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Frostfish
The cutlassfishes are about 45 species of predatory ray-finned fish in the family Trichiuridae of the order Scombriformes found in seas throughout the world. Fish of this family are long, slender, and generally steely blue or silver in colour, giving rise to their name. They have reduced or absent pelvic and caudal fins, giving them an eel-like appearance, and large fang-like teeth. Some of the species are known as scabbardfishes or hairtails; others are called frostfishes because they appear in late autumn and early winter, around the time of the first frosts. The earliest known remains of cutlassfish are isolated teeth assigned to ''Eutrichiurides'' from the Early Paleocene of Morocco, the United States, and Angola, although their affinities are subject to question. The earliest known body fossil of a cutlassfish is a specimen tentatively assigned to ''Anenchelum'' from the Early Eocene of Italy. Classification This list of species follows FishBase: * Subfamily Aphanopidina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benthodesmus
''Benthodesmus'' is a genus of fish in the family Trichiuridae. There are at least eleven species in this genus, which are known as frostfish. These are not to be confused with ''Microgadus tomcod'' and ''Lepidopus caudatus'' also known as frostfish. Species The World Register of Marine Species lists the following species: * ''Benthodesmus elongatus'', Clarke, 1879 (Elongate frostfish) * '' Benthodesmus macrophthalmus'', Parin & Becker, 1970 (Bigeye frostfish) * '' Benthodesmus neglectus'', Parin, 1976 (Neglected frostfish) * ''Benthodesmus oligoradiatus'', Parin & Becker, 1970 (Sparse-rayed frostfish) * ''Benthodesmus pacificus'', Parin & Becker, 1970 (North Pacific frostfish) * ''Benthodesmus papua'', Parin, 1978 (Papuan frostfish) * ''Benthodesmus simonyi'', Steindachner, 1891 (Simony's frostfish) * ''Benthodesmus suluensis'', Parin, 1976 (Philippine frostfish) * ''Benthodesmus tenuis'', Günther, 1877 (Slender frostfish) * ''Benthodesmus tuckeri'', Parin & Becker, 1970 (Tu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Scabbardfish
The silver scabbardfish (''Lepidopus caudatus''), also known as the frostfish or beltfish is a benthopelagic cutlassfish of the family Trichiuridae found throughout the temperate seas of the world. It grows to over in length. Behaviour ''Lepidopus caudatus'' is known to strand itself in winter months, likely due to being caught in currents when the fish migrate closer to shore for spawning. In a human context ''Lepidopus caudatus'' is a traditional food for the Māori people of New Zealand, known by the name . The fish was not typically caught, but eaten as a supplementary food when schools washed ashore, especially common around Moeraki in Otago Otago (, ; ) is a regions of New Zealand, region of New Zealand located in the southern half of the South Island and administered by the Otago Regional Council. It has an area of approximately , making it the country's second largest local go .... Māori traditionally believed that strandings were caused by the fish chasing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepidopus
''Lepidopus'' is a genus of cutlassfishes. Fossil record These fishes lived from the Oligocene to Quaternary (from 33.9 to 1.806 million years ago). Fossils have been found in Italy, Cyprus, Greece, Azerbaijan, the Czech Republic, Germany and Hungary. Species Species within this genus include: * ''Lepidopus altifrons'', Parin & Collette, 1993 (Crested scabbardfish) * ''Lepidopus calcar'', Parin & Mikhailin, 1982 (Hawaiian ridge scabbardfish) * ''Lepidopus caudatus'', (Bengt Anders Euphrasén, Euphrasen, 1788) (Silver scabbardfish) * ''Lepidopus dubius'', Parin & Mikhailin, 1981 (Doubtful scabbardfish) * ''Lepidopus fitchi '', Rosenblatt & Wilson, 1987 (Fitch's scabbardfish) * ''Lepidopus manis'', Rosenblatt & Wilson, 1987 (Ghost scabbardfish) Bibliography * D'Onghia, G., F. Mastrototaro i P. Maiorano, 2000. Biology of silver scabbard fish, Lepidopus caudatus (Trichiuridae), from the Ionian Sea (Eastern-Central Mediterranean). Cybium 24(3):249-262. * Fritzsche, R.A., 1982. Ost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scombriformes
Scombriformes, also known as Pelagia and Pelagiaria, is an order of ray-finned fish within the clade Percomorpha. It contains 287 extant species in 16 families, most of which were previously classified under the suborders Scombroidei and Stromateoidei of the order Perciformes. The earliest known scombriform is the scombrid '' Landanichthys'' from the Middle Paleocene of Angola. Taxonomy Scombriformes includes the following families: * Suborder Stromateoidei ** Family Amarsipidae (amarsipa) ** Family Centrolophidae (medusafishes) ** Family Nomeidae (driftfishes) ** Family Tetragonuridae (squaretails) ** Family Ariommatidae (ariommas) ** Family Stromateidae (butterfishes) * Suborder Scombroidei ** Family Pomatomidae (bluefishes) ** Family Icosteidae (ragfish) ** Family Arripidae (Australasian salmon (kahawai)) ** Family Chiasmodontidae (swallowers) ** Family Scombridae *** Subfamily Gasterochismatinae (butterfly kingfish) *** Subfamily Scombrinae (mackerels, bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tentoriceps
''Tentoriceps'' is a monotypic genus of cutlassfish, family Trichiuridae, from the Indian and Pacific Oceans. The sole species is ''Tentoriceps cristatus''. Its common name is crested hairtail. Distribution ''Tentoriceps cristatus'' has Indo-West Pacific distribution: it is found in the Indian Ocean (including the Red Sea) and in the Western Pacific Ocean, between the Tasman Sea and southern Japan. It is a benthopelagic to pelagic The pelagic zone consists of the water column of the open ocean and can be further divided into regions by depth. The word ''pelagic'' is derived . The pelagic zone can be thought of as an imaginary cylinder or water column between the sur ... species that occurs in coastal waters deep, but avoids areas of low salinity. Description Typical for cutlassfishes, ''Tentoriceps cristatus'' has extremely elongate and strongly compressed, ribbon-like body, tapering to a point. The dorsal profile of head is evenly convex. It grows to a maximum length ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Eocene
In the geologic timescale the Ypresian is the oldest age (geology), age or lowest stage (stratigraphy), stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by the Eocene Lutetian Age. The Ypresian is consistent with the Lower Eocene (Early Eocene). Events The Ypresian Age begins during the throes of the Paleocene–Eocene Thermal Maximum (PETM). The Fur Formation in Denmark, the Messel shales in Germany, the Oise amber of France and Cambay amber of India are of this age. The Eocene Okanagan Highlands are an uplands subtropical to temperate series of lakes from the Ypresian. The Ypresian is additionally marked by another warming event called the Early Eocene Climatic Optimum (EECO). The EECO is the longest sustained warming event in the Cenozoic record, lasting about 2–3 million years between 53 and 50 Ma. The interval is characterized by low oxygen-18 isotopes, high levels of atmospheric pCO2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ray-finned Fish
Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of skin supported by radially extended thin bony spines called '' lepidotrichia'', as opposed to the bulkier, fleshy lobed fins of the 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 between these fins and the internal skeleton (e.g., pelvic and pectoral girdles). The vast majority of actinopterygians are teleosts. By species count, they dominate the subphylum Vertebrata, and constitute nearly 99% of the over 30,000 extant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelvic Fin
Pelvic fins or ventral fins are paired fins located on the ventral (belly) surface of fish, and are the lower of the only two sets of paired fins (the other being the laterally positioned pectoral fins). The pelvic fins are homologous to the hindlimbs of tetrapods, which evolved from lobe-finned fish during the Middle Devonian. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudal Fin
Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported only by muscles. Fish fins are distinctive anatomical features with varying structures among different clades: in ray-finned fish (Actinopterygii), fins are mainly composed of bony spines or rays covered by a thin stretch of scaleless skin; in lobe-finned fish (Sarcopterygii) such as coelacanths and lungfish, fins are short rays based around a muscular central bud supported by jointed bones; in cartilaginous fish (Chondrichthyes) and jawless fish (Agnatha), fins are fleshy " flippers" supported by a cartilaginous skeleton. Fins at different locations of the fish body serve different purposes, and are divided into two groups: the midsagittal ''unpaired fins'' and the more laterally located ''paired fins''. Unpaired fins are predominan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ypresian
In the geologic timescale the Ypresian is the oldest age (geology), age or lowest stage (stratigraphy), stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by the Eocene Lutetian Age. The Ypresian is consistent with the Lower Eocene (Early Eocene). Events The Ypresian Age begins during the throes of the Paleocene–Eocene Thermal Maximum (PETM). The Fur Formation in Denmark, the Messel shales in Germany, the Oise amber of France and Cambay amber of India are of this age. The Eocene Okanagan Highlands are an uplands subtropical to temperate series of lakes from the Ypresian. The Ypresian is additionally marked by another warming event called the Early Eocene Climatic Optimum (EECO). The EECO is the longest sustained warming event in the Cenozoic record, lasting about 2–3 million years between 53 and 50 Ma. The interval is characterized by low oxygen-18 isotopes, high levels of atmospheric pCO2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danian
The Danian is the oldest age or lowest stage of the Paleocene Epoch or Series, of the Paleogene Period or System, and of the Cenozoic Era or Erathem. The beginning of the Danian (and the end of the preceding Maastrichtian) is at the Cretaceous–Paleogene extinction event . The age ended , being followed by the Selandian. Stratigraphic definitions The Danian was introduced in scientific literature by German-Swiss geologist Pierre Jean Édouard Desor in 1847 following a study of fossils found in France and Denmark.Danien Den Store Danske Encyklopædi He identified this stage in deposits from [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FishBase
FishBase is a global species database of fish species (specifically finfish). It is the largest and most extensively accessed online database on adult finfish on the web.Marine Fellow: Rainer Froese ''Pew Environment Group''. Over time it has "evolved into a dynamic and versatile ecological tool" that is widely cited in scholarly publications. FishBase provides comprehensive species data, including information on , geographical distribution, biometrics and morpholo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
