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Atherion
''Atherion'' is a small genus of old world silverside, silversides, known as the pricklenose silversides. It is the only genus in the Family (biology), family Atherionidae. Other authorities classify this as a monogeneric subfamily, Atherioninae, of the Atherinidae, while others include it within the subfamily Atherinomorinae. They have an Indo-Pacific distribution. Characteristics The species within ''Atherion'' are characterised by having rough, sharkskin-like denticles around the mouth and in other places on the head. The origin of the first dorsal fin is to the rear of the pelvic fin tip. The first dorsal fin has 3–6 spines while the second dorsal fin has a single spine and 8–13 soft rays. The anal fin also has a single spine and has 13–17 soft rays. Along the midlateral line they have a count of between 40 and 44 scales and they are small fish which grow to a maximum length of . Species The currently recognized species in this genus are: * ''Atherion africanum'' James ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atherion Elymus
''Atherion elymus'', the bearded silverside or pickleface hardyhead, is a species of Silverside (fish), silverside from the Family (biology), family Atherionidae. It is found in the western Pacific Ocean. Description ''Atherion elymus'' has an elongated, compressed body with a small mouth in which the upper jaw does not extend as far as the front edge of the eye. The head has a number of rows of denticles or small spines. Its anus sits immediately in front of the origin of the anal fin. The colouration is greenish gray on the back and whitish on the underside with a wide silvery band along the flanks which extends to the caudal fin. Small dark or black spots are normally scattered along the lower part of the flanks. They grow to a maximum Fish measurement, standard length of around . Distribution ''Atherion elymus'' occurs in the western Pacific Ocean from Japan in the north south to northern Queensland and east as far as Fiji. Habitat and biology ''Atherion elymus'' is a speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atherion
''Atherion'' is a small genus of old world silverside, silversides, known as the pricklenose silversides. It is the only genus in the Family (biology), family Atherionidae. Other authorities classify this as a monogeneric subfamily, Atherioninae, of the Atherinidae, while others include it within the subfamily Atherinomorinae. They have an Indo-Pacific distribution. Characteristics The species within ''Atherion'' are characterised by having rough, sharkskin-like denticles around the mouth and in other places on the head. The origin of the first dorsal fin is to the rear of the pelvic fin tip. The first dorsal fin has 3–6 spines while the second dorsal fin has a single spine and 8–13 soft rays. The anal fin also has a single spine and has 13–17 soft rays. Along the midlateral line they have a count of between 40 and 44 scales and they are small fish which grow to a maximum length of . Species The currently recognized species in this genus are: * ''Atherion africanum'' James ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atherion Maccullochi
McCulloch's hardyhead (''Atherion maccullochi'') is a species of silverside from the family Atherionidae. This species occurs off the coasts of Australia. It was described by David Starr Jordan and Carl Leavitt Hubbs in 1919 from a type locality of Lord Howe Island and the specific name honours the Australian ichthyologist Allan Riverstone McCulloch (1885-1925), who was Curator of Fishes at the Australian Museum and who provided Jordan and Hubbs with the type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * .... References {{Taxonbar, From=Q2551076 Atherion Taxa named by David Starr Jordan Taxa named by Carl Leavitt Hubbs Fish described in 1919 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atherion Africanum
The pricklenose silverside (''Atherion africanum'') is a species of silverside from the family Atherionidae. It is found in the western Indian Ocean from India to KwaZulu Natal in South Africa. It is a prey species for many commercially caught larger fish and may be used as bait by fishermen, usually caught at depths of less than . This species was described in 1965 by James Leonard Brierley Smith from a type locality of Inhaca Island, Mozambique. It is distinguished from similar species of silverside within its range by the rough, shagreen Shagreen is a type of rawhide consisting of rough untanned skin, historically from a horse's or onager's back, or from shark or ray. Etymology The word derives from the French ' and is related to Italian and Venetian ''sagrin'', deriv ...-like skin around its snout. References {{Taxonbar, From=Q2663319 Atherion Fish described in 1965 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old World Silverside
The Old World silversides are a family, Atherinidae, of fish in the order Atheriniformes. Atherinidae are abundant and considered bony fish (teleost) that are widespread globally, living in rivers, estuaries, and coastal waters. They occur worldwide in tropical and temperate waters. About two-thirds of the species are marine, and the remainder live in fresh water. The 74 species are in 13 genera. The genus ''Craterocephalus'' is the most diverse with 25 species. Four genera are monotypic. Silversides are relatively small with most being less than in length, with several not attaining lengths of more than . The body is generally elongated. Distinctive characters include two dorsal fins widely separated, with the first consisting of flexible spines and the second having one spine followed by soft rays, while the anal fin has one spine on the leading edge followed by soft rays. The pectoral fins tend to be high, and there is no lateral line. On the flanks is a broad, silvery band. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atheriniformes
The Atheriniformes, also known as the silversides, are an order of ray-finned fishes that includes the Old & New World silversides, the rainbowfishes, and several less-familiar families, including the unusual Phallostethidae. The order includes at least 354 species. They are found worldwide in tropical and temperate marine and freshwater environments. Description Atheriniformes are generally elongated and silvery in colour, although exceptions do exist. They are typically small fish, with the largest being the Argentinian silverside, with a head-body length of , but possibly up to 82 cm (32 in). The smallest species, such as the Bangkok minnow, reach only in adult length. Members of the order usually have two dorsal fins, the first with flexible spines, and an anal fin with one spine at the front. The lateral line is typically weak or absent. Atheriniform larvae share several characteristics; the gut is unusually short, a single row of melanophores occurs along the ... [...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] |
Carl Leavitt Hubbs
Carl Leavitt Hubbs (October 19, 1894 – June 30, 1979) was an American ichthyologist. Biography Early life Carl Leavitt Hubbs was born in Williams, Arizona, to Charles Leavitt and Elizabeth () Hubbs. His father had a wide variety of jobs (farmer, iron mine owner, newspaper owner). The family moved several times before settling in San Diego where he got his first taste of natural history. After his parents divorced in 1907, he lived with his mother, who opened a private school in Redondo Beach, California. His maternal grandmother Jane Goble Goss, one of the first female doctors, showed Hubbs how to harvest shellfish and other sea creatures. One of his teachers, impressed by Hubbs's abilities in science, recommended that he study chemistry at the University of Berkeley. The family moved once more to Los Angeles. In Los Angeles, George Bliss Culver, one of the many volunteers of David Starr Jordan, encouraged Hubbs to abandon his study of birds and instead to study fish, part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Smith (ichthyologist)
James Leonard Brierley Smith (26 September 1897 – 8 January 1968) was a South African ichthyologist, organic chemist, and university professor. He was the first to identify a taxidermied fish as a coelacanth, at the time thought to be long extinct. Early life Born in Graaff-Reinet, 26 September 1897, Smith was the elder of two sons of Joseph Smith and his wife, Emily Ann Beck. Educated at country schools at Noupoort, De Aar, and Aliwal North, he finally matriculated in 1914 from the Diocesan College, Rondebosch. He obtained a Bachelor of Arts degree in chemistry from the University of the Cape of Good Hope in 1916 and a Master of Science degree in chemistry at Stellenbosch University in 1918. Smith went to the United Kingdom, where he received his PhD at Cambridge University in 1922. After returning to South Africa, he became senior lecturer and later an associate professor of organic chemistry at Rhodes University in Grahamstown. From 1922 to 1937, he was married to He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anal Fin
Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the 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 bony spines or rays covered by a thin stretch of scaleless skin; in lobe-finned fish ( Sarcopterygii) such as coelacanths and lungfish, fins are short rays based around a muscular central bud supported by jointed bones; in cartilaginous fish ( Chondrichthyes) and jawless fish ( Agnatha), fins are fleshy " flippers" supported by a cartilaginous skeleton. Fins at different locations of the fish body serve different purposes, and are divided into two groups: the midsagittal ''unpaired fins'' and the more laterally located ''paired fins''. Unpaired fins are pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonard Peter Schultz
Leonard Peter Schultz (1901–1986) was an American ichthyologist. Biography Schultz was born in 1901, at Albion, Michigan. He received education on ichthyology at Albion College, in which he got his bachelor's degree, in 1924. In 1926, he got his master's degree from the University of Michigan, and then in 1932 from the University of Washington. From 1928 till 1936, he taught at the College of Fisheries at University of Washington. He was appointed as an assistant curator at the Division of Fishes of the United States National Museum. During the same year he joined Smithsonian Institution, where he remained till retirement in 1968. In 1938 he became a curator of the Division. While in retirement, he continued to work as a Research Associate of the Division of Fishes. He was one of the scientists that was sent to work for the U.S. Navy, on Operation Crossroads, that was conducted at the Bikini Atoll in 1946. Aside from testing an atomic bomb during the operation, he also collect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
