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Callichthyidae
Callichthyidae is a family of catfishes (order Siluriformes), called armored catfishes due to the two rows of bony plates (or scutes) along the lengths of their bodies. It contains some of the most popular freshwater aquarium fish, such as many species in the genus '' Corydoras''. Taxonomy The family derives its name from the Greek words ''kallis'' (beautiful) and ''ichthys'' (fish). Callichthyidae is one of six families in the superfamily Loricarioidea, and is sister to a clade formed by Scoloplacidae, Astroblepidae, and Loricariidae. Within the family Callichthyidae, the two subfamilies have eight genera and about 177 species, accounting for about 7% of all catfish. Most of these species are in the genus ''Corydoras'', the largest catfish genus. The subfamily Corydoradinae includes about 90% of the species in the family Callichthyidae and is one of the most diverse siluriform assemblages in the Neotropics, with about 170 valid species. It includes two tribes, Aspidoradini an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brochis
''Corydoras'' is a genus of freshwater catfish in the family Callichthyidae and subfamily Corydoradinae. The species usually have more restricted areas of endemism than other callichthyids, but the area of distribution of the entire genus almost equals the area of distribution of the family, except for Panama where ''Corydoras'' is not present. ''Corydoras'' species are distributed in South America where they can be found from the east of the Andes to the Atlantic coast, from Trinidad to the Río de la Plata drainage in northern Argentina. Species assigned to ''Corydoras'' display a broad diversity of body shapes and coloration. ''Corydoras'' are small fish, ranging from in SL., and are protected from predators by their body armor and by their sharp, typically venomous spines. Taxonomy The name ''Corydoras'' is derived from the Greek ''kory'' (helmet) and ''doras'' (skin). ''Corydoras'' is by far the largest genus of Neotropical fishes with more than 160 species. It i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corydoras
''Corydoras'' is a genus of freshwater catfish in the family Callichthyidae and subfamily Corydoradinae. The species usually have more restricted areas of endemism than other callichthyids, but the area of distribution of the entire genus almost equals the area of distribution of the family, except for Panama where ''Corydoras'' is not present. ''Corydoras'' species are distributed in South America where they can be found from the east of the Andes to the Atlantic coast, from Trinidad to the Río de la Plata drainage in northern Argentina. Species assigned to ''Corydoras'' display a broad diversity of body shapes and coloration. ''Corydoras'' are small fish, ranging from in SL., and are protected from predators by their body armor and by their sharp, typically venomous spines. Taxonomy The name ''Corydoras'' is derived from the Greek ''kory'' (helmet) and ''doras'' (skin). ''Corydoras'' is by far the largest genus of Neotropical fishes with more than 160 species. It is the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspidoras
''Aspidoras'' is a genus of catfishes of the family Callichthyidae from Brazil. Taxonomy The type species for this genus is '' Aspidoras rochai''. The name ''Aspidoras'' is derived from the Greek ''aspis'' (shield) and ''dora'' (skin). ''Aspidoras'' is easily distinguished from the other genera of the subfamily Corydoradinae by the presence of a supraoccipital fontanel; this character is an autapomorphy for the genus. Many of the species of ''Aspidoras'' are similar and often hard to distinguish. Without specimens, it is often very difficult to positively identify a species from photographs alone. They are all small species. ''A. taurus'' is exceptional in that it just surpasses 5 cm in length. The monophyly of the genus has been demonstrated. Species There are currently 23 recognized species in this genus: * '' Aspidoras albater'' Nijssen & Isbrücker, 1976 (False macropterus) * '' Aspidoras belenos'' M. R. Britto, 1998 * '' Aspidoras brunneus'' Nijssen & Isbrücker ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siluriformes
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] |
Catfish
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] |
Loricarioidea
Loricarioidea is a superfamily of catfishes ( order Siluriformes). It contains the six families Trichomycteridae, Nematogenyiidae, Callichthyidae, Scoloplacidae, Astroblepidae, and Loricariidae. Some schemes also include Amphiliidae. This superfamily, including Amphiliidae, includes about 156 genera and 1,187 species. Taxonomy Loricarioidea is traditionally considered a part of Siluroidei, a clade of all catfishes excluding Diplomystidae. In Nelson, 2006, this grouping is sister to the superfamily Sisoroidea. However, in a recent molecular analysis, it was determined that the suborder Loricarioidei (not including Amphiliidae) is sister to a group including Diplomystidae and Siluroidei. Amphiliidae, in this analysis, was found to be much more closely related to Mochokidae or Malapteruridae. Loricarioidea is currently diagnosed by the derived presence of a reduced gas bladder, encapsulated in expansions of the parapophysis of the first vertebrae, and of odontodes, small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scleromystax
''Scleromystax'' is a genus of fish in the family Callichthyidae endemic to small tributaries from several coastal river basins draining the southern and southeastern regions in Brazil. Most of the species of ''Scleromystax'' are highly sexually dimorphic; males have developed odontodes inserted in fleshy papillae on the preopercular-opercular region and the dorsal and pectoral fins are 2–3 times as long as those of females. ''S. salmacis'' is an exception, as its sexually dimorphic features are subtle and non-remarkable. Taxonomy The species of ''Scleromystax'' were previously classified within the genus '' Corydoras''. However, ''Scleromystax'' species are now thought to be more closely related to ''Aspidoras'' in a tribe called Aspidoradini.Britto, M.R. (2003)Phylogeny of the subfamily Corydoradinae Hoedeman, 1952 (Siluriformes: Callichthyidae), with a definition of its genera. ''Proceedings of the Academy of Natural Sciences of Philadelphia, 153 (1): 119–154.'' Alth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megalechis
''Megalechis'' is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family. Taxonomy The name is derived from the Greek ''megas'', meaning "great", and the Greek ''lekis'', meaning "plate". No uniquely derived features are known for ''Megalechis''. A change in the synonymy of the species of ''Megalechis'' occurred in 2005. It is especially confusing because the name ''M. thoracata'' remains valid, but applies to the species formerly known as ''M. personata'', which becomes a new junior synonym of ''M. thoracata''. On the other hand, the species formerly known as ''M. thoracata'' is now named ''M. picta''. Species There are currently two recognized species in this genus: * '' Megalechis picta'' ( J. P. Müller & Troschel, 1849) (Spotted hoplo) * '' Megalechis thoracata'' (Valenciennes, 1840) Distribution Both species of ''Megalechis'' are distributed east of the Andes in the northern portion of South America, including the Amazona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepthoplosternum
''Lepthoplosternum'' is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family. Taxonomy The type species for this genus is ''Callichthys pectoralis''. The name is derived from the Greek ''leptos'', meaning "thin", the Greek ''hoplon'', meaning "weapon", and the Greek ''sternon'', meaning "chest" or "sternum". ''Lepthoplosternum'' is relatively basal among callichthyines, being sister to the clade comprising ''Megalechis'' + '' Dianema'' + ''Hoplosternum''. ''Callichthys'' is the most basal genus in the subfamily. ''L. stellatum'' and ''L. ucamara'' are hypothesized to form a partially unresolved polytomy with ''L. pectorale'' and ''L. beni'', which are sister-species to each other. ''L. tordilho'' is sister to these four species and ''L. altamazonicum'' is the most basal species. Species There are currently six recognized species in this genus: * '' Lepthoplosternum altamazonicum'' R. E. dos Reis, 1997 * '' Lepthoplosternum ben ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callichthys
''Callichthys'' is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family, and consists of 4 species from South America. The genus ''Callichthys'' is distributed in most freshwater drainages of South America. Taxonomy The type species for this genus is '' Silurus callichthys''. The name ''Callichthys'' is derived from the Greek ''kallos'' (beautiful) and ''ichthys'' (fish). 3 of the 4 species were described only relatively recently. The genus ''Callichthys'' is in need of taxonomic work, as it includes 13 nominal species but specimens of this genus are usually referred to as ''C. callichthys'' regardless of collecting locality. ''Callichthys'' is the most basal member of the subfamily Callichthyinae. Linnaeus described the first species in this genus in 1758, but three other members have been found since 1999. Species There are currently four recognized species in this genus: *''Callichthys callichthys'' (Linnaeus, 1758) (Cascarud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoplosternum
''Hoplosternum'' is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family. A fossil catfish has been identified as ''Hoplosternum sp.'' from the middle Miocene in the La Venta formation, Magdalena River basin, Colombia. Taxonomy The name ''Hoplosternum'' is derived from the Greek ''hoplon'' (weapon) and ''sternon'' (chest). Species There are currently three described species in this genus: * ''Hoplosternum littorale'' (Hancock, 1828) (Atipa) * '' Hoplosternum magdalenae'' C. H. Eigenmann, 1913 (Striped hoplo) * '' Hoplosternum punctatum'' Meek & Hildebrand, 1916 Distribution ''Hoplosternum'' species are found in tropical Central and South America especially in Guyana. It is called "Hassa" by the locals. Ecology ''Hoplosternum'' is normally found in large schools on the muddy bottoms of slow-moving rivers, pools, drainage ditches, and swampy areas. In water with low oxygen content, the fish are capable of utilizing atmospheri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dianema
''Dianema'' is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family. The type species for this genus is ''Dianema longibarbis''. The name is derived from the Greek ''di'', meaning "two", and ''nema'', meaning "filament". The two species of ''Dianema'' share approximately the same distribution, and are found in the Amazon River and lower courses of its tributaries. ''Dianema'' species have the habit of swimming midwater, as opposed to the bottom as in most callichthyids. Species There are currently two described species in this genus: *'' Dianema longibarbis'' Cope The cope (known in Latin as ''pluviale'' 'rain coat' or ''cappa'' 'cape') is a liturgical vestment, more precisely a long mantle or cloak, open in front and fastened at the breast with a band or clasp. It may be of any liturgical colour. A c ..., 1872 (Porthole catfish) *'' Dianema urostriatum'' ( A. Miranda-Ribeiro, 1912) (Flagtail catfish) References Call ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
