|
Oplopomus Oplopomus
''Oplopomus oplopomus'', commonly known as the spinecheek goby, is a species of goby native to the Indo-Pacific region. They can grow to a maximum length of . They inhabit coral reefs. Distribution and habitat Spinecheek gobies are native to the Indian Ocean and western Pacific Ocean, occurring from East Africa to the Society Islands and as far north as the Yaeyama Islands, Japan. They inhabit coral reefs at depths of . Description The spinecheek goby grows to a maximum length of . It has an elongated, laterally compressed body. The mouth is slanted downwards, with the lower jaw protruding past the upper jaw. Teeth are present in both rows in multiple rows, with the teeth in the outermost row enlarged. Its lower jaw also contains a pair of curved canines. The eye is wider in diameter than the blunt snout. An open pore is present just behind the eye. Its head does not possess scales. Scales on the body are ctenoid. The first dorsal fin is elongated and separated from the sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oplopomus
''Oplopomus'' is a genus of gobies found in coral reefs of the Indo-Pacific region. It contains two species. Description ''Oplopomus'' is characterized by elongated bodies and compressed heads. They possess 24 to 30 ctenoid scales on the body, becoming cycloid on the nape before disappearing just behind the eyes. Their snouts are short and round, smaller than the diameter of the eyes. The lower jaw protrudes past the upper jaw, with a pair of canine teeth on each side. The dorsal fins are separated with six rays on the first. The ventral fins are joined by a bridge of skin (a frenum). The caudal fins are round. They can grow to a maximum length of . They superficially resemble members of the genus ''Acentrogobius'', but ''Oplopomus'' can be distinguished by having the first rays of both dorsal fins ending in a sharp point (pungent). Taxonomy The genus ''Oplomopus'' was first used by the German zoologist Christian Gottfried Ehrenberg for ''Oplopomus pulcher'' (a synonym o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achille Valenciennes
Achille Valenciennes (9 August 1794 – 13 April 1865) was a French zoologist. Valenciennes was born in Paris, and studied under Georges Cuvier. His study of parasitic worms in humans made an important contribution to the study of parasitology. He also carried out diverse systematic classifications, linking fossil and current species. He worked with Cuvier on the 22-volume "'' Histoire Naturelle des Poissons''" (Natural History of Fish) (1828–1848), carrying on alone after Cuvier died in 1832. In 1832, he succeeded Henri Marie Ducrotay de Blainville (1777–1850) as chair of ''Histoire naturelle des mollusques, des vers et des zoophytes'' at the Muséum national d'histoire naturelle. Early in his career, he was given the task of classifying animals described by Alexander von Humboldt (1769–1859) during his travels in the American tropics (1799 to 1803), and a lasting friendship was established between the two men. He is the binomial authority for many species of fish, such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anal Fin
Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as seen in sharks. Apart from the tail or caudal fin, fish fins have no direct connection with the spine and are supported only by muscles. Their principal function is to help the fish swim. Fins located in different places on the fish serve different purposes such as moving forward, turning, keeping an upright position or stopping. Most fish use fins when swimming, flying fish use pectoral fins for gliding, and frogfish use them for crawling. Fins can also be used for other purposes; male sharks and mosquitofish use a modified fin to deliver sperm, thresher sharks use their caudal fin to stun prey, reef stonefish have spines in their dorsal fins that inject venom, anglerfish use the first spine of their dorsal fin like a fishing rod to lu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samoan Language
Samoan ( or ; ) is a Polynesian language spoken by Samoans of the Samoan Islands. Administratively, the islands are split between the sovereign country of Samoa and the United States territory of American Samoa. It is an official language, alongside English, in both jurisdictions. It is widely spoken across the Pacific region, heavily so in New Zealand and also in Australia and the United States. Among the Polynesian languages, Samoan is the most widely spoken by number of native speakers. Samoan is spoken by approximately 260,000 people in the archipelago and with many Samoans living in diaspora in a number of countries, the total number of speakers worldwide was estimated at 510,000 in 2015. It is the third-most widely spoken language in New Zealand, where 2.2% of the population, 101,900 people, were able to speak it as of 2018. The language is notable for the phonological differences between formal and informal speech as well as a ceremonial form used in Samoan oratory. Cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tagalog Language
Tagalog (, ; ; '' Baybayin'': ) is an Austronesian language spoken as a first language by the ethnic Tagalog people, who make up a quarter of the population of the Philippines, and as a second language by the majority. Its standardized form, officially named ''Filipino'', is the national language of the Philippines, and is one of two official languages, alongside English. Tagalog is closely related to other Philippine languages, such as the Bikol languages, Ilocano, the Bisayan languages, Kapampangan, and Pangasinan, and more distantly to other Austronesian languages, such as the Formosan languages of Taiwan, Indonesian, Malay, Hawaiian, Māori, and Malagasy. Classification Tagalog is a Central Philippine language within the Austronesian language family. Being Malayo-Polynesian, it is related to other Austronesian languages, such as Malagasy, Javanese, Indonesian, Malay, Tetum (of Timor), and Yami (of Taiwan). It is closely related to the languages spoken in the Bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afrikaans Language
Afrikaans (, ) is a West Germanic languages, West Germanic language that evolved in the Dutch Cape Colony from the Dutch dialects, Dutch vernacular of Holland, Holland proper (i.e., the Hollandic dialect) used by Dutch, French, and German settlers and Slavery in South Africa, their enslaved people. Afrikaans gradually began to develop distinguishing characteristics during the course of the 18th century. Now spoken in South Africa, Namibia and (to a lesser extent) Botswana, Zambia, and Zimbabwe, estimates circa 2010 of the total number of Afrikaans speakers range between 15 and 23 million. Most linguists consider Afrikaans to be a partly creole language. An estimated 90 to 95% of the vocabulary is of Dutch origin with adopted words from other languages including German language, German and the Khoisan languages of Southern Africa. Differences between Afrikaans and Dutch, Differences with Dutch include a more analytic language, analytic-type Morphology (linguistics), morphology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoologist
Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological classification, classification, Ethology, habits, and distribution of all animals, both living and extinction, extinct, and how they interact with their ecosystems. The term is derived from Ancient Greek , ('animal'), and , ('knowledge', 'study'). Although humans have always been interested in the natural history of the animals they saw around them, and made use of this knowledge to domesticate certain species, the formal study of zoology can be said to have originated with Aristotle. He viewed animals as living organisms, studied their structure and development, and considered their adaptations to their surroundings and the function of their parts. The Greek physician Galen studied human anatomy and was one of the greatest surgeons of the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gobiidae
Gobiidae or gobies is a family of bony fish in the order Gobiiformes, one of the largest fish families comprising more than 2,000 species in more than 200 genera. Most of gobiid fish are relatively small, typically less than in length, and the family includes some of the smallest vertebrates in the world, such as '' Trimmatom nanus'' and ''Pandaka pygmaea'', ''Trimmatom nanus'' are under long when fully grown, then ''Pandaka pygmaea'' standard length are , maximum known standard length are . Some large gobies can reach over in length, but that is exceptional. Generally, they are benthic or bottom-dwellers. Although few are important as food fish for humans, they are of great significance as prey species for other commercially important fish such as cod, haddock, sea bass and flatfish. Several gobiids are also of interest as aquarium fish, such as the dartfish of the genus ''Ptereleotris''. Phylogenetic relationships of gobiids have been studied using molecular data. Descript ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudal Fin
Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as seen in sharks. Apart from the tail or caudal fin, fish fins have no direct connection with the spine and are supported only by muscles. Their principal function is to help the fish swim. Fins located in different places on the fish serve different purposes such as moving forward, turning, keeping an upright position or stopping. Most fish use fins when swimming, flying fish use pectoral fins for gliding, and frogfish use them for crawling. Fins can also be used for other purposes; male sharks and mosquitofish use a modified fin to deliver sperm, thresher sharks use their caudal fin to stun prey, reef stonefish have spines in their dorsal fins that inject venom, anglerfish use the first spine of their dorsal fin like a fishing rod to lu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventral Fin
Pelvic fins or ventral fins are paired fins located on the ventral surface of fish. The paired pelvic fins are homologous to the hindlimbs of tetrapods. Structure and function Structure In actinopterygians, the pelvic fin consists of two endochondrally-derived bony girdles attached to bony radials. Dermal fin rays (lepidotrichia) are positioned distally from the radials. There are three pairs of muscles each on the dorsal and ventral side of the pelvic fin girdle that abduct and adduct the fin from the body. Pelvic fin structures can be extremely specialized in actinopterygians. Gobiids and lumpsuckers modify their pelvic fins into a sucker disk that allow them to adhere to the substrate or climb structures, such as waterfalls. In priapiumfish, males have modified their pelvic structures into a spiny copulatory device that grasps the female during mating. File:Pelvic fin skeleton.png, Pelvic fin skeleton for ''Danio rerio'', zebrafish. File:Zuignap waarmee de zwartbekgron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.png "Click for more on -> Anal Fin")
.jpg "Click for more on -> Gobiidae")
