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Empetrichthys
''Empetrichthys'' is a genus of splitfins endemism, endemic to the state of Nevada in the United States. In 1989 they only had an estimated population of 24800, while its two other subspecies had gone extinct. This species mating season typically falls in spring. These animals are in danger and facing threats because their water is drying out because of pumping of ground water for agricultural developments. Species There are currently two recognized recent species in this genus of which only one is extant, in addition to one fossil species: * ''Empetrichthys latos'' R. R. Miller, 1948 ** ''Empetrichthys latos concavus'' Robert Rush Miller, R. R. Miller, 1948 (Raycraft Ranch poolfish) ** ''Empetrichthys latos latos'' Robert Rush Miller, R. R. Miller, 1948 (Pahrump poolfish) ** ''Empetrichthys latos pahrump'' Robert Rush Miller, R. R. Miller, 1948 (Pahrump Ranch poolfish) * ''Empetrichthys merriami'' Charles Henry Gilbert, C. H. Gilbert, 1893 (Ash Meadows poolfish) * ''Empetrichthys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empetrichthys Latos Latos
''Empetrichthys'' is a genus of splitfins endemic to the state of Nevada in the United States. In 1989 they only had an estimated population of 24800, while its two other subspecies had gone extinct. This species mating season typically falls in spring. These animals are in danger and facing threats because their water is drying out because of pumping of ground water for agricultural developments. Species There are currently two recognized recent species in this genus of which only one is extant, in addition to one fossil species: * '' Empetrichthys latos'' R. R. Miller, 1948 ** '' Empetrichthys latos concavus'' R. R. Miller, 1948 (Raycraft Ranch poolfish) ** '' Empetrichthys latos latos'' R. R. Miller, 1948 (Pahrump poolfish) ** '' Empetrichthys latos pahrump'' R. R. Miller, 1948 (Pahrump Ranch poolfish) * ''Empetrichthys merriami'' C. H. Gilbert, 1893 (Ash Meadows poolfish) * ''Empetrichthys erdisi'' (Jordan, 1924) (fossil, Miocene or Pliocene of California Californ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empetrichthys Latos
''Empetrichthys latos'' is a rare species of fish in the family Goodeidae, the splitfins. It is known by the common names Pahrump poolfish and Pahrump killifish, the former being more correct today.USFWSWithdrawal of proposed rule to reclassify the Pahrump Poolfish (''Empetrichthys latos'') from endangered to threatened status.(April 2, 2004). ''Federal Register''. Retrieved September 28, 2011. It is endemic to Nevada in the United States, where it was limited to the Pahrump Valley near the California border. It nearly became extinct due to habitat destruction and no longer occurs there. It is a federally listed endangered species of the United States.USFWS''Empetrichthys latos'' Recovery Plan.(March 1980). Retrieved September 28, 2011. The Pahrump Poolfish is long-lived for a small-bodied fish, with ages up to 10 years for females and 7 years for males documented. The Pahrump Poolfish is sexually dimorphic; females being significantly larger. This is an important consideration f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empetrichthys Merriami
The Ash Meadows killifish (''Empetrichthys merriami'') is a species of killifish from the subfamily Empetrichthyinae, part of the family Goodeidae, which was first documented by C. H. Gilbert in 1893 and historically occupied numerous springs near Ash Meadows, Nye County, Nevada, United States. This species was last seen in 1948 and is believed to have gone extinct in the early 1950s, likely as a result of habitat alteration and competition with and predation by introduced crayfish ''Procambarus clarkii'', mosquitofish (''Gambusia affinis''), black mollies (''Poecilia sphenops''), and bullfrogs ('' Rana catesbeiana''). The common name of the genus ''Empetrichthys'' has since been changed from killifish to poolfish. The specific name honours the American naturalist and physician C. Hart Merriam (1855–1942), who led the Death Valley (California, USA) expedition, during which he and Vernon Orlando Bailey (1864–1942) co-collected the type Type may refer to: Science and techn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empetrichthys Latos Concavus
The Raycraft Ranch killifish or Raycraft poolfish (''Empetrichthys latos concavus''), a subspecies of the killifish ''Empetrichthys latos'', was first described in 1948. This subspecies was restricted to a single spring on the Raycraft Ranch in the Pahrump Valley of Nye County, Nevada Nevada ( ; ) is a landlocked state in the Western United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, th .... It became extinct, most likely late in the 1950s, as a result of groundwater extraction and the filling in of the spring, along with competition from introduced carp species. References Raycraft Ranch killifish Extinct animals of the United States Fish described in 1948 Fish of North America becoming extinct since 1500 {{Cyprinodontiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Splitfin
Goodeidae is a family of teleost fish endemic to Mexico and some areas of the United States. Many species are known as splitfins. This family contains about 50 species within 18 genera. The family is named after ichthyologist George Brown Goode (1851–1896). The earliest fossil goodeid is '' Tapatia'', a goodeine from the middle Miocene of Mexico. The earliest fossil empetrichthyine is '' Empetrichthys erdisi'' from the Miocene or Pliocene of California. Distribution The family is divided into two subfamilies, the Goodeinae and the Empetrichthyinae. The Goodeinae are endemic to shallow freshwater habitats in Mexico, particularly along the Mesa Central area (especially the Lerma River basin, smaller rivers directly south of it and inland to around the Valley of Mexico region), with some species found in brackish fringes at the Pacific coast, and north to central Durango, central Sinaloa and north San Luis Potosí. There are about 45 species of Goodeinae in 16 genera (some l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empetrichthyinae
Empetrichthyinae is a subfamily of fishes, one of two subfamilies that make up the family Goodeidae. The earliest fossil empetrichthyine is '' Empetrichthys erdisi'' from the Miocene or Pliocene of California. Genera There are two genera within the subfamily Empetrichthyinae: * '' Crenichthys'' Hubbs, 1932 * ''Empetrichthys ''Empetrichthys'' is a genus of splitfins endemism, endemic to the state of Nevada in the United States. In 1989 they only had an estimated population of 24800, while its two other subspecies had gone extinct. This species mating season typically ...'' Gilbert, 1893 References {{Taxonbar, from=Q20722376 Goodeidae Taxa named by David Starr Jordan Taxa named by Barton Warren Evermann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene followed the Oligocene and preceded the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by distinct global events but by regionally defined transitions from the warmer Oligocene to the cooler Pliocene Epoch. During the Early Miocene, Afro-Arabia collided with Eurasia, severing the connection between the Mediterranean and Indian Oceans, and allowing the interchange of fauna between Eurasia and Africa, including the dispersal of proboscideans and Ape, hominoids into Eurasia. During the late Miocene, the conn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Charles Henry Gilbert
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Genera
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mineral-rich waters, such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of vascular plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh water is the water resource that is of the most and immediate use to humans. Fresh water is not always ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
