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Ateleopodiformes
The jellynose fishes or tadpole fishes are the small order Ateleopodiformes. This group of ray-finned fish is monotypic, containing a single family Ateleopodidae. It has about a dozen species in four genera, but these enigmatic fishes are in need of taxonomic revision. The scientific name means "''Ateleopus''-shaped", from '' Ateleopus'' (the type genus) + the standard fish order suffix "-formes". It ultimately derives from Ancient Greek ''atelēs'' (ἀτελής, "imperfect") + ''pous'' (πούς, "foot") + Latin ''forma'' ("external form"), the Greek part in reference to the reduced pectoral and ventral fins of the jellynoses. Description and ecology Jellynoses are deep-water, bottom-dwelling, marine fishes. They are known from the Caribbean Sea, eastern Atlantic, the western and central Indopacific, and the Pacific coast of Central America.Olney (1998), Nelson (2006): p.213 Primarily known from mesopelagic waters, an unidentified species of '' Ateleopus'' was observed in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ateleopus
''Ateleopus'' is a genus of ray-finned fish in the jellynose family Ateleopodidae. It is the type genus of its family, and the order Ateleopodiformes. For some time, it was known as ''Podateles'', because ''Ateleopus'' had been used to replace the frog genus name ''Atelopus'', which was deemed to be a spelling error. This was mistaken, however, and the fish and frog genera reverted to their original names. This genus occurs in the fossil record since the mid-Miocene. Species There are currently 2 recognized species in this genus. * '' Ateleopus edentatus'' Kaga, 2016Kaga, T. (2016): A new jellynose, ''Ateleopus edentatus'', from the western Pacific Ocean (Teleostei: Ateleopodiformes: Ateleopodidae). ''Zootaxa, 4083 (4): 562–568.'' * '' Ateleopus japonicus'' Bleeker, 1854 (Pacific jellynose fish) Several other species have been described, but these are synonyms.Kaga, T., Van Oijen, M.J.P., Kubo, Y. & Kitagawa, E. (2015): Redescription of ''Ateleopus japonicus'' Bleeker 1853 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guentherus
''Guentherus'' is a genus of jellynose fishes, belonging to the Ateleopodidae family, with two recognized species: * ''Guentherus altivela'' Balthazar Osório, Osório, 1917 (jellynose, highfin tadpole fish) * ''Guentherus katoi'' Hiroshi Senou, Senou, Shinji Kuwayama, Kuwayama & Koichi Hirate, Hirate, 2008 The genus distinguishes itself from others in its family because of discrepancies in morphology. ''Guentherus'' has "3 free rays followed by 6–9 normal rays with membrane between them in the pelvic fins." Other genera in this family have "a single long filament or 1 relatively developed ray plus 0 to 3 rudimentary rays." Family: Ateleopodidae The family Ateleopodidae is made up of four genera and within that thirteen species: ''Ateleopus'', ''Ijimaia'', ''Parateleopus'' and ''Guentherus''. Ateleopodids are located primarily near tropical and subtropical waters; with ''Ateleopus'', ''Parateleopus'', and ''Guentherus'' located in the Pacific and ''Ijimaia'' located in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ijimaia
''Ijimaia'' is a genus of jellynose fishes, one of four in the order Ateleopodiformes. The genus occurs in the fossil record since the Middle Miocene.Brzobohatý, Rostislav, and Dirk Nolf. "Revision of the middle Badenian fish otoliths from the Carpathian Foredeep in Moravia (middle Miocene, Czech Republic)." ''Cybium'' 42.2 (2018): 143–16/ref> Species The currently recognized species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ... in this genus are: * '' Ijimaia antillarum'' Howell-Rivero, 1935 * '' Ijimaia dofleini'' , 1905 * '' Ijimaia fowleri'' Howell-Rivero, 1935 * '' Ijimaia loppei'' Roule, 1922 (Loppe's tadpole fish) * '' Ijimaia plicatellus'' ( C. H. Gilbert, 1905) (deepwater ateleopodid) References Ateleopodiformes Ray-finned fish genera {{Ateleopodif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parateleopus
''Parateleopus'' is a genus of jellynose fish in the family Ateleopodidae. There are two recognized species: * ''Parateleopus microstomus'' H. M. Smith & Radcliffe, 1912 * ''Parateleopus indicus'' Alcock, 1891 (Smallmouth jellynose) Species ''Parateleopus microstomus'' ''Parateleopus microstomus'' was first described in 1912, by Hugh McCormick Smith and Lewis Radcliffe. The species was described based on one specimen, the holotype, caught in the Philippines at . ''Parateleopus indicus'' ''Parateleopus indicus'' was originally described as ''Ateleopus indicus'' by Alfred William Alcock in 1891, in the Andaman Sea The Andaman Sea (historically also known as the Burma Sea) is a marginal sea of the northeastern Indian Ocean bounded by the coastlines of Myanmar and Thailand along the Gulf of Martaban and the west side of the Malay Peninsula, and separated f .... It was redescribed as a part of the ''Parateleopus'' genus in 2017. References Ateleopodiformes Fish of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep-water Ateleopid Fish
''Ijimaia plicatellus'' is a species of jellynose fish in the family Ateleopodidae. Their distribution is in the Eastern Central Pacific near Hawaii Hawaii ( ; ) is an island U.S. state, state of the United States, in the Pacific Ocean about southwest of the U.S. mainland. One of the two Non-contiguous United States, non-contiguous U.S. states (along with Alaska), it is the only sta ..., at depths from 265 to 500 meters. The species can reach up to 68 centimeters in length. References Fish described in 1905 Ateleopodiformes {{Ateleopodiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ateleopus Japonicus
The pacific jellynose fish (''Ateleopus japonicus'') (Shachiburi, 鯱振 in Japanese) is a species of jellynose fish in the family Ateleopodidae. It can grow up to a length of 95 cm, but is more commonly found at lengths of 35 cm. There is one other species in its genus. It feeds on prawns, and is harmless to humans. It is benthic, and lives at depths from 140 to 600 meters, but it may rise up to 100 meters at night, in areas like China, Japan, Malaysia, New Caledonia, Taiwan, and Vietnam in the Indo-Pacific. It is a rare fish to encounter, and its population seems to be stable, but it may be a bycatch Bycatch (or by-catch), in the fishing industry, is a fish or other marine species that is caught unintentionally while fishing for specific species or sizes of wildlife. Bycatch is either the wrong species, the wrong sex, or is undersized or juve ... in fisheries. References Ateleopodiformes Fish described in 1854 Fish of the Pacific Ocean Fish of the Indian Oce ... [...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] |
Hadal Zone
The hadal zone, also known as the hadopelagic zone, is the deep sea, deepest region of the ocean, lying within oceanic trenches. The hadal zone ranges from around below sea level, and exists in long, narrow, topographic V-shaped depressions. The cumulative area occupied by the 46 individual hadal marine habitat, habitats worldwide is less than 0.25% of the world's seabed, seafloor, yet trenches account for over 40% of the ocean's depth range. Most hadal habitat is found in the Pacific Ocean, the deepest of the conventional oceanic divisions. Terminology and definition Historically, the hadal zone was not recognized as distinct from the abyssal zone, although the deepest sections were sometimes called "ultra-abyssal". During the early 1950s, the Danish ''Galathea expeditions#Second expedition, Galathea II'' and Soviet ''RV Vityaz (1939), Vityaz'' expeditions separately discovered a distinct shift in the life at depths of not recognized by the broad definition of the abyssal zon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mariana Trench
The Mariana Trench is an oceanic trench located in the western Pacific Ocean, about east of the Mariana Islands; it is the deep sea, deepest oceanic trench on Earth. It is crescent-shaped and measures about in length and in width. The maximum known depth is at the southern end of a small slot-shaped valley in its floor known as the Challenger Deep. The deepest point of the trench is more than farther from sea level than the peak of Mount Everest. At the bottom of the trench, the water column above exerts a pressure of , more than 1,071 times the standard atmospheric pressure at sea level. At this pressure, the density of water is increased by 4.96%. The temperature at the bottom is . In 2009, the Mariana Trench was established as a National monument (United States), US National Monument, Mariana Trench Marine National Monument. One-celled organisms called monothalamea have been found in the trench at a record depth of below the sea surface by researchers from the Scrip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pectoral Fin
Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish aquatic locomotion, swim. Apart from the tail or caudal fin, fish fins have no direct connection with the vertebral column, 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 bone, bony spine (zoology), spines or ray (fish fin anatomy), rays covered by a thin stretch of fish scale, scaleless skin; in lobe-finned fish (Sarcopterygii) such as coelacanths and lungfish, fins are short rays based around a muscular central limb bud, bud supported by appendicular skeleton, jointed bones; in cartilaginous fish (Chondrichthyes) and jawless fish (Agnatha), fins are fleshy "flipper (anatomy), flippers" supported by a cartilaginous skeleton. Fins at different locations of the fish body serve different purposes, and are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Trench
The Sunda Trench, earlier known as and sometimes still indicated as the Java Trench, is an oceanic trench located in the Indian Ocean near Sumatra, formed where the Australian- Capricorn plates subduct under a part of the Eurasian plate. It is long with a maximum depth of 7,290 metres (23,920 feet). Its maximum depth is the deepest point in the Indian Ocean. The trench stretches from the Lesser Sunda Islands past Java, around the southern coast of Sumatra to the Andaman Islands, and forms the boundary between the Indo-Australian plate and Eurasian plate (more specifically, Sunda plate). The trench is considered to be part of the Alpide belt as well as one of oceanic trenches around the northern edges of the Australian plate. In 2005, scientists found evidence that the 2004 earthquake activity in the area of the Java Trench could lead to further catastrophic shifting within a relatively short period, perhaps less than a decade. This threat has resulted in international agree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesopelagic Zone
The mesopelagic zone (Greek μέσον, middle), also known as the middle pelagic or twilight zone, is the part of the pelagic zone that lies between the photic epipelagic and the aphotic bathypelagic zones. It is defined by light, and begins at the depth where only 1% of incident light reaches and ends where there is no light; the depths of this zone are between approximately below the ocean surface. The mesopelagic zone occupies about 60% of the planet's surface and about 20% of the ocean's volume, amounting to a large part of the total biosphere. It hosts a diverse biological community that includes bristlemouths, blobfish, bioluminescent jellyfish, giant squid, and myriad other unique organisms adapted to live in a low-light environment. It has long captivated the imagination of scientists, artists and writers; deep sea creatures are prominent in popular culture. Physical conditions The mesopelagic zone includes the region of sharp changes in temperature, salinity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
