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Nannostomus Anduzei
''Nannostomus anduzei'' (common name: Anduzi's pencilfish) is a freshwater species of fish belonging to the genus '' Nannostomus'' in the characin family Lebiasinidae. It is native to Venezuela and northern Brazil, particularly the upper Orinoco and Rio Ererê, a tributary of the Rio Negro. The adults grow to a maximum length of only 16 mm, making them one of the smallest pencilfish. Other common names include miniature pencilfish, miniature nannostomus, and Anduzi's nannostomus. Distribution ''Nannostomus anduzei'' is restricted to the Amazonian region of the South American continent and has only been formally reported from two localities in the north of that area. The first, and site of discovery, was 20 km north of the small Venezuelan town of Puerto Ayacucho in a small lagoon, in the upper regions of the Rio Orinoco, at 5° 50' N, 67° 30' W. The second site was some 700 km to the southeast, in the Lago Caatinga, off the Rio Ererê, a tributary of the Rio Neg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Justa M
Justa may refer to: * Justa (rebel), also known as Justasa, Samaritan rebel * JUSTA, Yugoslav airline company from the 1940s *A name attributed to the gentile, Syro-Phoenician or Canaanite woman whose daughter was healed by Jesus according to Mark 7:24-30 *Saint Justa of Cagliari (d. 130) - see Justa, Justina and Henedina *Saint Justa (3rd century) - see Justa and Rufina *Justa Grata Honoria * Santa Justa (other), multiple uses See also * Justa stove *Justus *Justina (other) Justina and Justine are anglicised versions of the Latin name ''Iustina'', feminine of ''Iustinus'', a derivative of ''Iustus'', meaning ''fair'' or ''just''. For the masculine version of the name, see Justin (name). Translations *Russian: Ус ... * Justas, a Lithuanian masculine given name {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nannostomus Minimus
''Nannostomus minimus'', (from the Greek: ''nanos'' = small, and the Latin ''stoma'' = relating to the mouth; from the Latin: ''minimus'' = of the smallest size), commonly known as the least pencilfish, is a freshwater species of fish belonging to the characin family Lebiasinidae. It is restricted to Guyana, where it has been reported from the Potaro and Mazaruni River The Mazaruni River is a tributary of the Essequibo River in northern Guyana. Its source is in the remote western forests of the Pakaraima Mountains and its confluence with the Cuyuni River is near Bartica. As it descends from the Guiana Highlands ...s. ''N. minimus'' reaches a length of 23 mm. When described in 1909, it was the smallest of the known pencilfishes; that distinction has since passed to ''N. anduzei''. References Lebiasinidae Taxa named by Carl H. Eigenm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1987
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Stanley Howard Weitzman
In biology, a taxon (back-formation from ''taxonomy''; plural 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. 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 set forth in Carl Linnaeus's system in '' Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nano Aquarium
Nano aquariums are aquariums with the emphasis on small scale inhabitants inside smaller sized aquariums. They can be either freshwater nano aquariums or saltwater nano aquariums. Nano fish species are chosen from any smaller sized species of tropical fish. Other possible inhabitants are freshwater and seawater shrimp Shrimp are crustaceans (a form of shellfish) with elongated bodies and a primarily swimming mode of locomotion – most commonly Caridea and Dendrobranchiata of the decapod order, although some crustaceans outside of this order are refer ...s. Any plants for a nano aquarium also have to be of the smaller species. The marine nano aquarium is more difficult to maintain than the nano freshwater aquarium. See also * Nano reefs References External links Aquariums {{zoology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nannostomus Trifasciatus
''Nannostomus trifasciatus'', (from the Greek: ''nanos'' = small, and the Latin ''stomus'' = relating to the mouth; from the Latin: ''trifasciatus'' = three bands),"Exotic Aquarium Fishes" by Dr. William T. Innes, Innes Publishing Co, Philadelphia, 1935 commonly known as the three-lined or three-stripe pencilfish, is a freshwater species of fish belonging to the characin family Lebiasinidae. They are popular in the aquarium trade due to their small size, beautiful color pattern, and relative hardiness. Taxonomy Steindachner first described the species in 1876, making it one of the first four species in the genus to be described. As a result of the broad distribution of ''N. trifasciatus'', the species is polymorphic and, over the years, some of these color morphs have been erroneously described as separate species. ''Poecilobrycon erythrurus'' and ''Poecilobrycon vittatus'', two such examples, are now known to be junior synonyms. Distribution and habitat ''N. trifasciatus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melatonin
Melatonin is a natural product found in plants and animals. It is primarily known in animals as a hormone released by the pineal gland in the brain at night, and has long been associated with control of the sleep–wake cycle. In vertebrates, melatonin is involved in synchronizing circadian rhythms, including sleep–wake timing and blood pressure regulation, and in control of seasonal rhythmicity including reproduction, fattening, moulting and hibernation. Many of its effects are through activation of the melatonin receptors, while others are due to its role as an antioxidant. In plants, it functions to defend against oxidative stress. It is also present in various foods. Melatonin was discovered in 1958. In addition to its role as a natural hormone, melatonin is used as a dietary supplement and medication in the treatment of sleep disorders such as insomnia and circadian rhythm sleep disorders; for information on melatonin as a supplement and medication, see the melatoni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biofilm
A biofilm comprises any syntrophic consortium of microorganisms in which cells stick to each other and often also to a surface. These adherent cells become embedded within a slimy extracellular matrix that is composed of extracellular polymeric substances (EPSs). The cells within the biofilm produce the EPS components, which are typically a polymeric conglomeration of extracellular polysaccharides, proteins, lipids and DNA. Because they have three-dimensional structure and represent a community lifestyle for microorganisms, they have been metaphorically described as "cities for microbes". Biofilms may form on living or non-living surfaces and can be prevalent in natural, industrial, and hospital settings. They may constitute a microbiome or be a portion of it. The microbial cells growing in a biofilm are physiologically distinct from planktonic cells of the same organism, which, by contrast, are single cells that may float or swim in a liquid medium. Biofilms can form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amazon Rainforest
The Amazon rainforest, Amazon jungle or ; es, Selva amazónica, , or usually ; french: Forêt amazonienne; nl, Amazoneregenwoud. In English, the names are sometimes capitalized further, as Amazon Rainforest, Amazon Forest, or Amazon Jungle. or Amazonia is a Tropical and subtropical moist broadleaf forests, moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompasses , of which are covered by the rainforest. This region includes territory belonging to nine nations and 3,344 formally acknowledged Indigenous territory (Brazil), indigenous territories. The majority of the forest is contained Amazônia Legal, within Brazil, with 60% of the rainforest, followed by Peruvian Amazonia, Peru with 13%, Amazon natural region, Colombia with 10%, and with minor amounts in Bolivia, Ecuador, French Guiana, Guyana, Suriname, and Venezuela. Four nations have "Amazonas (other), Amazonas" as the name of one of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pablo J
Pablo is a Spanish form of the name Paul. People *Pablo Alborán, Spanish singer *Pablo Aimar, Argentine footballer *Pablo Armero, Colombian footballer * Pablo Bartholomew, Indian photojournalist *Pablo Brandán, Argentine footballer *Pablo Brenes, Costa Rican footballer *Pablo Alborán, Spanish singer-songwriter *Pablo Casals, Catalan cello virtuoso *Pablo Couñago, Spanish footballer *Pablo Cuevas, Uruguayan tennis player *Pablo Eisenberg (born 1932), American scholar, social justice advocate, and tennis player *Pablo Escobar, Colombian drug lord *Pablo Iglesias Turrión, Spanish politician *Pablo Francisco, Chilean American comedian * Pablo Galdames, Chilean footballer *Pablo P. Garcia, Filipino politician *Pablo Hernández Domínguez, Spanish footballer *Pablo Ibañez, Spanish footballer *Pablo Iglesias Simón, Spanish theatre director, sound designer and playwright *Pablo Lombi, Argentine field hockey player *Pablo Darío López, Argentine footballer *Pablo Iglesias Posse, Span ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Premaxillary
The premaxilla (or praemaxilla) is one of a pair of small cranial bones at the very tip of the upper jaw of many animals, usually, but not always, bearing teeth. In humans, they are fused with the maxilla. The "premaxilla" of therian mammal has been usually termed as the incisive bone. Other terms used for this structure include premaxillary bone or ''os premaxillare'', intermaxillary bone or ''os intermaxillare'', and Goethe's bone. Human anatomy In human anatomy, the premaxilla is referred to as the incisive bone (') and is the part of the maxilla which bears the incisor teeth, and encompasses the anterior nasal spine and alar region. In the nasal cavity, the premaxillary element projects higher than the maxillary element behind. The palatal portion of the premaxilla is a bony plate with a generally transverse orientation. The incisive foramen is bound anteriorly and laterally by the premaxilla and posteriorly by the palatine process of the maxilla. It is formed from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateral Line
The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells, known as hair cells, which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Lateral lines serve an important role in schooling behavior, predation, and orientation. Fish can use their lateral line system to follow the vortices produced by fleeing prey. Lateral lines are usually visible as faint lines of pores running lengthwise down each side, from the vicinity of the gill covers to the base of the tail. In some species, the receptive organs of the lateral line have been modified to function as electroreceptors, which are organs used to detect electrical impulses, and as such, these systems remain closely linked. Most amphibian larvae and some fully aquatic adult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
