|
Kronichthys Heylandi
''Kronichthys'' is a genus of Loricariidae, armored catfishes endemism, endemic to Brazil. The genus is named in honor of naturalist-archaeologist Ricardo Krone (1861-1917), who collected the type species specimen. Species There are currently three recognized species in this genus: * ''Kronichthys heylandi'' (George Albert Boulenger, Boulenger, 1900) * ''Kronichthys lacerta'' (John Treadwell Nichols, Nichols, 1919) * ''Kronichthys subteres'' Alípio de Miranda-Ribeiro, A. Miranda-Ribeiro, 1908 Description ''Kronichthys'' species are small, cylindrical fishes similar to the Hypoptopomatinae, hypoptopomatine ''Schizolecis''. The color pattern is dark brown with a slight mottling or four dorsal saddles, and the abdomen mostly white. The dorsal fin is short and the adipose fin is small. References Neoplecostominae Suckermouth catfish of Brazil Endemic fish of Brazil Catfish genera Taxa named by Alípio de Miranda-Ribeiro Freshwater fish genera {{Neoplecostominae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alípio De Miranda-Ribeiro
Alípio de Miranda-Ribeiro (21 February 1874, Rio Preto, Minas Gerais – 8 January 1939) was a Brazilian herpetologist and ichthyologist. His son, Paulo de Miranda-Ribeiro (1901–1965), was also a zoologist. From an early age Alípio de Miranda-Ribeiro had a passion for natural history; as an adolescent he translated works of Buffon into Portuguese. He studied medicine in Rio de Janeiro, and from 1894 worked as a preparator at the National Museum of Brazil. Here he later served as secretary (from 1899), and director of the department of zoology (from 1929). During his career he explored the Amazon region many times, and under the direction of Candido Rondon (1865–1958) he took part in installing the first telegraph through the Amazon and Mato Grosso. In 1911, after visiting museums and fishery programs in Europe and the United States, he founded a fisheries inspectorate in Brazil, the first official services on fisheries in the nation. In 1911 he published the highly re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypoptopomatinae
The Hypoptopomatinae are a subfamily of catfishes (order Siluriformes) of the family Loricariidae, composed of 17 genera and approximately 80 species. This subfamily represents about one-tenth of all loricariid species. It has been divided into two tribes, Hypoptopomatini and Otothyrini. However, in a 2005 analysis, Otothyrini was found to not be monophyletic, with its representatives comprising a paraphyletic group in relation to the tribe Hypoptopomatini. More recent phylogenetic evidence shows that Hypoptopomatini and Otothyrini, while each are monophyletic tribes, do not form a monophyletic subfamily, and therefore should each be recognized as their own individual subfamilies. Problematically, the most recent hypoptopomatine genera, '' Gymnotocinclus'' and '' Rhinolekos'', were not classified in either of the tribes. Almost all species of Hypoptopomatinae have a diploid number of 2n = 54; this group is karyotypically very conserved. Hypoptopomatinae are distributed east of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catfish Genera
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 n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fish Of Brazil
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are Indigenous (ecology), indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suckermouth Catfish Of Brazil
In fish, a suckermouth is a ventrally-oriented (inferior) mouth adapted for grazing on algae and small organisms that grow on submerged objects. All Loricariidae possess a suckermouth as do the cypriniform algae eaters of the genus ''Gyrinocheilus'' and other genera. The 'False Siamensis' (Epalzeorhynchus sp. or Garra taeniata) also has this feature. Three genera in Mochokidae, '' Atopochilus'', '' Chiloglanis'', and '' Euchilichthys'', also possess an oral sucker, formed by the lips and part of the barbels. The Loricariidae and members of the genus ''Gyrinocheilus'' are further adapted by having a special opening on the gill cover so that the fish can breathe without using its mouth. Additionally many other fish of the order Cypriniformes have developed a sucking ability to a lesser or greater extent: *The Hillstream loaches (family Balitoridae) have modified fins to attach themselves to a surface and a ventrally located mouth. *The sucker fish (family Catostomidae) also have a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoplecostominae
Neoplecostominae is a subfamily of South American catfishes of the family Loricariidae. Species of this subfamily live in high-mountain and swift-flowing river habitats. Taxonomy This subfamily is the most basal clade in Loricariidae with the exception of Lithogeneinae. The genera do not form a monophyletic In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent co ... assemblage. Neoplecostominae is not diagnosed by any unique characteristic. However, molecular studies have supported this grouping. Within the paraphyletic Neoplecostominae, ''Pareiorhina'' forms a monophyletic subunit that also includes ''Neoplecostomus''. References {{Taxonbar, from=Q3338213 Neoplecostominae Fish of South America Ray-finned fish subfamilies Taxa named by Charles Tate Regan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adipose Fin
Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported only by muscles. Fish fins are distinctive anatomical features with varying structures among different clades: in ray-finned fish (Actinopterygii), fins are mainly composed of bony spines or rays covered by a thin stretch of scaleless skin; in lobe-finned fish (Sarcopterygii) such as coelacanths and lungfish, fins are short rays based around a muscular central bud supported by jointed bones; in cartilaginous fish (Chondrichthyes) and jawless fish (Agnatha), fins are fleshy " flippers" supported by a cartilaginous skeleton. Fins at different locations of the fish body serve different purposes, and are divided into two groups: the midsagittal ''unpaired fins'' and the more laterally located ''paired fins''. Unpaired fins are predominantly a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsal Fin
A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous. They are found in most fish, in mammals such as whales, and in extinct ancient marine reptiles such as ichthyosaurs. Most have only one dorsal fin, but some have two or three. Wildlife biologists often use the distinctive nicks and wear patterns which develop on the dorsal fins of whales to identify individuals in the field. The bones or cartilages that support the dorsal fin in fish are called pterygiophores. Functions The main purpose of the dorsal fin is usually to stabilize the animal against rolling and to assist in sudden turns. Some species have further adapted their dorsal fins to other uses. The sunfish uses the dorsal fin (and the anal fin Fins are moving appendages protruding from the body of fish that interact with water to ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schizolecis
''Schizolecis guntheri'' is a species of loricariid catfish (order Siluriformes) and the only known member of the monotypic genus ''Schizolecis''. Distribution and habitat This species occurs mainly in coastal rivers of the Atlantic Forest in southeastern and southern Brazil. These fish inhabit streams with rocky and sandy bottom, mostly in shallows and backwaters up to 30 centimetres (12 in) deep, with slow water flow. Appearance and anatomy ''S. guntheri'' reaches a maximum length of SL in males and 3 cm (1.2 in) SL in females. Normally pigmented specimens of ''S. guntheri'' have a dark background color on the body and caudal fin, with some light spots and an unpigmented ventral body surface. These fish have been found in an albino form in their natural habitat. Ecology ''S. guntheri'' forage mostly during the day, though some night activity has also been recorded. These fish graze on microscopic algae, mostly diatoms and green algae growing on rocks an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kronichthys Subteres
''Kronichthys subteres'' is a species of armored catfish endemic to Brazil where it occurs in the Ribeira de Iguape River basin. This species grows to a length of TL. ''Kronichthys subteres'' inhabits streams with rocky and sandy bottom. This species forages both during the day and at night, grazing on microscopic algae, mostly diatoms and green algae growing on rocks and submersed vegetation. They occasionally take chironomid and simuliid larvae, as well as tiny crustacean Crustaceans (from Latin meaning: "those with shells" or "crusted ones") are invertebrate animals that constitute one group of arthropods that are traditionally a part of the subphylum Crustacea (), a large, diverse group of mainly aquatic arthrop ...s. Before grazing on a patch with dense sediment, the fish makes wiggling head-down movements which raise sediment, which is blown away by the water current. When grazing algae off the substrate, the fish makes vigorous mouth movements, and moves by jerky mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Treadwell Nichols
John Treadwell Nichols (June 11, 1883 – November 10, 1958) was an American ichthyologist and Ornithology, ornithologist. Life and career Nichols was born in Jamaica Plain, Boston, Massachusetts, the son of Mary Blake (Slocum) and John White Treadwell Nichols. In 1906 he studied vertebrate zoology at Harvard College, where he graduated with a Bachelor of Arts (AB). In 1907 he joined the American Museum of Natural History as assistant in the department of mammalogy. In 1913 he founded ''Copeia'', the official journal of the American Society of Ichthyologists and Herpetologists. In 1916 he described the long lost Bermuda petrel together with Louis L. Mowbray, Louis Leon Arthur Mowbray who first sighted this bird within a flock of other petrels in 1906 on Castle Island, Bermuda 45 years before it was officially rediscovered by Mowbray's son Louis. He also described the fish genus ''Bajacalifornia''. He also worked with a team of scientists from the American Museum of Natural Histo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
