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Surgeon Fish
Acanthuridae are the family (biology), family of surgeonfishes, tangs, and Naso (fish), unicornfishes. The family includes about 86 Extant taxon, extant species of ocean, marine fish living in tropical seas, usually around coral reefs. Many of the species are brightly colored and popular in aquarium, aquaria. Morphology The distinctive characteristic of the family is that they have scalpel-like Fish scale#Modified scales, modified scales, one or more on either side of the Caudal peduncle, peduncle of the tail. The spines are dangerously sharp and may seriously injure anyone who carelessly handles such a fish. The dorsal fin, dorsal, anal fin, anal, and caudal fins are large, extending for most of the length of the body. The mouths are small and have a single row of teeth adapted to grazing on algae. Surgeonfishes sometimes feed as solitary individuals, but they often travel and feed in schools. Feeding in schools may be a mechanism for overwhelming the highly aggressive defens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sohal Surgeonfish
The sohal surgeonfish (''Acanthurus sohal'') or sohal tang, is an endemic from the Red Sea and Persian Gulf. A single record was reported in 2017 from the eastern Mediterranean Sea, a likely result of aquarium release. It can grow up to 16 in (40 cm) in the wild. It is a valued aquarium fish. Its striking blue and white horizontal stripes have made it for many the 'poster fish' for the Red Sea reef and Persian Gulf environment. Like other tangs, the sohal tang is compressed laterally, making it extremely maneuverable and fast along the reef. It has a horizontal, blade-like spine along the base of its tail on both sides, which folds into the fish, pointing anteriorly towards the head. During defense and aggression, tangs flick the spine at other fish or intruders, causing physical harm. The surgeonfish are named for this scalpel A scalpel, lancet, or bistoury is a small and extremely sharp bladed instrument used for surgery, anatomical dissection, podiatry and various ar ... [...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] |
Naseus
''Naseus'' is an extinct genus of surgeonfishes from the Lutetian-aged Monte Bolca Lagerstätte A Lagerstätte (, from ''Lager'' 'storage, lair' '' Stätte'' 'place'; plural ''Lagerstätten'') is a sedimentary deposit that exhibits extraordinary fossils with exceptional preservation—sometimes including preserved soft tissues. These for .... Species Species within this genus include: * ''Naseus nuchalis'' Agassiz 1842 * ''Naseus rectifrons'' Agassiz 1842 References Prehistoric ray-finned fish genera {{paleo-bony-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tylerichthys
''Tylerichthys'' is an extinct genus of prehistoric surgeonfish that lived in a coral reef during the Lutetian epoch of what is now Monte Bolca, Italy. See also * Prehistoric fish * List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College Albert A. List College of Jewish Studies, known simply as List College, is the undergraduate school of the J ... References Eocene fish Acanthuridae Fossils of Italy Prehistoric ray-finned fish genera Fossil taxa described in 1981 {{acanthuridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope Carbon-13, 13C in the atmosphere was exceptionally low in comparison with the more common isotope Carbon-12, 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Popigai impact structure, Siberia and in what is now ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whitemargin Unicornfish
The whitemargin unicornfish (''Naso annulatus'') is a tropical fish found throughout the Indo-Pacific. It can reach a length of 100 cm, making it one of the largest members of the family Acanthuridae. The species itself exists beyond the Pakistan coast, it can be found throughout different regions of the ocean, including Hawai’i and the Red Sea Description ''Naso annulatus'' also known as Whitemargin unicorn fish are one of many surgeon fish in the sea. The species normally range from a brownish-white color to grey/olive in color. They can be distinguished by the sharp cone like-shap "nasal" protruding out of their foreahead. The tail is black surrounded by a white margin. It is often found in large schools off tropical reefs, and it feeds on zooplankton. The fish has two scutes on the left side. These are found on the caudal peduncle near the tail. Habitat & Biology White-margin Unicorn fish can be located in the shallow parts of the ocean, such as the coral reefs. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanthurus MH-MCZArtwork ARC 209-030
''Acanthurus'' is a genus of fish in the family Acanthuridae found in the Atlantic, Indian and Pacific Ocean. They are found in tropical oceans, especially near coral reefs, with most species in the Indo-Pacific but a few are found in the Atlantic Ocean. As other members of the family, they have a pair of spines, one on either side of the base of the tail which are dangerously sharp. Species There are currently 41 recognized species in this genus: * ''Acanthurus achilles'' G. Shaw, 1803 (Achilles surgeonfish) * '' Acanthurus albimento'' K. E. Carpenter, J. T. Williams & M. D. Santos, 2017 (White-chin surgeonfish)Carpenter, K.E., Williams, J.T. & Santos, M.D. (2017)''Acanthurus albimento'', a new species of surgeonfish (Acanthuriformes: Acanthuridae) from northeastern Luzon, Philippines, with comments on zoogeography.''Journal of the Ocean Science Foundation, 25: 33–46.'' * '' Acanthurus albipectoralis'' G. R. Allen & Ayling, 1987 (White-fin surgeonfish) * '' Acanthurus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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