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Hypsagoninae
Hypsagoninae is a subfamily of marine ray-finned fishes belonging to the Family (biology), family Agonidae, part of the sculpin Superfamily (biology), superfamily Cottoidea. These fishes are found in the North Pacific Ocean. Taxonomy Hypsagoninae was first proposed as a taxonomic grouping in 1861 by the American zoologist Theodore Gill. Some workers have regarded the genus Agonomalus as synonymous with Hypsagonus and place the two remaining genera in the subfamily Percidinae which was also named by Gill in 1897. However, most authorities recognise the three genera and place them in the subfamily Hypsagoninae. The 5th edition of ''Fishes of the World'' classifies the Hypsagoninae within the family Agonidae, part of the superfamily Cottoidea, the sculpins. Genera Hypsagoninae contains following 3 genera: Characteristics Hypsagoninae sculpins typically have deep, laterally compressed bodies with a terminal mouth which has nearly equal jaws, The rear edge of the orbit is convex. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agonidae
Agonidae is a family of small, bottom-dwelling, cold-water marine fish. Common names for members of this family include poachers, Irish lords, sea ravens, alligatorfishes, starsnouts, hooknoses, and rockheads. They are notable for having elongated bodies covered by scales modified into bony plates, and for using their large pectoral fins to move in short bursts. The family includes about 59 species in some 25 genera, some of which are quite widespread. The pelvic fins are nearly vestigial, typically consisting of one small spine and a few rays. The swim bladder is not present. At in length, the dragon poacher (''Percis japonica'') is the largest member of the family, while '' Bothragonus occidentalis'' is long as an adult; most are in the 20–30 cm range. Agonidae species generally feed on small crustaceans and marine worms found on the bottom. Some species camouflage Camouflage is the use of any combination of materials, coloration, or illumination for conce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sculpin
A sculpin is a type of fish that belongs to the superfamily Cottoidea in the order Perciformes.Kane, E. A. and T. E. Higham. (2012)Life in the flow lane: differences in pectoral fin morphology suggest transitions in station-holding demand across species of marine sculpin. ''Zoology'' (Jena) 115(4), 223–32. As of 2006, this superfamily contains 7 families, 94 genera, and 387 species. Sculpins occur in many types of habitat, including ocean and freshwater zones. They live in rivers, submarine canyons, kelp forests, and shallow littoral habitat types, such as tidepools. Families and subfamilies Families include: * Jordaniidae Starks, 1895 * Rhamphocottidae Jordan & Gilbert, 1883 * Scorpaenichthyidae Jordan & Evermann, 1898 * Agonidae Swainson, 1839 ** Hemilepidontinae Jordan & Evermann, 1898 ** Hemitripterinae Gill, 1856 ** Bothragoninae Lindberg, 1971 ** Hypsagoninae Gill, 1861 ** Anoplagoninae Gill, 1861 ** Brachyopsinae Jordan & Evermann, 1898 ** Agoninae Swai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsal Fin
A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous. They are found in most fish, in mammals such as whales, and in extinct ancient marine reptiles such as ichthyosaurs. Most 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 whales to identify individuals in the field. The bones or cartilages that support the dorsal fin in fish are called pterygiophores. Functions The main purpose of the dorsal fin is usually to stabilize the animal against rolling and to assist in sudden turns. Some species have further adapted their dorsal fins to other uses. The sunfish uses the dorsal fin (and the anal fin Fins are moving appendages protruding from the body of fish that interact with water to ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chukchi Sea
The Chukchi Sea (, ), sometimes referred to as the Chuuk Sea, Chukotsk Sea or the Sea of Chukotsk, is a marginal sea of the Arctic Ocean. It is bounded on the west by the Long Strait, off Wrangel Island, and in the east by Point Barrow, Alaska, beyond which lies the Beaufort Sea. The Bering Strait forms its southernmost limit and connects it to the Bering Sea and the Pacific Ocean. The principal port on the Chukchi Sea is Uelen in Russia. The International Date Line crosses the Chukchi Sea from northwest to southeast. It is displaced eastwards to avoid Wrangel Island as well as the Chukotka Autonomous Okrug on the Russian mainland. Etymology In 1928, during hydrographic observations, the Norwegian polar explorer Harald Sverdrup discovered that the sea lying between Point Barrow and Wrangel Island was very different from the sea between the New Siberian Islands and Wrangel Island and therefore should be separated from the East Siberian Sea. It was decided to call the newly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dragon Poacher
The dragon poacher (''Percis japonica'') is a fish in the family Agonidae.''Percis japonica'' at www.fishbase.org. It was described by in 1769, originally under the genus '' Cottus''.Pallas, P. S., 1769 ef. 20848''Spicilegia Zoologica quibus novae imprimis et obscurae animalium species iconibus, descriptionibus atque commentariis illustrantur.'' Berolini, Gottl. August. Lange. v. 1 (fasc. 7): 1-42, Pls. 1-6. It is a [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Total Length
Fish measurement is the measuring of individual fish and various parts of their anatomies, for data used in many areas of ichthyology, including taxonomy and fishery biology. Overall length Standard length (SL) is the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. This measurement excludes the length of the caudal (tail) fin. Total length (TL) is the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. It is a straight-line measure, not measured over the curve of the body. Standard length measurements are used with Teleostei (most bony fish), while total length measurements are used with Myxini (hagfish), Petromyzontiformes ( lampreys) and usually Elasmobranchii (shark Sharks are a group of elasmobranch cartilaginous fish characterized by a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kelp Poacher
The kelp poacher (''Agonomalus mozinoi'') is a fish in the family Agonidae.''Agonomalus mozinoi'' at www.fishbase.org. It was described by Norman Joseph Wilimovsky and in 1979, originally under the genus '' Hypsagonus''.Wilimovsky, N. J. and D. E. Wilson, 1979 (1 May) ef. 8767''A new species of Agonidae, Agonomalus mozinoi, from the west coast of ... [...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] |
Theodore Gill
Theodore Nicholas Gill (March 21, 1837 – September 25, 1914) was an American ichthyologist, mammalogist, malacologist, and librarian. Career Born and educated in New York City under private tutors, Gill early showed interest in natural history. He was associated with J. Carson Brevoort in the arrangement of the latter's entomological and ichthyological collections before going to Washington, DC, in 1863 to work at the Smithsonian Institution. He catalogued mammals, fishes, and mollusks most particularly, although he maintained proficiency in other orders of animals. He was librarian at the Smithsonian and also senior assistant to the Library of Congress. He was elected as a member of the American Philosophical Society in 1867. Gill was professor of zoology at George Washington University. He was also a member of the Megatherium Club at the Smithsonian Institution in Washington, DC. Fellow members frequently mocked him for his vanity. He was president of the American Asso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giovanni Antonio Scopoli
Giovanni Antonio Scopoli (sometimes Latinisation of names, Latinized as Johannes Antonius Scopolius) (3 June 1723 – 8 May 1788) was an Italians, Italian physician and natural history, naturalist. His biographer Otto Guglia named him the "first anational European" and the "Carl Linnaeus, Linnaeus of the Habsburg monarchy, Austrian Empire". Biography Scopoli was born at Cavalese in the Val di Fiemme, belonging to the Prince-Bishopric of Trent, Bishopric of Trent (today's Trentino), son of Francesco Antonio, military commissioner, and Claudia Caterina Gramola (1699-1791), a painter from a patrician family from Trentino. He obtained a degree in medicine at University of Innsbruck, and practised as a doctor in Cavalese and Venice.Newton, Alfred 1881. ''Scopoli's ornithological papers.'' The Willoughby SocietyScanned version/ref> Much of his time was spent in the Alps, Plant collecting, collecting plants and Entomology, insects, of which he made outstanding collections. He spent two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
