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Arowana
Arowanas are freshwater bony fish of the subfamily Osteoglossinae, also known as bony tongues (the latter name is now often reserved for Arapaiminae). In this family of fish, the head is bony and the elongated body is covered by large, heavy scales, with a mosaic pattern of canals. The dorsal and anal fins have soft rays and are long based, while the pectoral and ventral fins are small. The name "bonytongues" is derived from a toothed bone on the floor of the mouth, the "tongue", equipped with teeth that bite against teeth on the roof of the mouth. The arowana is a facultative air breather and can obtain oxygen from air by sucking it into its swim bladder, which is lined with capillaries like lung tissue. Evolution Within Osteoglossinae, the South America ''Osteoglossum'' arowanas diverged from the Asian and Australian ''Scleropages'' arowanas about 170 Mya, during the Middle Jurassic. The Osteoglossidae are the only exclusively freshwater fish family found on both sides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asian Arowana
The Asian arowana (''Scleropages formosus'') comprises several phenotypic varieties of freshwater fish distributed geographically across Southeast Asia. While most consider the different varieties to belong to a single species, work by Pouyaud ''et al.'' (2003) differentiates these varieties into multiple species. They have several other common names, including Asian bonytongue, dragonfish, and a number of names specific to the different color varieties. Native to Southeast Asia, Asian arowanas inhabit blackwater rivers, slow-moving waters flowing through forested swamps and wetlands. Adults feed on other fish, while juveniles feed on insects. These popular aquarium fish have special cultural significance in areas influenced by Chinese culture. The name 'dragonfish' stems from their resemblance to the Chinese dragon. This popularity has had both positive and negative effects on their status as endangered species. Evolution and taxonomy Like all members of the Osteoglossidae, As ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Arowana
The silver arowana (''Osteoglossum bicirrhosum'') is a South American freshwater bony fish of the family Osteoglossidae. Silver arowanas are sometimes kept in aquariums, but they are predatory and require a very large tank. The generic name ''Osteoglossum'' means "bone-tongued" and the specific name ''bicirrhosum'' means "two barbels" (from the Greek language). Range and habitat This South American species is native to the Amazon, Essequibo and Oyapock basins. It is absent from the Rio Negro basin, except the Branco River, which is inhabited by both silver and black arowanas. The silver arowana occurs in both black- and whitewater habitats, including flooded forests. Description This fish has relatively large scales, a long body, and a tapered tail, with the dorsal and anal fins extending all the way to the small caudal fin, with which they are nearly fused. Its maximum total length is typically considered to be , but there are reports of individuals up to . Unlike the black ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scleropages
''Scleropages'' is a genus of fish in the family Osteoglossidae found in Asia and Australia. All of these species are carnivorous and have great jumping ability. These species are highly valued as aquarium fish, particularly by those from Asian cultures. In 2003, a study redescribed several naturally occurring color varieties of ''S. formosus'' into four separate species. The majority of researchers dispute these redescriptions, arguing that the published data are insufficient to justify recognizing more than one Southeast Asian species of ''Scleropages'' and that divergent haplotypes used to distinguish the color strains into isolated species were found within a single color strain, contradicting the findings. They are considered monotypic, consisting of closely related haplotypes based on color. The ancestor of the Australian arowanas: ''S. jardinii'' and ''S. leichardti'', diverged from the ancestor of the Asian arowanas about 140 million years ago, during the Early Cretaceous p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osteoglossum
''Osteoglossum'' is a genus of fish in the family Osteoglossidae. They reach about in length and are restricted to freshwater habitats in tropical South America. These predators mostly feed on arthropods like insects and spiders, but may also take small vertebrates such as other fish, frogs, lizards, snakes, mice, bats and small birds. They jump up to out of the water to pick the prey off branches, tree trunks or foliage, which has earned them the local name "water monkeys". They are the largest fish in the world that catch most of their food out of water. When breeding, the male protects the eggs and young by carrying them in the mouth. They are sometimes kept in aquarium An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aq ...s, but they are predatory and require a very large tank. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joffrichthys
''Joffrichthys'' is a genus of prehistoric bony fish. This North American genus includes three species, ''J. symmetropterus'', ''J. tanyourus'' and ''J. triangulpterus''. The last species is known from the Paleocene of the Sentinel Butte Formation of North Dakota. See also * Prehistoric fish * List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College Albert A. List College of Jewish Studies, known simply as List College, is the undergraduate school of the J ... References Prehistoric ray-finned fish genera Osteoglossidae {{osteoglossiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osteoglossomorpha
Osteoglossomorpha is a group of bony fish in the Teleostei. Notable members A notable member is the arapaima (''Arapaima gigas''), the largest freshwater fish in South America and one of the largest bony fishes alive. Other notable members include the bizarre freshwater elephantfishes of family Mormyridae. Systematics Most osteoglossomorph lineages are extinct today. Only the somewhat diverse "bone-tongues" (Osteoglossiformes) and two species of mooneyes (Hiodontiformes) remain. The Ichthyodectiform fishes from the Jurassic and Cretaceous periods were once classified as osteoglossomorphs, but are now generally recognized as stem teleosts. Basal and ''incertae sedis'' (Extinct) * Genus †'' Paralycoptera'' Chang & Chou, 1977 * Genus †''Jinanichthys'' Ma & Sun 1988 Liaoxiichthys.html"_;"title="'Liaoxiichthys">'Liaoxiichthys''_Su_1992*_Genus_?†''Kokuraichthys.html" ;"title="Liaoxiichthys">'Liaoxiichthys'' Su 1992">Liaoxiichthys.html" ;"title="'Liaoxiichthys">'Liaoxiic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
