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Spondyliosoma
''Spondyliosoma'' is a genus of marine ray-finned fish belonging to the family Sparidae, which includes the seabreams and porgies. The genus contains two species, one, the black seabream, from the eastern Atlantic Ocean and the other, the steentjie seabream, from the western Indian Ocean. Taxonomy ''Spondyliosoma'' was first proposed as a genus in 1849 by the Danish zoologist Theodore Cantor with ''Sparus cantharus'' being the type species. Cantor proposed the new name to replace Georges Cuvier's ''Cantharus'' which was preoccupied by '' Cantharus'' Röding, 1798 in Mollusca and by ''Cantharus'' Monfort, 1808 in Foraminifera. The type species of Cuvier's ''Cantharus'' was ''Sparus cantharus'' by monotypy, Linnaeus had described ''S. cantharus'' in the 10th edition of ''Systema Naturae'' published in 1758, with its type locality given as the Mediterranean Sea. This genus in the family Sparidae within the order Spariformes by the 5th edition of ''Fishes of the World''. Some auth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spondyliosoma Emarginatum
''Spondyliosoma emarginatum'', the steentjie seabream, is a species of marine ray-finned fish belonging to the family Sparidae, which includes the seabreams and porgies. This species is found in the southeastern Atlantic Ocean and the southwestern Indian Ocean off South Africa and maybe Madagascar. Taxonomy ''Spondyliosoma emarginatum'' was first formally described as ''Cantharus emerginatus'' in 1830 by the French zoologist Achille Valenciennes with its type locality given as the Cape of Good Hope in South Africa. The 5th edition of ''Fishes of the World'' classifies the genus ''Spondyliosoma'' 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 ''Spondyliosoma emarginatum'' is classified in the genus ''Spondyliosoma'' which combines ''spondylus'', meaning "spindl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spondyliosoma Cantharus
The black seabream (''Spondyliosoma cantharus'') is a species of Sparidae fishes. They are recognisable by their oval compressed body and jaws containing 4-6 rows of slender teeth which are larger at the front. They are silvery in colour with blue and pink tinges and broken longitudinal gold lines. They can reach a maximum size of 60 cm in length. They live in northern Europe and in the Mediterranean, usually found on the inshore shelf at depths varying from 5 to 300 m. They are usually found in schools feeding on seaweeds and invertebrates. They breed in February to May leaving eggs in the demersal zone. Black seabream are protogynous meaning females have the ability to change to males. References External links Page at Fish Base black seabream Fish of Africa Fish of Europe Fauna of Macaronesia Fish of the Mediterranean Sea black seabream The black seabream (''Spondyliosoma cantharus'') is a species of Sparidae fishes. They are recognisable by their oval com ... [...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 hallu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodore Cantor
Theodore Edward (Theodor Edvard) Cantor (1809–1860) was a Danish physician, zoologist and botanist. Born to a Danish Jewish family, his mother was a sister of Nathaniel Wallich. Cantor worked for the British East India Company, and made natural history collections in Penang and Malacca. Cantor was the first Western scientist to describe the Siamese fighting fish. In the scientific field of herpetology he described many new species of reptiles and amphibians. Species first described by Cantor include '' Bungarus bungaroides'' (1839), ''Bungarus lividus'' (1839), ''Channa argus'' (1842), '' Elaphe rufodorsata'' (1842), ''Euprepiophis mandarinus'' (1842), '' Hippocampus comes'' (1850), '' Lycodon effraenis'' (1847), ''Misgurnus anguillicaudatus'' (1842), ''Naja atra'' (1842), ''Oligodon albocinctus'' (1839), '' Oligodon cyclurus'' (1839), '' Ophiophagus hannah'' (1836), '' Oreocryptophis porphyracea'' (1839), ''Pareas monticola'' (1839), ''Protobothrops mucrosquamatus'' (1839), ''P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mediterranean Sea
The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the east by the Levant. The Sea has played a central role in the history of Western civilization. Geological evidence indicates that around 5.9 million years ago, the Mediterranean was cut off from the Atlantic and was partly or completely desiccated over a period of some 600,000 years during the Messinian salinity crisis before being refilled by the Zanclean flood about 5.3 million years ago. The Mediterranean Sea covers an area of about , representing 0.7% of the global ocean surface, but its connection to the Atlantic via the Strait of Gibraltar—the narrow strait that connects the Atlantic Ocean to the Mediterranean Sea and separates the Iberian Peninsula in Europe from Morocco in Africa—is only wide. The Mediterranean Sea e ... [...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 Honol ... [...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 Grahamstown (n ... [...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] |
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] |
Molar (tooth)
The molars or molar teeth are large, flat teeth at the back of the mouth. They are more developed in mammals. They are used primarily to grind food during chewing. The name ''molar'' derives from Latin, ''molaris dens'', meaning "millstone tooth", from ''mola'', millstone and ''dens'', tooth. Molars show a great deal of diversity in size and shape across mammal groups. The third molar of humans is sometimes vestigial. Human anatomy In humans, the molar teeth have either four or five cusps. Adult humans have 12 molars, in four groups of three at the back of the mouth. The third, rearmost molar in each group is called a wisdom tooth. It is the last tooth to appear, breaking through the front of the gum at about the age of 20, although this varies from individual to individual. Race can also affect the age at which this occurs, with statistical variations between groups. In some cases, it may not even erupt at all. The human mouth contains upper (maxillary) and lower (mandib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incisor
Incisors (from Latin ''incidere'', "to cut") are the front teeth present in most mammals. They are located in the premaxilla above and on the mandible below. Humans have a total of eight (two on each side, top and bottom). Opossums have 18, whereas armadillos have none. Structure Adult humans normally have eight incisors, two of each type. The types of incisor are: * maxillary central incisor (upper jaw, closest to the center of the lips) * maxillary lateral incisor (upper jaw, beside the maxillary central incisor) * mandibular central incisor (lower jaw, closest to the center of the lips) * mandibular lateral incisor (lower jaw, beside the mandibular central incisor) Children with a full set of deciduous teeth (primary teeth) also have eight incisors, named the same way as in permanent teeth. Young children may have from zero to eight incisors depending on the stage of their tooth eruption and tooth development. Typically, the mandibular central incisors erupt first, followed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achille Valenciennes
Achille Valenciennes (9 August 1794 – 13 April 1865) was a French zoologist. Valenciennes was born in Paris, and studied under Georges Cuvier. His study of parasitic worms in humans made an important contribution to the study of parasitology. He also carried out diverse systematic classifications, linking fossil and current species. He worked with Cuvier on the 22-volume "'' Histoire Naturelle des Poissons''" (Natural History of Fish) (1828–1848), carrying on alone after Cuvier died in 1832. In 1832, he succeeded Henri Marie Ducrotay de Blainville (1777–1850) as chair of ''Histoire naturelle des mollusques, des vers et des zoophytes'' at the Muséum national d'histoire naturelle. Early in his career, he was given the task of classifying animals described by Alexander von Humboldt (1769–1859) during his travels in the American tropics (1799 to 1803), and a lasting friendship was established between the two men. He is the binomial authority for many species of fish, such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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