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Pseudoqolus
''Pseudoqolus koko'' is a species of catfish in the family Loricariidae and the only species in the genus ''Pseudoqolus''. It is a freshwater fish native to South America, where it occurs in the Maroni basin. It is usually found on or near stony substrates in the main river channel at a depth of around 2 m (6.6 ft). The species has been collected alongside multiple other loricariid species, including '' Hemiancistrus medians'', '' Peckoltia otali'', ''Pseudancistrus barbatus'', '' Harttia guianensis'', '' Loricaria cataphracta'', and '' Rineloricaria stewarti''. It is noted that the gut contents of one specimen of this species contained primarily spicules and sponge fragments, indicating that it may feed on freshwater sponges. The species reaches 9 cm (3.5 inches) SL. ''Pseudoqolus koko'' was originally described as a member of the genus '' Panaqolus'' (a genus which is sometimes thought to be a subgenus of ''Panaque'') in 2012, although it was reclassified as a member ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panaqolus
''Panaqolus'' is a genus of small catfish in the family Loricariidae native to rivers in tropical South America. Its members were formerly thought to belong to a clade of small-sized species in the genus '' Panaque'', until this genus was separated from ''Panaque'' in 2001. At times it has been considered a subgenus of ''Panaque'', and the validity of the genus has been disputed by various authors and sources. '' Pseudoqolus koko'' was formerly considered to be a member of this genus, although it was reclassified as a member of the currently monotypic genus ''Pseudoqolus'' by Nathan K. Lujan, Christian A. Cramer, Raphael Covain, Sonia Fisch-Muller, and Hernán López-Fernández following a 2017 molecular phylogenetic analysis.Lujan, N. K., Cramer, C. A., Covain, R., Fisch-Muller, S., & López-Fernández, H. (2017). Multilocus molecular phylogeny of the ornamental wood-eating catfishes (Siluriformes, Loricariidae, Panaqolus and Panaque) reveals undescribed diversity and parapatric c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancistrini
Ancistrini is a tribe of catfishes of the family Loricariidae. Most are restricted to tropical and subtropical South America, but there are also several genus ('' Ancistrus'', '' Chaetostoma'', '' Hemiancistrus'' and '' Lasiancistrus'') in southern Central America. Taxonomy Ancistrini have previously been considered a loricariid subfamily. However, the subfamily Hypostominae would be paraphyletic if Ancistrinae continued to be recognized. To continue recognizing the monophyly of this group while returning it to Hypostominae, Hypostominae was broken into several tribes. Pterygoplichthyini is sister to the tribe Ancistrini, which shares the derived presence of an evertible patch of plates on the cheek. Description Most Ancistrini species (except for some '' Pseudancistrus'' and '' Spectracanthicus'') can be separated from all other loricariids except the Pterygoplichthyini by the presence of evertible cheek plates with hypertrophied odontode Odontodes, or dermal teeth, are hard ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
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. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists 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. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rineloricaria Stewarti
''Rineloricaria stewarti'', sometimes known as Stewart's whiptail catfish, is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the coastal rivers of the Guianas, being known from French Guiana, Guyana, and Suriname. It is typically seen in moderately sunlit forest creeks with a depth of 10 to 60 cm (3.9 to 23.6 inches), clear, fast-moving water, and a substrate composed of rocks and sand. It is known to occur alongside the species '' Corydoras guianensis'' and '' Moenkhausia oligolepis'', as well as members of the genus '' Phenacogaster''. Mature male individuals of ''Rineloricaria stewarti'' are known to develop odontodes on both sides of the head and towards the back of the interorbitals. The species reaches 10 cm (3.9 inches) in standard length Fish measurement is the measuring of individual fish and various parts of fish anatomy, their anatomies, for data used in many areas of ichthyology, including Taxonomy (biology) ... [...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. Catfish are named for their prominent barbels, which resemble a cat's whiskers, though not all catfish have prominent barbels or "whiskers", with some seemingly not having them. Siluriformes as a whole are scale-less, with neither the armour-plated nor the naked species having scales. This order of fish are defined by features of the skull and swimbladder. 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 detritivorous and scavenging bottom feeders, down to tiny ectoparasitic species known as the candirus. In the Southern United States, catfish species may be known by a variety of slang names, such as "mud cat", "polliwogs", or "chuckleheads". These nicknames are not standardized, so one area may call a bullhead catfish by the nic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Taxon
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 Genus, 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 o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panaque
The genus ''Panaque'' contains a small number of small to medium-sized South American Loricariidae, suckermouth armoured catfishes that are notable for being among the very few vertebrates that Xylophagy, feed extensively on wood. In addition, algae and aufwuchs are an important part of the diet, and they use their rasping teeth to scrape this from rocks. These fish are also popular aquarium fish, where the sound of scraping as these fish forage for food is easily audible. Taxonomy ''Scobinancistrus'' and ''Panaqolus'' are sometimes considered to be subgenera of this genus. Species There are currently seven recognized species in this genus: * ''Panaque armbrusteri'' * ''Panaque bathyphilus'' * ''Panaque cochliodon'' * ''Panaque nigrolineatus'' (Royal panaque) * ''Panaque schaeferi'' * ''Panaque suttonorum'' (Blue-eye panaque) * ''Panaque titan'' Etymology The name ''Panaque'' is a Latinisation of a native Venezuelan name for these fish. It is pronounced "pan ack" in Brita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge
Sponges or sea sponges are primarily marine invertebrates of the animal phylum Porifera (; meaning 'pore bearer'), a basal clade and a sister taxon of the diploblasts. They are sessile filter feeders that are bound to the seabed, and are one of the most ancient members of macrobenthos, with many historical species being important reef-building organisms. Sponges are multicellular organisms consisting of jelly-like mesohyl sandwiched between two thin layers of cells, and usually have tube-like bodies full of pores and channels that allow water to circulate through them. They have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. They do not have complex nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes, usually via flagella movements of the so-called " collar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge Spicule
Spicules are structural elements found in most sponges. The meshing of many spicules serves as the sponge's skeleton and thus it provides structural support and potentially defense against predators. Sponge spicules are made of calcium carbonate or silica. Large spicules visible to the naked eye are referred to as megascleres or macroscleres, while smaller, microscopic ones are termed microscleres. The composition, size, and shape of spicules are major characters in sponge systematics and taxonomy. Overview Sponges are a species-rich clade of the earliest-diverging (most basal) animals. They are distributed globally, with diverse ecologies and functions, and a record spanning at least the entire Phanerozoic. Most sponges produce skeletons formed by spicules, structural elements that develop in a wide variety of sizes and three dimensional shapes. Among the four sub-clades of Porifera, three ( Demospongiae, Hexactinellida, and Homoscleromorpha) produce skeletons of am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loricaria Cataphracta
''Loricaria cataphracta'', sometimes known as the chocolate loricariid, is a species of catfish in the genus ''Loricaria'' and the family Loricariidae. It is native to South America, where it occurs in the Amazon River basin, as well as coastal rivers in the Guianas. It is known from Brazil, French Guiana, Guyana, Suriname, and Venezuela, where it is often seen in ponds. The species reaches 29.5 cm (11.6 inches) in standard length Fish measurement is the measuring of individual fish and various parts of fish anatomy, their anatomies, for data used in many areas of ichthyology, including Taxonomy (biology), taxonomy and fishery biology. Overall length Standard length (SL) is ... and is believed to be a facultative air-breather (i.e. it is able to rely on its gills for oxygen, rather than needing to sometimes breathe air). References Loricariini Taxa named by Carl Linnaeus Fish described in 1758 {{Loricariinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catfish
Catfish (or catfishes; order (biology), order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Catfish are common name, named for their prominent barbel (anatomy), barbels, which resemble a cat's whiskers, though not all catfish have prominent barbels or "whiskers", with some seemingly not having them. Siluriformes as a whole are Fish scale, scale-less, with neither the Armoured catfish, armour-plated nor the naked species having scales. This order of fish are Autapomorphy, defined by features of the skull and swimbladder. Catfish range in size and behavior from the three List of largest fish, largest species alive, the Mekong giant catfish from Southeast Asia, the wels catfish of Eurasia, and the piraíba of South America, to detritivorous and scavenging bottom feeders, down to tiny ectoparasitic species known as the Candiru (fish), candirus. In the Southern United States, catfish species may be known by a variety of slang names, such as "mud cat", " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harttia Guianensis
''Harttia guianensis'' is a species of armored catfish endemic to French Guiana where it is found in the Sinnamary and Approuague River The Approuague () river (or Apuruaque in Tupi) is a major river in French Guiana. It is long. It runs north from the Tumuk Humak Mountains to the Atlantic Ocean, almost parallel with the Oyapock, with its mouth by the Pointe Béhague cape. The ... basins. This species grows to a length of SL. References guianensis Catfish of South America Fish of French Guiana Endemic fauna of French Guiana Taxa named by Lúcia Helena Rapp Py-Daniel Taxa named by Edinbergh Caldas de Oliveira Fish described in 2001 {{Loricariinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
