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Exocoetus Peruvianus
''Exocoetus peruvianus'', commonly known as the Peruvian flyingfish, is a species of ray-finned fish endemic to the tropical southeast Pacific Ocean in the waters off Peru and Ecuador. Description The species can reach a length of 152 mm (6 in) to 198 mm (7.8 in). Like most flying fish, ''E. peruivanus'' exhibits countershading with the body colored iridescent blue from above and silvery white from below. The pectoral fin is light brown while the dorsal fin is light gray. The caudal fin is also gray and both the anal fin and ventral fins are non-pigmented. The species has very few teeth if any and are rarely spaced when present. The osteological character of ''E. peruivanus'' is very similar to that of ''Exocoetus obtusirostris.'' However, in this species, the posterolateral process of cleithrum head reaches far past the scapular orifice. Juveniles are typically 34 mm (1.3 in) to 78 mm (3 in) and humpbacked. They have a steep upper profile with the antedorsal distance being larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikolai Vasilyevich Parin
Nikolai Vasilyevich Parin (21 November 1932 – 18 April 2012) was a Soviet and Russian ichthyologist, specializing in oceanic pelagic fish. He headed the Laboratory of Oceanic Ichthyofauna at the RAS Institute of Oceanology in Moscow, where he ended his career as a Professor after more than fifty-seven years. In his career, he described more than 150 new taxa of fish and participated in 20 major oceanic expeditions. Thirty-six species of fish are named in his honour. Personal life Parin was born in Perm on 21 November 1932. His father was Vasily Vasilevich Parin, who was the founder and first Secretary General of the USSR Academy of Medicine but later was made politically suspect due to a trip to the United States and a dispute with Trofim Lysenko. After the death of Stalin in 1953 and rise of Khrushchev, his father was rehabilitated and played a key medical role in the Soviet space program. Because of his father's imprisonment, Parin could not study physics at Moscow Stat ... [...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] |
Fish Of Ecuador
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Most fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equator
The equator is a circle of latitude, about in circumference, that divides Earth into the Northern and Southern hemispheres. It is an imaginary line located at 0 degrees latitude, halfway between the North and South poles. The term can also be used for any other celestial body that is roughly spherical. In spatial (3D) geometry, as applied in astronomy, the equator of a rotating spheroid (such as a planet) is the parallel (circle of latitude) at which latitude is defined to be 0°. It is an imaginary line on the spheroid, equidistant from its poles, dividing it into northern and southern hemispheres. In other words, it is the intersection of the spheroid with the plane perpendicular to its axis of rotation and midway between its geographical poles. On and near the equator (on Earth), noontime sunlight appears almost directly overhead (no more than about 23° from the zenith) every day, year-round. Consequently, the equator has a rather stable daytime temperature throug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exocoetus
''Exocoetus'' is a genus of flying fishes. It is a bony fish. The body is covered with cycloid scales. The mouth is wide, and the jaws bear teeth. It is a marine fish. The tail has hypobatic fins as the ventral lobe. Species Five species in this genus are recognized: * ''Exocoetus gibbosus'' Parin & Shakhovskoy, 2000 (oceanic flyingfish) * ''Exocoetus monocirrhus'' J. Richardson, 1846 (barbel flyingfish) * ''Exocoetus obtusirostris'' Günther, 1866 (oceanic two-wing flyingfish) * ''Exocoetus peruvianus'' Parin & Shakhovskoy, 2000 (Peruvian flyingfish) * ''Exocoetus volitans'' Linnaeus, 1758 Events January–March * January 1 – Swedish biologist Carl Linnaeus (Carl von Linné) publishes in Stockholm the first volume (''Animalia'') of the 10th edition of Systema Naturae, 10th edition of ''Systema Naturae'', the sta ... (tropical two-wing flyingfish) References Exocoetidae Taxa named by Carl Linnaeus {{Beloniformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbels
In fish anatomy and turtle anatomy, a barbel is a slender, whiskerlike sensory organ near the mouth. Fish that have barbels include the catfish, the carp, the goatfish, the hagfish, the sturgeon, the zebrafish, the black dragonfish and some species of shark such as the sawshark. Barbels house the taste buds of such fish and are used to search for food in murky water. The word "barbel" comes from the Middle Latin ''barbula'', for "little beard." Barbels are sometimes erroneously referred to as '' barbs'', which are found in bird feathers for flight. Barbels may be located in a variety of locations on the head of a fish. "Maxillary barbels" refers to barbels on either side of the mouth. Barbels may also be nasal, extending from the nostrils. Also, barbels are often mandibular or mental, being located on the chin. In fish, barbels can take the form of small, fleshy protrusions or long, cylindrical shaped extensions of the head of a fish. The cylindrical barbel shapes are buil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleithrum
The cleithrum (plural cleithra) is a membrane bone which first appears as part of the skeleton in primitive bony fish, where it runs vertically along the scapula. Its name is derived from Greek κλειθρον = " key (lock)", by analogy with "clavicle" from Latin ''clavicula'' = "little key". In modern fishes, the cleithrum is a large bone that extends upwards from the base of the pectoral fin and anchors to the cranium above the gills, forming the posterior edge of the gill chamber. The bone has scientific use as a means to determine the age of fishes. The lobe-finned fishes share this arrangement. In the earliest amphibians however, the cleithrum/clavicle complex came free of the skull roof, allowing for a movable neck. The cleithrum disappeared early in the evolution of reptiles, and in amniotes is very small or absent. It has been argued based on position, muscle connectivity, and developmental origin that the nuchal element of the turtle carapace A carapace is a Dors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exocoetus Obtusirostris
''Exocoetus obtusirostris'', commonly known as the oceanic two-wing flyingfish or the blunt-snouted flyingfish, is a species of ray-finned fish native to the tropical and subtropical western Atlantic Ocean. It has the ability to glide above the surface of the water to escape from predators. Description The species can reach a length of . It is similar in appearance to the tropical two-wing flyingfish (''Exocoetus volitans'') which shares much of its range, but differs in certain characteristics; the head is quite blunt, the forehead sloping steeply down in front of the eyes; the pectoral fins extend as far as the base of the caudal fin; the origin of the anal fin is slightly in front of the origin of the dorsal fin, and the dorsal fin is colourless. Both these two-winged species have very small pelvic fins, whereas other so called four-winged species of flyingfish have pelvic fins that extend at least as far as the origin of the anal fin. Like all flying-fishes, ''E. obtusirostri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventral
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek language, Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and anatomical axis, anatomical axes. The meaning of terms that are used can change depending on whether an organism is bipedal or quadrupedal. Additionally, for some animals such as invertebrates, some terms may not have any meaning at all; for example, an animal that is radially symmetrical will have no anterior surface, but can still have a description that a part is close to the middle ("proximal") or further from the middle ("distal"). International organisations have determined vocabularies that are often used as standard vocabular ... [...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] |
Ilya Borisovich Shakhovskoy
Ilya, Iliya, Ilia, Ilja, or Ilija (russian: Илья́, Il'ja, , or russian: Илия́, Ilija, ; uk, Ілля́, Illia, ; be, Ілья́, Iĺja ) is the East Slavic form of the male Hebrew name Eliyahu (Eliahu), meaning "My God is Yahu/ Jah." It comes from the Byzantine Greek pronunciation of the vocative (Ilía) of the Greek Elias (Ηλίας, Ilías). It is pronounced with stress on the second syllable. The diminutive form is Iliusha or Iliushen'ka. The Russian patronymic for a son of Ilya is " Ilyich", and a daughter is "Ilyinichna". People with the name Real people *Ilya (Archbishop of Novgorod), 12th-century Russian Orthodox cleric and saint * Ilya Ivanovitch Alekseyev (1772–1830), commander of the Russian Imperial Army *Ilya Borok (born 1993), Russian jiujitsu fighter *Ilya Bryzgalov (born 1980), Russian ice hockey goalie *Ilya Ehrenburg (1891–1967), Russian writer and Soviet cultural ambassador *Ilya Glazunov (1930–2017), Russian painter *Ilya Gringolts (born 1982 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsal Fin
A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through convergent evolution they have independently evolved external superficial fish-like body plans adapted to their marine environments, including most numerously fish, but also mammals such as cetaceans (whales, dolphins, and porpoises), and even extinct ancient marine reptiles such as various known species of ichthyosaurs. Most species have only one dorsal fin, but some have two or three. Wildlife biologists often use the distinctive nicks and wear patterns which develop on the dorsal fins of large cetaceans to identify individuals in the field. The bony or cartilaginous bones that support the base of the dorsal fin in fish are called ''pterygiophores''. Functions The main purpose of the dorsal fin is to stabilize the animal against rollin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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