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Ctenosciaena
''Ctenosciaena'' is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. These fishes are found in the Western Atlantic and southeastern Pacific Oceans. Taxonomy ''Ctenosciaena'' was first proposed as a monospecific subgenus of ''Sciaena'' in 1923 by the American ichthyologists Henry Weed Fowler and Barton Appler Bean when they described ''Sciaena (Ctenosciaena) dubia''. This taxon was later found to be a junior synonym of ''Umbrina gracilicirrhus'' which had been described by the Dutch ichthyologist Jan Marie Metzelaar from the coast of Venezuela. This genus has been placed in the subfamily Sciaeninae by some workers, but the 5th edition of ''Fishes of the World'' does not recognise subfamilies within the Sciaenidae which it places in the order Acanthuriformes. Etymology ''Ctenosciaena'' is a combination of ''cteno'', from ctenoid and ''Sciaena'' as ''Sciaena dubia'' seemed to have ctenoid scales, most of which had fallen off the type s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ctenosciaena Peruviana
''Ctenosciaena'' is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. These fishes are found in the Western Atlantic and southeastern Pacific Oceans. Taxonomy ''Ctenosciaena'' was first proposed as a monospecific subgenus of ''Sciaena'' in 1923 by the American ichthyologists Henry Weed Fowler and Barton Appler Bean when they described ''Sciaena (Ctenosciaena) dubia''. This taxon was later found to be a junior synonym of ''Umbrina gracilicirrhus'' which had been described by the Dutch ichthyologist Jan Marie Metzelaar from the coast of Venezuela. This genus has been placed in the subfamily Sciaeninae by some workers, but the 5th edition of ''Fishes of the World'' does not recognise subfamilies within the Sciaenidae which it places in the order Acanthuriformes. Etymology ''Ctenosciaena'' is a combination of ''cteno'', from ctenoid and ''Sciaena'' as ''Sciaena dubia'' seemed to have ctenoid scales, most of which had fallen off the type s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ctenosciaena Gracilicirrhus
''Ctenosciaena'' is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. These fishes are found in the Western Atlantic and southeastern Pacific Oceans. Taxonomy ''Ctenosciaena'' was first proposed as a monospecific subgenus of ''Sciaena'' in 1923 by the American ichthyologists Henry Weed Fowler and Barton Appler Bean when they described ''Sciaena (Ctenosciaena) dubia''. This taxon was later found to be a junior synonym of ''Umbrina gracilicirrhus'' which had been described by the Dutch ichthyologist Jan Marie Metzelaar from the coast of Venezuela. This genus has been placed in the subfamily Sciaeninae by some workers, but the 5th edition of ''Fishes of the World'' does not recognise subfamilies within the Sciaenidae which it places in the order Acanthuriformes. Etymology ''Ctenosciaena'' is a combination of ''cteno'', from ctenoid and ''Sciaena'' as ''Sciaena dubia'' seemed to have ctenoid scales, most of which had fallen off the type s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sciaenidae
Sciaenidae are a family of fish in the order Acanthuriformes. They are commonly called drums or croakers in reference to the repetitive throbbing or drumming sounds they make. The family consists of about 286 to 298 species in about 66 to 70 genera. Characteristics A sciaenid has a long dorsal fin reaching nearly to the tail, and a notch between the rays and spines of the dorsal, although the two parts are actually separate. Drums are somberly coloured, usually in shades of brown, with a lateral line on each side that extends to the tip of the caudal fin. The anal fin usually has two spines, while the dorsal fins are deeply notched or separate. Most species have a rounded or pointed caudal fin. The mouth is set low and is usually inferior. Their croaking mechanism involves the beating of abdominal muscles against the swim bladder. Sciaenids are found worldwide, in both fresh and salt water, and are typically benthic carnivores, feeding on invertebrates and smaller fish. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Weed Fowler
Henry Weed Fowler (March 23, 1878 – June 21, 1965) was an American zoologist born in Holmesburg, Pennsylvania. He studied at Stanford University under David Starr Jordan. He joined the Academy of Natural Sciences in Philadelphia and worked as an assistant from 1903 to 1922, associate curator of vertebrates from 1922 to 1934, curator of fish and reptiles from 1934 to 1940 and curator of fish from 1940 to 1965. He published material on numerous topics including crustaceans, birds, reptiles and amphibians, but his most important work was on fish. In 1927 he co-founded the American Society of Ichthyologists and Herpetologists and acted as treasurer until the end of 1927. In 1934 he went to Cuba, alongside Charles Cadwalader (president of the Academy of Natural Sciences of Philadelphia), at the invitation of Ernest Hemingway to study billfishes, he stayed with Hemingway for six weeks and the three men developed a friendship which continued after this trip and Hemingway sent speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sciaena Umbra
The brown meagre or corb (''Sciaena umbra'') is a species of croaker found in, the eastern Atlantic, Mediterranean Sea and Black Sea occurring in shallow waters and sandy bottoms. It is harvested for human consumption, especially in the Mediterranean. Etymology The specific name ''umbra'' is derived from the Latin for a shadow or phantom while the generic name is derived from the Greek ''skiaina'' or ''skion'' meaning a fish, or more specifically a red mullet. Distribution The brown meagre is found in the eastern Atlantic Ocean from the southern English Channel south to Senegal and Cape Verde, including the Canary Islands, records from West Africa south of Senegal are questionable. Also in the Mediterranean Sea, the Black Sea and Sea of Azov. Habitat The brown meagre is found at depths between 5m and 200m, mainly over rocky and sandy substrates and the young enter estuarine environments. Description The brown meagre is between 30 and 40 cm in length but can grow to 60&n ... [...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 length me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian Tropical Research Institute
The Smithsonian Tropical Research Institute (STRI, es, Instituto Smithsonian de Investigaciones Tropicales) is located in Panama and is the only bureau of the Smithsonian Institution based outside of the United States. It is dedicated to understanding the past, present, and future of tropical ecosystems and their relevance to human welfare. STRI grew out of a small field station established in 1923 on Barro Colorado Island in the Panama Canal Zone to become one of the world's leading tropical research organizations. STRI's facilities provide for long-term ecological studies in the tropics and are used by some 1,200 visiting scientists from academic and research institutions around the world every year. History Smithsonian scientists first came to Panama during the construction of the Panama Canal from 1904 to 1914. The Secretary of the Smithsonian Institution, Charles Doolittle Walcott, reached an agreement with Federico Boyd to conduct a biological inventory of the new Canal Zo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateral Line
The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells, known as hair cells, which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Lateral lines serve an important role in schooling behavior, predation, and orientation. Fish can use their lateral line system to follow the vortices produced by fleeing prey. Lateral lines are usually visible as faint lines of pores running lengthwise down each side, from the vicinity of the gill covers to the base of the tail. In some species, the receptive organs of the lateral line have been modified to function as electroreceptors, which are organs used to detect electrical impulses, and as such, these systems remain closely linked. Most amphibian larvae and some fully aquatic adult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudal 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] |
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] |
Preoperculum
This glossary of ichthyology is a list of definitions of terms and concepts used in ichthyology, the study of fishes. A B C D E F G H I J K L M N O P R S T U V W {{glossaryend * Fishkeeping Ichthyology Ichthyology is the branch of zoology devoted to the study of fish, including bony fish ( Osteichthyes), cartilaginous fish (Chondrichthyes), and ja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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