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Oscura (fish)
The Montecristo cichlid (''Oscura heterospila'') is a species of freshwater fish from the Atlantic slope of southern Mexico and Guatemala. This cichlid occurs in lagoons, creeks and rivers with slight to moderate current in the Grijalva–Usumacinta, Candelaria, Champotón and Coatzacoalcos river drainages. It is currently recognized as the only species in its genus, but it is closely related to –and possibly should be merged into– ''Vieja'' (a genus where it also has been placed in the past). The Montecristo cichlid reaches up to in standard length 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 m .... References Heroini Fish described in 1936 {{Cichlidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prosanta Chakrabarty
Prosanta Chakrabarty (born November 25, 1978) is an American ichthyologist and professor of ichthyology, evolution and systematics at Louisiana State University. He studied at McGill University where he received a bachelor of science in Applied Zoology and at the University of Michigan where he obtained his PhD in Ecology and Evolution. Among other professional positions he was a Program Director for the National Science Foundation and is currently the President-Elect of the American Society of Ichthyologist and Herpetologist. He was named a TED Fellow in 2016, and a TED Senior Fellow in 2018. He was named an Elected Fellow of the AAAS for "distinguished contributions to evolutionary biology, focusing on the bioluminescent systems and historical biogeography of freshwater fishes, and for effectively communicating science to the public." Research Chakrabarty's research has taken him to over 30 countries and has described over 13 new species of fishes. In 2014 he discovered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Leavitt Hubbs
Carl Leavitt Hubbs (October 19, 1894 – June 30, 1979) was an American ichthyologist. Biography Youth He was born in Williams, Arizona. He was the son of Charles Leavitt and Elizabeth (née Goss) Hubbs. His father had a wide variety of jobs (farmer, iron mine owner, newspaper owner). The family moved several times before settling in San Diego where he got his first taste of natural history. After his parents divorced in 1907, he lived with his mother, who opened a private school in Redondo Beach, California. His maternal grandmother Jane Goble Goss, one of the first female doctors, showed Hubbs how to harvest shellfish and other sea creatures. One of his teachers, impressed by Hubbs's abilities in science, recommended that he study chemistry at the University of Berkeley. The family moved once more to Los Angeles. In Los Angeles, George Bliss Culver, one of the many volunteers of David Starr Jordan, encouraged Hubbs to abandon his study of birds and instead to study fish, par ... [...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] |
Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Mexico covers ,Mexico ''''. . making it the world's 13th-largest country by are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guatemala
Guatemala ( ; ), officially the Republic of Guatemala ( es, República de Guatemala, links=no), is a country in Central America. It is bordered to the north and west by Mexico; to the northeast by Belize and the Caribbean; to the east by Honduras; to the southeast by El Salvador and to the south by the Pacific Ocean. With an estimated population of around million, Guatemala is the most populous country in Central America and the 11th most populous country in the Americas. It is a representative democracy with its capital and largest city being Nueva Guatemala de la Asunción, also known as Guatemala City, the most populous city in Central America. The territory of modern Guatemala hosted the core of the Maya civilization, which extended across Mesoamerica. In the 16th century, most of this area was conquered by the Spanish and claimed as part of the viceroyalty of New Spain. Guatemala attained independence in 1821 from Spain and Mexico. In 1823, it became part of the Fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cichlid
Cichlids are fish from the family Cichlidae in the order Cichliformes. Cichlids were traditionally classed in a suborder, the Labroidei, along with the wrasses ( Labridae), in the order Perciformes, but molecular studies have contradicted this grouping. The closest living relative of cichlids is probably the convict blenny, and both families are classified in the 5th edition of ''Fishes of the World'' as the two families in the Cichliformes, part of the subseries Ovalentaria. This family is both large and diverse. At least 1,650 species have been scientifically described, making it one of the largest vertebrate families. New species are discovered annually, and many species remain undescribed. The actual number of species is therefore unknown, with estimates varying between 2,000 and 3,000. Many cichlids, particularly tilapia, are important food fishes, while others, such as the ''Cichla'' species, are valued game fish. The family also includes many popular freshwater aquariu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grijalva River
Grijalva River, formerly known as ''Tabasco River'', ( es, Río Grijalva, known locally also as Río Grande de Chiapas, Río Grande and Mezcalapa River) is a long river in southeastern Mexico."Grijalva." ''Merriam-Webster's Geographical Dictionary'', 3rd ed. 2001. () Springfield, MA: Merriam-Webster Inc., p. 450. It is named after Juan de Grijalva who visited the area in 1518. The river rises from Río Grande de Chiapas in southeastern Chiapas and flows from Chiapas to the state of Tabasco through the Sumidero Canyon into the Bay of Campeche. Begins as "Río Grande de Chiapas" or "Río Mezcalapa", later, Río Grande is stopped at the Angostura Dam (Mexico), one of the largest reservoirs in Mexico, and then its course is now named "Grijalva River". The river's drainage basin is in size. Because of the close connection to the Usumacinta River (the two combine, flowing into the Gulf of Mexico in a single delta), they are often regarded as a single river basin, the Grijalva-Us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Usumacinta River
The Usumacinta River (; named after the howler monkey) is a river in southeastern Mexico and northwestern Guatemala. It is formed by the junction of the Pasión River, which arises in the Sierra de Santa Cruz (Guatemala), Sierra de Santa Cruz (in Guatemala) and the Salinas River (Guatemala), Salinas River, also known as the Chixoy River, Rio Chixoy, or the Rio Negro, which descends from the Sierra Madre de Chiapas, Sierra Madre de Guatemala. It defines part of the border between Guatemala and the Mexican state of Chiapas, then continues its northwesterly course, meandering through the Mexican state of Tabasco to the Gulf of Mexico. After serving as a border between Mexico and Guatemala, the Usumacinta River enters Mexican territory in the state of Tabasco and across the Cañón del Usumacinta (Usumacinta Canyon) ecological reserve, forming impressive canyons along its route. Passing the canyon called ''"Boca del Cerro",'' Tenosique, the Usumacinta goes into the plain of Tabasc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Candelaria River
The Candelaria River is a river of Central America that flows from Guatemala to Laguna de Términos, Mexico, It has a length of about and drains a basin of . See also *List of rivers of Mexico This is a list of rivers of Mexico, listed from north to south. There are 246 rivers on this list. Alternate names for rivers are given in parentheses. Rivers flowing into the Gulf of Mexico *Río Bravo, the name of the Rio Grande in Mexico ** Sa ... References *Atlas of Mexico, 1975 (http://www.lib.utexas.edu/maps/atlas_mexico/river_basins.jpg). *The Prentice Hall American World Atlas, 1984. *Rand McNally, The New International Atlas, 1993. Rivers of Guatemala Rivers of Mexico International rivers of North America Drainage basins of the Gulf of Mexico Geography of Campeche {{Guatemala-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Champotón River
The Champotón River is a river of Mexico. See also *List of rivers of Mexico This is a list of rivers of Mexico, listed from north to south. There are 246 rivers on this list. Alternate names for rivers are given in parentheses. Rivers flowing into the Gulf of Mexico * Río Bravo, the name of the Rio Grande in Mexico ** S ... References *Atlas of Mexico, 1975: *The Prentice Hall American World Atlas, 1984. *Rand McNally, The New International Atlas, 1993. Rivers of Mexico {{Mexico-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coatzacoalcos River
The Coatzacoalcos is a large river that feeds mainly the south part of the state of Veracruz; it originates in the Sierra de Niltepec and crosses the state of Oaxaca in the region of the Isthmus of Tehuantepec, flowing for toward the Gulf of Mexico. Tributaries include El Corte, Sarabia, Jaltepec, Chalchijalpa, El Chiquito, Uxpanapa, and Calzadas. The merging of all these rivers creates one of the largest current flows in the entire region. Two-thirds of the streams are navigable. Juan de Grijalva's 1518 expedition encountered the river.Diaz, B., 1963, The Conquest of New Spain, London: Penguin Books, Hernán Cortés sent Diego de Ordaz to explore the river as a possible port. History The Coatzacoalcos River is one of the most important rivers in Mexico. The oldest map of this river was drawn by Francisco Gali in 1580. Unlike most maps made in New Spain in the last quarter of the sixteenth century, this map is purely European in style and is somewhat reminiscent of a n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
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 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. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
