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Bigscale
Ridgeheads, also known as bigscales, are a family (Melamphaidae, from the Greek ''melanos'' lackand ''amphi'' y both sides of small, deep-sea stephanoberyciform fish. The family contains approximately 37 species in five genera; their distribution is worldwide, but ridgeheads are absent from the Arctic Ocean and Mediterranean Sea. Although the family is one of the most widespread and plentiful of deep-sea families, none of its members are of interest to commercial fishery. These fish are named for their large scales and pronounced cranial ridges, as well as for their typically dark brown to black coloration. Ridgeheads are the largest and most diverse family of their order. Description Typical of the Stephanoberyciformes, the melamphid body is robust, oblong, subcylindrical, and slightly compressed laterally. The head is large and scaleless, with its profile either bluntly rounded or with a sharp frontal angle; it is conspicuous for its prominent ridges, which are covered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scopelogadus Mizolepis Mizolepis
''Scopelogadus'' is a genus of ridgeheads. The generic name derives from the Greek σκόπελος (''skopelos'', " lanternfish") and γάδος (''gados'', "(cod) fish"). Species There are currently three recognized species in this genus: * ''Scopelogadus beanii'' ( Günther, 1887) (Bean's bigscale) * ''Scopelogadus mizolepis'' (Günther, 1878) ** ''Scopelogadus mizolepis bispinosus'' ( C. H. Gilbert, 1915) (Twospine bigscale) ** '' Scopelogadus mizolepis mizolepis'' (Günther, 1878) (Ragged bigscale) * ''Scopelogadus perplexus'' Kotyar, 2021Kotlyar, A.N. Revision of the Genus Scopelogadus (Melamphaidae). 3. S. bispinosus and S. perplexus sp. n.. J. Ichthyol. 61, 1–16 (2021). https://doi.org/10.1134/S0032945221010094 * ''Scopelogadus unispinis ''Scopelogadus'' is a genus of ridgeheads. The generic name derives from the Greek σκόπελος (''skopelos'', "lanternfish") and γάδος (''gados'', "(cod) fish"). Species There are currently three recognized species in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scopeloberyx
''Scopeloberyx'' is a genus of ridgeheads. Species There are currently nine recognized species in this genus: * ''Scopeloberyx bannikovi'' Kotlyar, 2004 * ''Scopeloberyx malayanus'' ( M. C. W. Weber, 1913) * ''Scopeloberyx maxillaris'' ( Garman, 1899) * ''Scopeloberyx microlepis'' ( Norman, 1937) (Southern bigscale) * ''Scopeloberyx opisthopterus'' ( A. E. Parr, 1933) * ''Scopeloberyx pequenoi'' Kotlyar, 2004 * ''Scopeloberyx robustus'' ( Günther, 1887) (Longjaw bigscale) * ''Scopeloberyx rossicus'' Kotlyar, 2004 * ''Scopeloberyx rubriventer ''Scopeloberyx'' is a genus of ridgeheads. Species There are currently nine recognized species in this genus: * '' Scopeloberyx bannikovi'' Kotlyar, 2004 * '' Scopeloberyx malayanus'' ( M. C. W. Weber, 1913) * ''Scopeloberyx maxillaris'' (Garma ...'' ( Koefoed, 1953) References Stephanoberyciformes {{Stephanoberyciformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scopelogadus
''Scopelogadus'' is a genus of ridgeheads. The generic name derives from the Greek σκόπελος (''skopelos'', " lanternfish") and γάδος (''gados'', "(cod) fish"). Species There are currently three recognized species in this genus: * ''Scopelogadus beanii'' ( Günther, 1887) (Bean's bigscale) * ''Scopelogadus mizolepis'' (Günther, 1878) ** ''Scopelogadus mizolepis bispinosus'' ( C. H. Gilbert, 1915) (Twospine bigscale) ** ''Scopelogadus mizolepis mizolepis'' (Günther, 1878) (Ragged bigscale) * ''Scopelogadus perplexus'' Kotyar, 2021Kotlyar, A.N. Revision of the Genus Scopelogadus (Melamphaidae). 3. S. bispinosus and S. perplexus sp. n.. J. Ichthyol. 61, 1–16 (2021). https://doi.org/10.1134/S0032945221010094 * ''Scopelogadus unispinis ''Scopelogadus'' is a genus of ridgeheads. The generic name derives from the Greek σκόπελος (''skopelos'', "lanternfish") and γάδος (''gados'', "(cod) fish"). Species There are currently three recognized species in thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order (biology)
Order ( la, wikt:ordo#Latin, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between Family_(biology), family and Class_(biology), class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palatine Bone
In anatomy, the palatine bones () are two irregular bones of the facial skeleton in many animal species, located above the uvula in the throat. Together with the maxillae, they comprise the hard palate. (''Palate'' is derived from the Latin ''palatum''.) Structure The palatine bones are situated at the back of the nasal cavity between the maxilla and the pterygoid process of the sphenoid bone. They contribute to the walls of three cavities: the floor and lateral walls of the nasal cavity, the roof of the mouth, and the floor of the orbits. They help to form the pterygopalatine and pterygoid fossae, and the inferior orbital fissures. Each palatine bone somewhat resembles the letter L, and consists of a horizontal plate, a perpendicular plate, and three projecting processes—the pyramidal process, which is directed backward and lateral from the junction of the two parts, and the orbital and sphenoidal processes, which surmount the vertical part, and are separated by a dee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vomer
The vomer (; lat, vomer, lit=ploughshare) is one of the unpaired facial bones of the skull. It is located in the midsagittal line, and articulates with the sphenoid, the ethmoid, the left and right palatine bones, and the left and right maxillary bones. The vomer forms the inferior part of the nasal septum in humans, with the superior part formed by the perpendicular plate of the ethmoid bone. The name is derived from the Latin word for a ploughshare and the shape of the bone. In humans The vomer is situated in the median plane, but its anterior portion is frequently bent to one side. It is thin, somewhat quadrilateral in shape, and forms the hinder and lower part of the nasal septum; it has two surfaces and four borders. The surfaces are marked by small furrows for blood vessels, and on each is the nasopalatine groove, which runs obliquely downward and forward, and lodges the nasopalatine nerve and vessels. Borders The ''superior border'', the thickest, presents a dee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tooth
A tooth ( : teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, tearing food, for defensive purposes, to intimidate other animals often including their own, or to carry prey or their young. The roots of teeth are covered by gums. Teeth are not made of bone, but rather of multiple tissues of varying density and hardness that originate from the embryonic germ layer, the ectoderm. The general structure of teeth is similar across the vertebrates, although there is considerable variation in their form and position. The teeth of mammals have deep roots, and this pattern is also found in some fish, and in crocodilians. In most teleost fish, however, the teeth are attached to the outer surface of the bone, while in lizards they are attached to the inner surface of the jaw by one side. In cartilaginous fish, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spine (zoology)
In a zoological context, spines are hard, needle-like anatomical structures found in both vertebrate and invertebrate species. The spines of most spiny mammals are modified hairs, with a spongy center covered in a thick, hard layer of keratin and a sharp, sometimes barbed tip. Occurrence Mammals Spines in mammals include the prickles of hedgehogs and among rodents, the quills of both New World and Old World porcupines as well as the prickly fur of spiny mice, spiny pocket mice and spiny rats. They are also found on afrotherian tenrecs, marsupial spiny bandicoots and on echidnas, of the monotremes. An ancient synapsid, '' Dimetrodon'', had extremely long spines on its backbone that were joined together with a web of skin that formed a sail-like structure. Many mammalian species, like cats and fossas, also have penile spines. The Mesozoic eutriconodont mammal ''Spinolestes'' already displayed spines similar to those of modern spiny mice. Fish Spines are found in the rays o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fangtooth
Fangtooths are beryciform fish of the family (biology), family Anoplogastridae (sometimes spelled "Anoplogasteridae") that live in the deep sea. The name is from the Greek language, Greek , meaning "unarmed", and (), meaning "stomach". With a circumglobal distribution in tropical and cold-temperate waters, the family contains only two very similar species in one genus, with no known close relatives. Species The currently recognized species in this genus are: * ''Anoplogaster brachycera'' Aleksandr Nicholaevich Kotlyar, Kotlyar, 1986 (shorthorn fangtooth) * ''Anoplogaster cornuta'' (Achille Valenciennes, Valenciennes, 1833) (common fangtooth) Description While named for their disproportionately large, fang-like teeth and unapproachable visage, fangtooths are actually quite small and harmless to humans: the larger of the two species, the common fangtooth, reaches a maximum length of just ; the shorthorn fangtooth is less than half this size though currently known only from juvenil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slimehead
Slimeheads, also known as roughies and redfish, are mostly small, exceptionally long-lived, deep-sea beryciform fish constituting the family Trachichthyidae (derived from the Greek ''trachys'' – "rough" and ''ichthys'' – "fish"). Found in temperate to tropical waters of the Atlantic, Indian, and Pacific Oceans, the family comprises about 50 species in eight genera. Slimeheads are named for the network of muciferous canals riddling their heads. The larger species – namely the orange roughy (''Hoplostethus atlanticus'') and Darwin's slimehead (''Gephyroberyx darwinii'') – are the target of extensive commercial fisheries off Australia and New Zealand. Many populations have already crashed, while others are showing signs of severe overfishing; due to slimeheads' slow rate of reproduction, the future viability of these fisheries has been put into question. Orange roughies are food fish and are marketed fresh and frozen, whereas Darwin's slimeheads are used for thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
