family Loricariidae. Most members are restricted to tropical and subtropical South America, but there are also several species (in genera ''Ancistrus'', '' Chaetostoma'', ''Lasiancistrus'', '' Leptoancistrus'' and ''Hemiancistrus'') in southern Central America. ''Hypostomus plecostomus'', which is popular in the aquarium trade, has been introduced to several regions far from its native range. Studies conducted with representatives of some genera of Hypostominae showed, within this group, the diploid number ranges from 2n = 52 to 2n = 80. However, the supposed wide karyotypic diversity the family Loricariidae or the subfamily Hypostominae would present is almost exclusively restricted to the genus ''Hypostomus'', and the species from the other genera had a conserved diploid number. Taxonomy *Ancistrini (sometimes considered a separate subfamily as Ancistrinae) ** '' Acanthicus'' ** ''Ancistrus'' ** ''Andeancistrus'' ** '' Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
L-number
The L-number system is a semi-scientific classification system of catfish based on photographs of shipments of tropical catfish of the family Loricariidae published by the German aquarium magazine DATZ (Die Aquarien- und Terrarienzeitschrift (The Aquarium and Terrarium Magazine)). The first L-number was published in 1988. An L-number is not a formal scientific designation, but it allows people to identify various loricariid catfish by a "common name" before the fish is officially described. When a loricariid receives an official scientific name, the L-number (or numbers) is retired; best practice is then to use the scientific name. A specific L-number classification does not guarantee a discrete species, multiple L numbers have been given to different populations of the same species. To add to the confusion, sometimes a single L-number may be used for multiple species. Additionally the aquarium magazine 'Das Aquarium' introduced a similar system using the prefix 'LDA'. L-numbe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Measurement
Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. Simply put, this measurement excludes the length of the caudal (tail) fin. * Total length (TL) is the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. It is a straight-line measure, not measured over the curve of the body. Standard length measurements are used with Teleostei (most bony fish), while total length measurements are used with Myxini (hagfish), Petromyzontiformes (lampreys), and (usually) Elasmobranchii (sharks and rays), as well as some other fishes. Total length meas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapids
Rapids are sections of a river where the river bed has a relatively steep gradient, causing an increase in water velocity and turbulence. Rapids are hydrological features between a ''run'' (a smoothly flowing part of a stream) and a ''cascade''. Rapids are characterized by the river becoming shallower with some rocks exposed above the flow surface. As flowing water splashes over and around the rocks, air bubbles become mixed in with it and portions of the surface acquire a white color, forming what is called "whitewater". Rapids occur where the bed material is highly resistant to the erosive power of the stream in comparison with the bed downstream of the rapids. Very young streams flowing across solid rock may be rapids for much of their length. Rapids cause water aeration of the stream or river, resulting in better water quality. Rapids are categorized in classes, generally running from I to VI. A Class 5 rapid may be categorized as Class 5.1-5.9. While Class I rapids are eas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithoxus
''Lithoxus'' is a genus of suckermouth armored catfishes native to tropical South America. Taxonomy ''Lithoxus'' is supported as a monophyletic sister to '' Exastilithoxus''. Together, these two genera form a well-supported clade. Species There are currently eight recognized species in this genus: * '' Lithoxus boujardi'' So. Muller & Isbrücker, 1993 * '' Lithoxus bovallii'' (Regan, 1906) * '' Lithoxus jantjae'' Lujan, 2008 * '' Lithoxus lithoides'' C. H. Eigenmann, 1912 * '' Lithoxus pallidimaculatus'' Boeseman, 1982 * '' Lithoxus planquettei'' Boeseman, 1982 * '' Lithoxus stocki'' Nijssen & Isbrücker, 1990 * '' Lithoxus surinamensis'' Boeseman, 1982 Distribution ''Lithoxus'' range from the Oyapock drainage along the border between Brazil and French Guiana, through Suriname west to the Tacutu River along the border between Guyana and Brazil and south to the Uatama and Trombetas rivers of Brazil. Description ''Lithoxus'' contains some of the most dorsoventra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guyanancistrus
''Guyanancistrus'' is a genus of suckermouth armored catfishes. Species There are currently 8 recognized species in this genus: * '' Guyanancistrus brevispinis'' ( Heitmans, Nijssen & Isbrücker, 1983) * ''Guyanancistrus brownsbergensis'' Mol, Fisch-Muller & Covain, 2018 * ''Guyanancistrus longispinis'' ( Heitmans, Nijssen & Isbrücker, 1983) * '' Guyanancistrus megastictus'' Fisch-Muller, Mol & Covain, 2018 * ''Guyanancistrus nassauensis'' Mol, Fisch-Muller & Covain, 2018 * '' Guyanancistrus niger'' (Norman Norman or Normans may refer to: Ethnic and cultural identity * The Normans, a people partly descended from Norse Vikings who settled in the territory of Normandy in France in the 10th and 11th centuries ** People or things connected with the Norm ..., 1926) * '' Guyanancistrus tenuis'' Fisch-Muller, Mol & Covain, 2018 * '' Guyanancistrus teretirostris'' Fisch-Muller, Mol & Covain, 2018 References Fish of South America Hypostominae Catfish genera [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suriname
Suriname (; srn, Sranankondre or ), officially the Republic of Suriname ( nl, Republiek Suriname , srn, Ripolik fu Sranan), is a country on the northeastern Atlantic coast of South America. It is bordered by the Atlantic Ocean to the north, French Guiana to the east, Guyana to the west, and Brazil to the south. At just under , it is the smallest sovereign state in South America. It has a population of approximately , dominated by descendants from the slaves and labourers brought in from Africa and Asia by the Dutch Empire and Republic. Most of the people live by the country's (north) coast, in and around its capital and largest city, Paramaribo. It is also List of countries and dependencies by population density, one of the least densely populated countries on Earth. Situated slightly north of the equator, Suriname is a tropical country dominated by rainforests. Its extensive tree cover is vital to the country's efforts to Climate change in Suriname, mitigate climate ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
