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Ipnopidae
The Ipnopidae (deepsea tripod fishes) are a family of fishes in the order Aulopiformes. They are small, slender fishes, with maximum length ranging from about . They are found in temperate and tropical deep waters of the Atlantic, Indian Ocean, Indian, and Pacific Oceans. Abiotic factors, such as depth, temperature, dissolved oxygen concentration, pressure, and carbon concentration can all impact their distribution. A number of species, especially in the genus ''Bathypterois'', have elongated pectoral fin, pectoral and pelvic fins. In the case of the tripodfish, ''Bathypterois grallator'', these fins are three times as long as the body — up to a meter in length — and are used for standing on the sea floor. Ipnopids either have tiny eyes, or very large eyes that lack any lens (eye), lens; in either case they have very poor vision and are unable to form an image. Ipnopidae is a species of fish that have adapted to living in the deep. Their skeleton is flatter with reinforced bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathypterois
''Bathypterois'' is a genus of deepsea tripod fishes. They are a diverse genus that belong to the greater family Ipnopidae and order Aulopiformes. They are distinguished by having two elongated pelvic fins and an elongated caudal fin, which allow them to move and stand on the ocean floor, much like a tripod, hence the common name. ''Bathypterois'' are distributed worldwide with some particular species of the genus having specialized environmental niches, such as lower dissolved oxygen concentrations. ''Bathypterois'' have a reduced eye size, highly specified extended fins, and a mouth adapted to filter feeding. They are filter feeders whose main food source is benthopelagic planktonic calanoid copepods, but some variation is seen with maturity in secondary food sources. Bathypterois use their three elongated fins for a wide range of motion from landing to standing on the ocean floor to catching prey, for which these fins serve as specialized perceptory organs. ''Bathypterois'' ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ipnops
''Ipnops'' is a genus of deep-sea fish in the family Ipnopidae, which also includes the better-known tripodfish (''Bathypterois grallator The tripod fish or tripod spiderfish, ''Bathypterois grallator'', is a deep-sea benthic fish in the family Ipnopidae found at lower latitudes. It is now an iconic deep-sea fish, being observed and photographed by submersibles, using elongate ...''). ''Ipnops'' are small, slender fish that live close to the ocean floor in the bathyal and abyssal zones. The genus is notable for its unusual eyes. Species There are currently three recognized species in this genus: * ''Ipnops agassizii'' Samuel Garman, Garman, 1899 (grideye fish) * ''Ipnops meadi'' Jørgen G. Nielsen, J. G. Nielsen, 1966 * ''Ipnops murrayi'' Albert Günther, Günther, 1878 Distribution Specimens of ''I. murrayi'' and ''I. agassizi'' have been caught at depths of 1392–3475 m; ''I. murrayi'' occurs in the Atlantic Ocean while ''I. agassizi'' occurs in the Indo-Pacific regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aulopiformes
Aulopiformes is a diverse order (biology), order of Marine (ocean), marine ray-finned fish consisting of some 15 Extant taxon, extant and several prehistoric family (biology), families with about 45 genera and over 230 species. The common names grinners, lizardfishes and allies, or aulopiforms are sometimes used for this group. They are included in the superorder Cyclosquamata, though modern taxonomists consider this superorder to be unwarranted. Many Neontology, extant aulopiforms are deep-sea fishes, with some species recognized as being hermaphroditic, a number of which are able to Autogamy, self-fertilise. Some are benthic, but most are pelagic swimmers (nektonic). A clade of Aulopiformes, the suborder Enchodontoidei and its many constituent families, were dominant nektonic fish throughout much of the Late Cretaceous before the extinction of most of their members around the K–Pg event, with the Dercetidae surviving for some time in the Cenozoic. Taxonomy Past authors have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathypterois Grallator
The tripod fish or tripod spiderfish, ''Bathypterois grallator'', is a deep-sea benthic fish in the family Ipnopidae found at lower latitudes. It is now an iconic deep-sea fish, being observed and photographed by submersibles, using elongate fin rays of the tail and pelvic fins to stand on the ooze. ''B. grallator'' is hermaphroditic. Characteristics The tripodfish has long, bony rays that extend from the lower lobe of its tail fin and both pelvic fins. ''B. grallator'' is the largest member of its genus, commonly exceeding a standard length of and reaching total lengths of up to long. The tripodfish is often seen in its distinctive stance; standing on its three fin extensions (the namesake tripod) on the seabed, facing upstream with the antennae-like pectoral fin rays extended out, waiting for food. Even though the fins are presumably quite stiff to be able to support its weight, observations of swimming fish shows that their fins seem flexible; it is suggested that f ... [...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] |
Bathymicrops
''Bathymicrops'' is a genus of deepsea tripod fishes. Species There are currently four recognized species in this genus: * '' Bathymicrops belyaninae'' J. G. Nielsen & Merrett, 1992 * '' Bathymicrops brevianalis'' J. G. Nielsen, 1966 (Shortarse feelerfish) * '' Bathymicrops multispinis'' J. G. Nielsen & Merrett, 1992 * '' Bathymicrops regis'' Hjort & Koefoed, 1912 References Ipnopidae {{Aulopiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathytyphlops
''Bathytyphlops'' is a genus of deepsea tripod fishes known only from the eastern Atlantic Ocean. Species There are currently two recognized species in this genus: * '' Bathytyphlops marionae'' Mead, 1958 (Marion's spiderfish) * '' Bathytyphlops sewelli'' (Norman Norman or Normans may refer to: Ethnic and cultural identity * The Normans, a people partly descended from Norse Vikings who settled in the territory of Normandy in France in the 9th and 10th centuries ** People or things connected with the Norma ..., 1939) References Ipnopidae Taxa named by Orvar Nybelin {{Aulopiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lens (eye)
The lens, or crystalline lens, is a transparent biconvex structure in most land vertebrate eyes. Relatively long, thin fiber cells make up the majority of the lens. These cells vary in architecture and are arranged in concentric layers. New layers of cells are recruited from a thin epithelium at the front of the lens, just below the basement membrane surrounding the lens. As a result the vertebrate lens grows throughout life. The surrounding lens membrane referred to as the lens capsule also grows in a systematic way, ensuring the lens maintains an optically suitable shape in concert with the underlying fiber cells. Thousands of suspensory ligaments are embedded into the capsule at its largest diameter which suspend the lens within the eye. Most of these lens structures are derived from the epithelium of the embryo before birth. Along with the cornea, aqueous, and vitreous humours, the lens refracts light, focusing it onto the retina. In many land animals the shape of the lens c ... [...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] |
Indian Ocean
The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or approximately 20% of the water area of Earth#Surface, Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia (continent), Australia to the east. To the south it is bounded by the Southern Ocean or Antarctica, depending on the definition in use. The Indian Ocean has large marginal or regional seas, including the Andaman Sea, the Arabian Sea, the Bay of Bengal, and the Laccadive Sea. Geologically, the Indian Ocean is the youngest of the oceans, and it has distinct features such as narrow continental shelf, continental shelves. Its average depth is 3,741 m. It is the warmest ocean, with a significant impact on global climate due to its interaction with the atmosphere. Its waters are affected by the Indian Ocean Walker circulation, resulting in unique oceanic currents and upwelling patterns. The Indian Ocean is ecologically diverse, with important ecosystems such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
