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Narkidae
Members of the family Narkidae are commonly known as sleeper rays. They are restricted to the temperate and tropical Indo-West Pacific from South Africa to Japan to Indonesia, and are exclusively marine and are absent from freshwater habitats. They occur from the intertidal zone to the continental shelf and the upper continental slope to a depth of 350 meters, favoring soft-bottomed habitats. Description Adult sleeper rays range in size from 8 to 46 cm in length and have flattened oval, circular, or pear-shaped pectoral fin discs. They have naked skin, without dermal denticles or thorns. The snout is moderately elongate and broadly rounded, with the rostral cartilage reduced to a slender medial rod. This distinguishes the narkids from the family Narcinidae, which have somewhat longer snouts supported by broad rostral cartilages. The mouth is straight, very narrow, and not highly protrusible, with strong labial folds and a weak groove around the periphery. The nostrils are p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolux Addisoni
The ornate sleeper-ray (''Electrolux addisoni'') is a species of electric ray in the family (biology), family Narkidae, and the only member of the genus ''Electrolux''. It lives on reefs feeding on polychaete worms and small crustaceans, it has only been seen by divers to feed during the daytime. It is endemism, endemic to the coast of South Africa. It was first recorded in 1984 but was not biological classification, described until 2007. It was ranked as the number one newly described species of 2007 by the International Institute for Species Exploration. In an episode of ''Extinct or Alive'', an ornate-sleeper ray was caught on footage feeding. Description ''Electrolux addisoni'' is easily distinguished from other narkids by its striking colour pattern consisting of a dark brown dorsal surface of the disc with numerous small pale yellow spots and a series of concentric stripes. It can also be distinguished by its large spiracular papillae. It and ''Heteronarce'' are the only ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolux (fish)
The ornate sleeper-ray (''Electrolux addisoni'') is a species of electric ray in the family Narkidae, and the only member of the genus ''Electrolux''. It lives on reefs feeding on polychaete worms and small crustaceans, it has only been seen by divers to feed during the daytime. It is endemic to the coast of South Africa. It was first recorded in 1984 but was not described until 2007. It was ranked as the number one newly described species of 2007 by the International Institute for Species Exploration. In an episode of ''Extinct or Alive'', an ornate-sleeper ray was caught on footage feeding. Description ''Electrolux addisoni'' is easily distinguished from other narkids by its striking colour pattern consisting of a dark brown dorsal surface of the disc with numerous small pale yellow spots and a series of concentric stripes. It can also be distinguished by its large spiracular papillae. It and ''Heteronarce'' are the only genera in the family Narkidae that have two dorsal fins. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onefin Electric Ray
The onefin electric ray or Cape numbfish (''Narke capensis'') is a common but little-known species of electric ray in the family (biology), family Narkidae, native to South Africa and Namibia. It is a benthic fish found in shallow coastal bays over sandy or muddy bottoms. This small species reaches in length, and has a nearly circular pectoral fin disc and a short, muscular tail that supports a large caudal fin. It can be identified by its single dorsal fin, which is located over the large pelvic fins. Its dorsal coloration is yellowish to dusky brown. Like other members of its family, the onefin electric ray can defend itself with a strong electric shock produced from a pair of kidney-shaped Electric organ (biology), electric organs beside its head. It feeds mainly on polychaete worms, and likely viviparous, gives birth to live young. The International Union for Conservation of Nature (IUCN) presently lacks enough information to assess the conservation status of this species. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crassinarke Dormitor
The sleeper torpedo (''Crassinarke dormitor'') is a species of electric ray in the family Narkidae. It is the only species in the genus ''Crassinarke''. It occurs in relatively shallow water off the coasts of southern Japan, China and Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea .... It may be the same species as the Japanese sleeper ray (''Narke japonica'') References * Narkidae Fish of Japan Marine fauna of East Asia Fish described in 1951 Strongly electric fish {{batoid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic Ocean, South Atlantic and Indian Ocean; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; to the east and northeast by Mozambique and Eswatini; and it encloses Lesotho. Covering an area of , the country has Demographics of South Africa, a population of over 64 million people. Pretoria is the administrative capital, while Cape Town, as the seat of Parliament of South Africa, Parliament, is the legislative capital, and Bloemfontein is regarded as the judicial capital. The largest, most populous city is Johannesburg, followed by Cape Town and Durban. Cradle of Humankind, Archaeological findings suggest that various hominid species existed in South Africa about 2.5 million years ago, and modern humans inhabited the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benthic
The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from the Ancient Greek word (), meaning "the depths". Organisms living in this zone are called benthos and include microorganisms (e.g., bacteria and fungi) as well as larger invertebrates, such as crustaceans and polychaetes. Organisms here, known as bottom dwellers, generally live in close relationship with the substrate and many are permanently attached to the bottom. The benthic boundary layer, which includes the bottom layer of water and the uppermost layer of sediment directly influenced by the overlying water, is an integral part of the benthic zone, as it greatly influences the biological activity that takes place there. Examples of contact soil layers include sand bottoms, rocky outcrops, coral, and bay mud. Description Oceans The benthic region of the ocean begins at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phillip C
Phillip may refer to: * Phillip (Bob the Builder), Bob the Builder's character * Phillip (character), Wallace & Gromit's character * Phillip (Saliba), Lebanese Orthodox prelate * Phillip (given name), given name * Phillip (surname), surname * Phillip, Australian Capital Territory, suburb of Canberra, Australia * Phillip Bay, suburb in the Eastern Suburbs of Sydney, Australia * Phillip County, one of the original Nineteen Counties in New South Wales See also * Phillip Island (other) * Phillips (other) * Philip (other) Philip is a masculine given name. Philip or Phillip or Philipp may also refer to: Places * Phillip, Australian Capital Territory, Canberra * Philip, South Dakota, United States * Philipp, Mississippi, United States * Phillip Island (disambi ... * Phillip Chancellor * Port Philip (other) {{dab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonard Compagno
Leonard Joseph Victor Compagno (1943-2024) was an international authority on shark taxonomy and the author of many scientific papers and books on the subject, best known of which is his 1984 catalogue of shark species produced for the Food and Agriculture Organization (FAO) of the United Nations. Compagno was mentioned in the credits of the 1975 film '' Jaws'' along with the National Geographic Society. Career *Ph.D, Stanford University, 1979 *Adjunct professor, San Francisco State University, 1979 to 1985 *Curator of Fishes in the Division of Life Sciences and Head of the Shark Research Centre (SRC), Iziko Museums, Cape Town *Director, Shark Research Institute (SRI) Selected bibliography *Compagno, L.J.V., 1979. ''Carcharhinoid sharks: morphology, systematics and phylogeny''. Unpublished Ph. D. Thesis, Stanford University, 932 p. Available from University Microfilms International, Ann Arbor, Michigan. *Leonard Compagno, 1984a. FAO The Food and Agriculture Organization o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indo-West Pacific
The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the seas connecting the two. The term is especially useful in marine biology, ichthyology, and similar fields, since many marine habitats are continuously connected from Madagascar to Japan and Oceania, and a number of species occur over that range, but are not found in the Atlantic Ocean. As a distinct marine realm, the region has an exceptionally high species richness, with the world's highest species richness being found in at its heart in the Coral Triangle, and a remarkable gradient of decreasing species richness radiating outward in all directions. The region includes over 3,000 species of fish, compared with around 1,200 in the next richest marine region, the Western Atlantic, and around 500 species of reef building corals, compared w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kazunori Takagi
Kazunori (written: 一慶, 一典, 一則, 一謙, 一徳, 一矩, 一紀, 和典, 和則, 和徳, 和行, 和範 or 和憲) is a masculine Japanese given name. Notable people with the name include: *, Japanese samurai *, Japanese footballer *, Japanese anime screenwriter and artist *, Japanese footballer *, Japanese sumo wrestler *, Japanese high jumper *, Japanese judoka *, Japanese politician *, Japanese actor *, Japanese baseball player *, Japanese politician *, Japanese video game designer *, Japanese actor *, Japanese mixed martial artist and judoka *, Japanese footballer {{given name Japanese masculine given names Masculine given names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Food And Agriculture Organization
The Food and Agriculture Organization of the United Nations; . (FAO) is a specialized agency of the United Nations that leads international efforts to defeat hunger and improve nutrition and food security. Its Latin motto, , translates to "let there be bread". It was founded on 16 October 1945. The FAO comprises 195 members, including 194 countries and the European Union. Its headquarters is in Rome, Italy, and it maintains regional and field offices worldwide, operating in over 130 countries. It helps governments and development agencies coordinate their activities to improve and develop agriculture, forestry, fisheries, and land and water resources. It also conducts research, provides technical assistance to projects, operates educational and training programs, and collects agricultural output, production, and development data. The FAO is governed by a biennial conference representing each member country and the European Union, which elects a 49-member executive cou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
