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Polyamblyodon
''Polyamblyodon'' is a genus of marin Actinopterygii, ray-finned fishes belonging to the Family (biology), family Sparidae, which includes the seabreams and porgies. The fishes in this genus are found in the Western Indian Ocean. Taxonomy ''Polyamblyodon'' was first proposed as a genus in 1935 by the English ichthyologist John Roxborough Norman with ''Pachymetopon germanum'' as its type species. ''P. germanum'' was first formally Species description, described in 1935 by the South African zoologist Keppel Harcourt Barnard with its Type locality (biology), type locality given as Durban in KwaZulu-Natal. This genus is placed in the family Sparidae within the Order (biology), order Spariformes by the 5th edition of ''Fishes of the World''. Some authorities classify this genus in the subfamily Boopsinae, but the 5th edition of Fishes of the World does not recognise subfamilies within the Sparidae. Etymology ''Polyambylodon'' is a compound of ''poly'', meaning "many" with ''amblys'', m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pachymetopon Germanum
''Polyamblyodon germanum'', the German seabream, is a species of marine Actinopterygii, ray-finned fish in the family (biology), family Sparidae, which includes the seabreams and porgies. This species is found in the southwestern Indian Ocean. Taxonomy ''Polyamblyodon germanum'' was first formally described as ''Pachymetopon germanum'' in 1934 by the South African zoologist Keppel Harcourt Barnard with its Type locality (biology), type locality given as Durban in KwaZulu-Natal. in 1935 John Roxborough Norman proposed ''Polyamblyodon'' as a new monospecific genus and designated ''Pachymetopon germanum'' as its type species. The genus ''Polyamblyodon'' is placed in the family Sparidae within the Order (biology), order Spariformes by the 5th edition of ''Fishes of the World''. Some authorities classify this genus in the subfamily Boopsinae, but the 5th edition of Fishes of the World does not recognise subfamilies within the Sparidae. Etymology ''Polyamblyodon germanum'' has the Spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyamblyodon Germanum
''Polyamblyodon germanum'', the German seabream, is a species of marine ray-finned fish in the family Sparidae, which includes the seabreams and porgies. This species is found in the southwestern Indian Ocean. Taxonomy ''Polyamblyodon germanum'' was first formally described as ''Pachymetopon germanum'' in 1934 by the South African zoologist Keppel Harcourt Barnard with its type locality given as Durban in KwaZulu-Natal. in 1935 John Roxborough Norman proposed ''Polyamblyodon'' as a new monospecific genus and designated ''Pachymetopon germanum'' as its type species. The genus ''Polyamblyodon'' is placed in the family Sparidae within the order Spariformes by the 5th edition of ''Fishes of the World''. Some authorities classify this genus in the subfamily Boopsinae, but the 5th edition of Fishes of the World does not recognise subfamilies within the Sparidae. Etymology ''Polyamblyodon germanum'' has the specific name ''germanum'' which was not explained by Barnard, it may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyamblyodon Gibbosum
''Polyamblyodon gibbosum'', the knife-back seabream or cristie, is a species of marine ray-finned fish belonging to the family Sparidae, which includes the seabreams and porgies. This species is endemic to the southwestern Indian Ocean. Taxonomy and etymology ''Polyamblyodon gibbosum'' was first formally described as ''Pachymetopon gibbosus'' in 1914 by the French ichthyologist Jacques Pellegrin with its type locality given as Fort-Dauphin in Madagascar. The genus ''Polyamblyodon'' is placed in the family Sparidae within the order Spariformes by the 5th edition of ''Fishes of the World''. Some authorities classify this genus in the subfamily Pagellinae, but the 5th edition of Fishes of the World does not recognise subfamilies within the Sparidae. The generic name ''Polyamblyodon'' is Greek for "many blunt tooth," while the specific name ''gibbosum'' is Latin for "humpbacked", an allusion to the hump in front of the dorsal fin, largest in adults. Description ''Polyambly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyamblyodon
''Polyamblyodon'' is a genus of marin Actinopterygii, ray-finned fishes belonging to the Family (biology), family Sparidae, which includes the seabreams and porgies. The fishes in this genus are found in the Western Indian Ocean. Taxonomy ''Polyamblyodon'' was first proposed as a genus in 1935 by the English ichthyologist John Roxborough Norman with ''Pachymetopon germanum'' as its type species. ''P. germanum'' was first formally Species description, described in 1935 by the South African zoologist Keppel Harcourt Barnard with its Type locality (biology), type locality given as Durban in KwaZulu-Natal. This genus is placed in the family Sparidae within the Order (biology), order Spariformes by the 5th edition of ''Fishes of the World''. Some authorities classify this genus in the subfamily Boopsinae, but the 5th edition of Fishes of the World does not recognise subfamilies within the Sparidae. Etymology ''Polyambylodon'' is a compound of ''poly'', meaning "many" with ''amblys'', m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sparidae
The Sparidae are a family of fish in the order Perciformes, commonly called sea breams and porgies. The sheepshead, scup, and red seabream are species in this family. Most sparids are deep-bodied compressed fish with a small mouth separated by a broad space from the eye, a single dorsal fin with strong spines and soft rays, a short anal fin, long pointed pectoral fins and rather large firmly attached scales. They are found in shallow temperate and tropical waters and are bottom-dwelling carnivores. There are hermaphrodites in the Sparidae. Protogyny and protandry appear sporadically through this lineage of fish. Simultaneous hermaphrodites and bi-directional hermaphrodites do not appear as much since Sparidae are found in shallower waters. Species of fish that express a hermaphroditic condition usually "lack a genetic hardwire", therefore ecological factors play a role in sex determination. Most species possess grinding, molar-like teeth. Eating the head is known to cause hal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Roxborough Norman
John Roxborough Norman (1898, Wandsworth, London – 26 May 1944, Berkhamsted, Hertfordshire) was an English ichthyologist. He started as a clerk in a bank. His lifetime affliction with rheumatic fever began during his military service during the First World War. He entered the British Museum in 1921 where he worked for Charles Tate Regan (1878-1943). From 1939 to 1944, he was in charge of the Natural History Museum at Tring as the Curator of Zoology. Norman was the author of, among others, ''A History of Fishes'' (1931) and ''A Draft Synopsis of the Orders, Families and Genera of Recent Fishes'' (1957). He was considered closer to Albert Günther Albert Karl Ludwig Gotthilf Günther FRS, also Albert Charles Lewis Gotthilf Günther (3 October 1830 – 1 February 1914), was a German-born British zoologist, ichthyologist, and herpetologist. Günther is ranked the second-most productive re ... (1830-1914) than to Regan. See also * :Taxa named by John Roxborough Norman Referenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fishes Of The World
''Fishes of the World'' by the American Ichthyology, ichthyologist Joseph S. Nelson (1937–2011) is a standard reference for fish systematics. Now in its fifth edition (2016), the work is a comprehensive overview of the diversity and classification of the 30,000-plus fish species known to science. The book begins with a general overview of ichthyology, although it is not self-contained. After a short section on Chordata and non-fish taxa, the work lists all known fish families in a systematic fashion. Each family (biology), family gets at least one paragraph, and usually a body outline drawing; large families have subfamilies and tribes described as well. Notable genera and species are mentioned, while the book generally does not deal with the species-level diversity. The complexities of the higher taxa are described succinctly, with many references for difficult points. The book does not involve color illustrations. The fourth edition was the first to incorporate the wide use o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Total Length
Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries 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. Simply put, 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 (sharks and rays), as well as some other fishes. Total leng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Ernest Randall
John Ernest "Jack" Randall (May 22, 1924 – April 26, 2020) was an American ichthyologist and a leading authority on coral reef fishes. Randall described over 800 species and authored 11 books and over 900 scientific papers and popular articles. He spent most of his career working in Hawaii. He died in April 2020 at the age of 95. Career John Ernest Randall was born in Los Angeles, California in May 1924, to John and Mildred (McKibben) Randall. In high school he acquired a love of marine fish after a visit to the tide pools of Palos Verdes and, after serving stateside in the Medical Corps of the U.S. Army during the post- D-Day years of WWII,John Randall bio, The Academy of Underwater Arts & Sciences. (http://www.auas-nogi.org/bio_randall_john.html) received his BA degree from the University of California, Los Angeles in 1950. In 1955 he earned his Ph.D in ichthyology from the University of Hawaii. After spending two years as a research associate at the Bishop Museum in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phil Heemstra
Phillip Clarence Heemstra (9 December 1941 – 29 August 2019) was an American-South African ichthyologist. He was born in Melrose Park, Illinois, United States as the son of Clarence William Heemstra and his wife, Lydia (born Epcke). He attended school in Ottawa, Illinois, and completed a B.Sc. Zoology in 1963 at the University of Illinois at Urbana, Illinois, as well as his MSc degree (1968) and doctorate (1974) in marine biology at the University of Miami in Miami, Florida. He moved to live in South Africa in 1978. At the time of his death, Heemstra was a curator emeritus of the South African Institute of Aquatic Biodiversity (SAIAB, formerly the J.L.B. Smith Institute of Ichthyology). He specialized in ichthyology and marine fish taxonomy. Career Heemstra was, among other things, a biologist at the marine laboratory of the U.S. Department of Natural Resources in Florida, and from 1978 to 2001 a curator of fish at J.L.B. Smith Institute of Ichthyology in Grahamsto ... [...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 ... [...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 r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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