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Oxygaster
''Oxygaster'' is a genus of freshwater ray-finned fish belonging to the family Xenocyprididae, the East Asian minnows or sharpbellies. The species in this genus are found in Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au .... Species These are the currently recognized species in this genus: * '' Oxygaster anomalura'' van Hasselt, 1823 * '' Oxygaster pointoni'' ( Fowler, 1934) References Xenocyprididae Taxa named by Johan Conrad van Hasselt {{Cyprinidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxygaster Anomalura
''Oxygaster anomalura'' are medium-sized freshwater fishes in the family Xenocyprididae, that can reach up to 200 mm SL(standard length), and are found near the surface in small- to medium-sized rivers in Southeast Asia, where they live off a diet of invertebrates. Rivers in Southeast Asia There are many rivers that run throughout Southeast Asia. In Malaysia, there is the Batang Kerang floodplain, which is located in Balai Ringin, Sarawak and is home to many species of fish including ''Oxygaster anomalura''. In Batang Kerang, there are streams that are shaded by canopy vegetation. They have developed steep, muddy banks that have been affected by the frequent rise and fall of water levels. Areas where swamps or peaty soils develop, the waters can be seen as heavily colored. These dark, colored streams are commonly known as black water streams or rivers. Black water rivers are typically highly acidic, with pH ranging from 3.6 - 5.9, with low dissolved organic and suspended soli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxygaster
''Oxygaster'' is a genus of freshwater ray-finned fish belonging to the family Xenocyprididae, the East Asian minnows or sharpbellies. The species in this genus are found in Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au .... Species These are the currently recognized species in this genus: * '' Oxygaster anomalura'' van Hasselt, 1823 * '' Oxygaster pointoni'' ( Fowler, 1934) References Xenocyprididae Taxa named by Johan Conrad van Hasselt {{Cyprinidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxygaster Pointoni
''Oxygaster pointoni'' is a freshwater ray-finned fish of the family Xenocyprididae from the rivers of Indochina. Habitat and diet ''Oxygaster pointoni'' is a pelagic species which can be found near the surface of medium-sized rivers. It probably has a similar diet to ''Oxygaster anomalura'' consisting of chironomids and small molluscs. Distribution ''Oxygaster pointoni''is found in the Chao Phraya River and Mekong River in Thailand, Cambodia and Laos. Human use and threats ''O. pointoni'' is not normally encountered in fish markets and this means that it may be exploited at only by at a subsistence fishermen. It is unknown in aquaculture, so any fish harvested will be wild. It is threatened by the pollution and damming of the rivers it inhabits and the population of this fish has thought to have declined by 30% in the ten years up to 2009, which is why the IUCN The International Union for Conservation of Nature (IUCN) is an international organization working in the fiel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenocyprididae
Xenocyprididae, is a family of freshwater ray-finned fishes commonly called the East Asian minnows or sharpbellies with a natural distribution in Asia. This taxon, sometimes spelt Xenocypridae, was previously regarded to be a subfamily, Xenocyprinae, of the family Cyprinidae. Cyprinidae '' sensu lato'' is now divided into a number of smaller families within the suborder Cyprinoidei, in the order Cypriniformes. Genera Xenocyprididae contains the following valid genera: A potential fossil genus of the Xenocyprinae is '' Planktophaga'' from the middle-late Eocene of Vietnam. Although initially classified under the East Asian group of Leuciscinae ''sensu lato'' (as ''Hypophthalmichthys'' was previously classified under it), it has unique pharyngeal teeth only shared with ''Hypophthalmichthys'', and thus may represent a basal member of the group. Fossil teeth of indeterminate xenocyprines were found from the same site. Taxonomy Xenocyprididae was previously considered to be a part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johan Coenraad Van Hasselt
Johan Conrad van Hasselt (occasionally Johan Coenraad van Hasselt; 24 June 1797 in Doesburg – 8 September 1823), was a Dutch people, Dutch physician, zoologist, botanist and mycologist. Conrad van Hasselt studied medicine at the University of Groningen. In 1820 he went on an expedition to the island of Java, then part of the colonial Dutch East Indies, with his friend Heinrich Kuhl, to study the fauna and flora of the island. They sailed from Texel on 11 July, stopping at Madeira, the Cape of Good Hope and Cocos (Keeling) Islands, Cocos Island and arriving in Batavia, Dutch East Indies, Batavia in December 1820. Kuhl died after eight months, van Hasselt continued the work for another two years before dying (like Kuhl) of disease and exhaustion. This followed a journey to Bantam (city), Bantam. They sent the Rijksmuseum van Natuurlijke Historie, Museum of Leiden 200 skeletons, 200 skins of mammals from 65 species, 2,000 bird skins, 1,400 fish, 300 reptiles and amphibians, and man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinopterygii
Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class (biology), class of Osteichthyes, bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fish fin, fins made of webbings of skin supported by radially extended thin bony spine (zoology), spines called ''lepidotrichia'', as opposed to the bulkier, fleshy lobed fins of the sister taxon, sister clade Sarcopterygii (lobe-finned fish). Resembling folding fans, the actinopterygian fins can easily change shape and wetted area, providing superior thrust-to-weight ratios per movement compared to sarcopterygian and chondrichthyian fins. The fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the articulation (anatomy), articulation between these fins and the internal skeleton (e.g., pelvic and pectoral girdles). The vast majority of actinopterygians are teleosts. By species count, they domi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) 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". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southeast Asia
Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Australia, Australian mainland, which is part of Oceania. Southeast Asia is bordered to the north by East Asia, to the west by South Asia and the Bay of Bengal, to the east by Oceania and the Pacific Ocean, and to the south by Australia (continent), Australia and the Indian Ocean. Apart from the British Indian Ocean Territory and two out of Atolls of the Maldives, 26 atolls of the Maldives in South Asia, Maritime Southeast Asia is the only other subregion of Asia that lies partly within the Southern Hemisphere. Mainland Southeast Asia is entirely in the Northern Hemisphere. Timor-Leste and the southern portion of Indonesia are the parts of Southeast Asia that lie south of the equator. The region lies near the intersection of Plate tectonics, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Weed Fowler
Henry Weed Fowler (March 23, 1878 – June 21, 1965) was an American zoologist born in Holmesburg, Philadelphia, Holmesburg, Pennsylvania. He studied at Stanford University under David Starr Jordan. He joined the Academy of Natural Sciences in Philadelphia and worked as an assistant from 1903 to 1922, associate curator of vertebrates from 1922 to 1934, curator of fish and reptiles from 1934 to 1940 and curator of fish from 1940 to 1965. He published material on numerous topics including crustaceans, birds, reptiles and amphibians, but his most important work was on fish. In 1927 he co-founded the American Society of Ichthyologists and Herpetologists and acted as treasurer until the end of 1927. In 1934, he went to Cuba, alongside Charles Cadwalader (president of the Academy of Natural Sciences of Drexel University, Academy of Natural Sciences of Philadelphia), at the invitation of Ernest Hemingway to study billfishes, he stayed with Hemingway for six weeks and the three men devel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
