|
Opistognathidae
Opistognathidae, the jawfishes, are a family of fishes which have been classified within the order Perciformes, suborder Percoidei but many authorities now classify this family within the clade Ovalentaria and consider that its affinities within that clade are uncertain, i.e. it is ''incertae sedis''. The family includes about 80 species. They are native to warmer parts of the Atlantic, Pacific and Indian Oceans, where found from the shallows to depths of a few hundred meters. The species level taxonomy is complex and the family includes several undescribed species. Physically similar to blennies, most jawfish species are small fish (up to ) with an elongated body plan. A few species, for example the aptly named giant jawfish (''O. rhomaleus''), reaches about . Their heads, mouths, and eyes are large in size relative to the rest of their bodies. Jawfishes possess a single, long dorsal fin with 9-12 spines and a caudal fin that can be either rounded or pointed. Jawfishes typicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opistognathus Randalli
''Opistognathus'' is a genus of fish in the family Opistognathidae found in the Atlantic, Indian and Pacific Ocean. Species There are currently 68 recognized species in this genus: * '' Opistognathus adelus'' Smith-Vaniz, 2010 (Obscure jawfish) Smith-Vaniz, W.F. (2010): New species of Indo-Pacific jawfishes (''Opistognathus'': Opistognathidae) from the Western Indian Ocean and Red Sea. ''Smithiana Bulletin, 12: 39-54.'' * '' Opistognathus afer'' Smith-Vaniz, 2010 (African jawfish) * '' Opistognathus albicaudatus'' Smith-Vaniz, 2011 (White-tail jawfish) Smith-Vaniz, W.F. (2011)''Opistognathus albicaudatus'', a new species of jawfish (Teleostei: Opistognathidae) from the Andaman Islands.''Zootaxa, 3085: 34–40.'' * '' Opistognathus alleni'' Smith-Vaniz, 2004 (Abrolhos jawfish) * '' Opistognathus annulatus'' ( Eibl-Eibesfeldt & Klausewitz, 1961) * ''Opistognathus aurifrons'' ( D. S. Jordan & J. C. Thompson, 1905) (Yellow-head jawfish) * '' Opistognathus brasiliensis'' Smith- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opistognathus Rhomaleus
''Opistognathus'' is a genus of fish in the family Opistognathidae found in the Atlantic, Indian and Pacific Ocean. Species There are currently 68 recognized species in this genus: * '' Opistognathus adelus'' Smith-Vaniz, 2010 (Obscure jawfish) Smith-Vaniz, W.F. (2010): New species of Indo-Pacific jawfishes (''Opistognathus'': Opistognathidae) from the Western Indian Ocean and Red Sea. ''Smithiana Bulletin, 12: 39-54.'' * '' Opistognathus afer'' Smith-Vaniz, 2010 (African jawfish) * '' Opistognathus albicaudatus'' Smith-Vaniz, 2011 (White-tail jawfish) Smith-Vaniz, W.F. (2011)''Opistognathus albicaudatus'', a new species of jawfish (Teleostei: Opistognathidae) from the Andaman Islands.''Zootaxa, 3085: 34–40.'' * '' Opistognathus alleni'' Smith-Vaniz, 2004 (Abrolhos jawfish) * '' Opistognathus annulatus'' ( Eibl-Eibesfeldt & Klausewitz, 1961) * ''Opistognathus aurifrons'' ( D. S. Jordan & J. C. Thompson, 1905) (Yellow-head jawfish) * '' Opistognathus brasiliensis'' Smith- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anoptoplacus
The pygmy jawfish (''Anoptoplacus pygmaeus'') is a species of ray-finned fish from the family Opistognathidae, the jawfishes. It is the only member of the monospecific genus ''Anoptoplacus'' and the species and genus were described based on two specimens collected at depths of at the Arrowsmith Bank off Yucatan, Mexico. As the name suggests, the pygmy jawfish is a very small species and many of its meristic Meristics is an area of ichthyology and herpetology which relates to counting quantitative features of fish and Reptile, reptiles, such as the number of fins or scales. A meristic (countable trait) can be used to describe a particular species of fi ... characters are reduced compared to other jawfishes. References {{taxonbar, from=Q60791220 Opistognathidae Fish described in 2017 Taxa named by William Farr Smith-Vaniz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lonchopisthus
''Lonchopisthus'' is a genus of jawfishes native to the tropical West Atlantic (Caribbean Sea) and East Pacific oceans (Gulf of California). Species There are currently five recognized species in this genus: * '' Lonchopisthus ancistrus'' Smith-Vaniz & Walsh, 2017 (Hook jawfish) * '' Lonchopisthus higmani'' Mead Mead () is an alcoholic beverage made by fermenting honey mixed with water, and sometimes with added ingredients such as fruits, spices, grains, or hops. The alcoholic content ranges from about 3.5% ABV to more than 20%. The defining character ..., 1959 * '' Lonchopisthus lemur'' ( G. S. Myers, 1935) * '' Lonchopisthus micrognathus'' ( Poey, 1860) (Swordtail jawfish) * '' Lonchopisthus sinuscalifornicus'' Castro-Aguirre & Villavicencio-Garayzar, 1988 (Longtailed jawfish) References Opistognathidae {{ray-finned fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovalentaria
Ovalentaria is a clade of ray-finned fishes within the Percomorpha, referred to as a subseries. It is made up of a group of fish families which are referred to in ''Fishes of the World's'' fifth edition as'' incertae sedis'', as well as the orders Mugiliformes, Cichliformes, and Blenniiformes. It was named by W. L. Smith and T. J. Near in Wainwright ''et al.'' (2012) based on a molecular phylogeny, but the authors suggested that the group was united by the presence of demersal eggs that are attached to a substrate. Some authors have used the ordinal name Stiassnyiformes for a clade including Mugiloidei, Plesiopidae, Blenniiformes, Atherinomorpha, and Cichlidae, and this grouping does appear to be monophyletic. Classification In the 5th edition of'' Fishes of the World'', the Ovalentaria are classified as: * ''incertae sedis'' ** Family Ambassidae (Asian glassfishes) ** Family Embiotocidae (surfperches) ** Family Grammatidae (basslets) ** Family Plesiopidae (roundheads) ** F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mouthbrooders
Mouthbrooding, also known as oral incubation and buccal incubation, is the care given by some groups of animals to their offspring by holding them in the mouth of the parent for extended periods of time. Although mouthbrooding is performed by a variety of different animals, such as the Darwin's frog, fish are by far the most diverse mouthbrooders. Mouthbrooding has evolved independently in several different families of fish. Mouthbrooding behaviour Paternal mouthbrooders are species where the male looks after the eggs. Paternal mouthbrooders include the arowana, various mouthbrooding bettas and gouramies such as '' Betta pugnax'', and sea catfish such as ''Ariopsis felis''. Among cichlids, paternal mouthbrooding is relatively rare, but is found among some of the tilapiines, most notably the black-chin tilapia ''Sarotherodon melanotheron''. In the case of the maternal mouthbrooders, the female takes the eggs. Maternal mouthbrooders are found among both African and South American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, the equivalent Latin term ''cladus'' (plural ''cladi'') is often used in taxonomical literature. The common ancestor may be an individual, a population, or a species (extinct or extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed monophyletic (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic. Some of the relationships between organisms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene
The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek (''olígos'', "few") and (''kainós'', "new"), and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansion o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quaternary
The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ago to the present. The Quaternary Period is divided into two epochs: the Pleistocene (2.58 million years ago to 11.7 thousand years ago) and the Holocene (11.7 thousand years ago to today, although a third epoch, the Anthropocene, has been proposed but is not yet officially recognised by the ICS). The Quaternary Period is typically defined by the cyclic growth and decay of continental ice sheets related to the Milankovitch cycles and the associated climate and environmental changes that they caused. Research history In 1759 Giovanni Arduino proposed that the geological strata of northern Italy could be divided into four successive formations or "orders" ( it, quattro ordini). The term "quaternary" was introduced by Jules Desnoye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Ovalentaria")
