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Vulnerable Fish
In September 2016, the International Union for Conservation of Nature (IUCN) listed 1245 Vulnerable species, vulnerable fish species. Of all evaluated fish species, 8.1% are listed as vulnerable. The IUCN also lists eight fish subspecies as vulnerable. Of the subpopulations of fishes evaluated by the IUCN, 18 species subpopulations have been assessed as vulnerable. For a species to be assessed as vulnerable to extinction the best available evidence must meet quantitative criteria set by the IUCN designed to reflect "a high risk of extinction in the wild". Endangered and critically endangered species also meet the quantitative criteria of vulnerable species, and are listed separately. See: List of endangered fishes, List of critically endangered fishes. Vulnerable, endangered and critically endangered species are collectively referred to as threatened species by the IUCN. Additionally 3191 fish species (21% of those evaluated) are listed as data deficient, meaning there is ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beastie Bot
Beastie may refer to: Entertainment * Beastie (Alton Towers), a roller coaster previously located at Alton Towers in Staffordshire, England * The Beastie (Kings Island), a previous name for the Woodstock Express roller coaster located at Kings Island in Mason, Ohio * The Beastie (Wonderland Sydney), a roller coaster that previously existed at Wonderland Sydney in Australia * The Beasties, a nickname for the hip hop musical group Beastie Boys * Beastie, a female professional wrestler from the Gorgeous Ladies of Wrestling * "Beastie", a song by Jethro Tull from ''Broadsword and the Beast'' Fiction * Beasties (film), ''Beasties'' (film), a 1989 comedy horror film * The Beasties (book), ''The Beasties'' (book), a 2010 children's book by Jenny Nimmo * The Beasties (novel), ''The Beasties'' (novel), a 1997 young-adult novel by William Sleator * Beasties, a type of creature in the role-playing game ''Changeling: The Dreaming'' * ''Transformers: Beast Wars, Beast Wars'' (Canadian title: '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamniformes
The Lamniformes (, from Greek ''lamna'' "fish of prey") are an order (biology), order of sharks commonly known as mackerel sharks (which may also refer specifically to the family Lamnidae). It includes some of the most familiar species of sharks, such as the great white shark, great white as well as less familiar ones, such as the goblin shark and megamouth shark. Members of the order are distinguished by possessing two dorsal fins, an anal fin, five gill, gill slits, eyes without nictitating membranes, and a mouth extending behind the eyes. Species in two families of Lamniformes – Lamnidae and Alopiidae – are distinguished for maintaining a higher body temperature than the surrounding waters. Members of the group include Macro-predator, macropredators, generally of medium-large size, including the largest macropredatory shark ever, the extinct ''Otodus megalodon,'' as well as large planktivores. Although some authors have argued that the Late Jurassic ''Palaeocarcharias'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchobatus Springeri
The broadnose wedgefish (''Rhynchobatus springeri'') is a species of fish in the Rhinidae family. It is found in coastal and estuarine habitats in southeast Asia, where it is documented from Java, Borneo, Singapore, the Philippines and Thailand.Compagno, L.J.V. and P.R. Last (2010). ''A new species of wedgefish, Rhynchobatus springeri (Rhynchobatoidei, Rhynchobatidae), from the Western Pacific.'' 77-88 pp. in: Last, P.R., White, W.T. & Pogonoski, J.J., eds.: Descriptions of new sharks and rays from Borneo. CSIRO Marine and Atmospheric Research Paper no. 32. It is threatened by habitat loss and overfishing. This is a medium-sized species of '' Rhynchobatus'', which reaches a maximum length of about . Etymology The ray is named in honor of Stewart Springer Stewart Springer (5 June 190623 August 1991) was an American ichthyologist and herpetologist. He was an expert on shark behavior, classification (taxonomy), and population distribution. More than 35 species of sharks, skates, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchobatus Sp
''Rhynchobatus'' is a group of rays commonly known as wedgefishes in the family Rhinidae. They are found in the tropical and subtropical Indo-Pacific with a single species (''R. luebberti'') in the eastern Atlantic. All species in this genus are assessed as Vulnerable or Endangered by IUCN. The species are superficially similar and have often been confused. The various species can generally be separated by a combination of snout shape, vertebral count and exact colour (distribution of white spots, and presence/absence of a black spot at the base of the pectoral fin). The largest species can reach about and are among the largest species of Rhinopristiformes, but the smallest reach less than one-third of that size.Last, Kyne & Compagno (2016). A new species of wedgefish Rhynchobatus cooki (Rhinopristiformes, Rhinidae) from the Indo-West Pacific. Zootaxa 4139(2): 233-247. Species There are currently seven recognized species in this genus: In the past all the Indo-Pacific specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchobatus Laevis
The smoothnose wedgefish (''Rhynchobatus laevis'') is a species of fish in the Rhinidae family. It is found in northern Indian Ocean and northwestern Pacific Ocean, ranging from the Arabian Sea and Persian Gulf east to Bangladesh, and South China Sea to southern Japan. Populations elsewhere are now recognized as separate species.Last, P.R., Ho, H.-C. & Chen, R.-R. (2013): A new species of wedgefish, Rhynchobatus immaculatus (Chondrichthyes, Rhynchobatidae), from Taiwan. Pp. 185-198 in: de Carvalho, M.R., Ebert, D.A., Ho, H.-C. & White, W.T. (eds.) : Systematics and biodiversity of sharks, rays, and chimaeras (Chondrichthyes) of Taiwan. Zootaxa, 3752 (1): 1–386. Its natural habitat is shallow coastal seas and off the mouths of rivers. It is threatened by habitat loss and overfishing. Due to confusion with relatives it is poorly known, but it likely reaches at least in length. Its upperparts are greyish or brownish with 4–5 rows of white spots along each side; above each pector ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchobatus Djiddensis
The giant guitarfish (''Rhynchobatus djiddensis''), also known as the whitespotted wedgefish, is a large species of guitarfish in the family Rhinidae. It is restricted to the Red Sea, Persian Gulf, and western Indian Ocean, but was formerly considered more widespread due to confusion with its relatives. Taxonomy and range The giant guitarfish was previously believed to range throughout a large part of the Indo-Pacific, but recent evidence has shown that it, as traditionally defined, actually was a species complex consisting of four different species. In addition to the giant guitarfish, this complex includes the white-spotted guitarfish, the broadnose wedgefish and possibly the smoothnose wedgefish. With these as separate species, the giant guitarfish has a relatively restricted range; it is found only in the Red Sea and Persian Gulf, and the western Indian Ocean as far south as South Africa. Ranging across the western Indian Ocean, it is common to misidentify the separate sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchobatus Australiae
''Rhynchobatus australiae'', also called the white-spotted guitarfish, white-spotted wedgefish or bottlenose wedgefish, is a species of fish in the Rhinidae family. It is found from shallow waters to a depth of at least in the Indo-Pacific, ranging from the East African coast and the Red Sea, to Taiwan, the Philippines and Australia. It is part of a species complex that also includes the giant guitarfish, the broadnose wedgefish and possibly the smoothnose wedgefish. Anatomy and appearance ''Rhynchobatus australiae'' reaches about in length. Juveniles and young adults are greyish or brownish above with a sparse covering of white spots and a black spot above each pectoral fin Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish aquatic locomotion, swim. Apart from the tail or caudal fin, fish fins have no direct connection with the vertebral column .... There are three white spots above each black spot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchobatidae
''Rhynchobatus'' is a group of rays commonly known as wedgefishes in the family Rhinidae. They are found in the tropical and subtropical Indo-Pacific with a single species (''R. luebberti'') in the eastern Atlantic. All species in this genus are assessed as Vulnerable or Endangered by IUCN. The species are superficially similar and have often been confused. The various species can generally be separated by a combination of snout shape, vertebral count and exact colour (distribution of white spots, and presence/absence of a black spot at the base of the pectoral fin). The largest species can reach about and are among the largest species of Rhinopristiformes, but the smallest reach less than one-third of that size.Last, Kyne & Compagno (2016). A new species of wedgefish Rhynchobatus cooki (Rhinopristiformes, Rhinidae) from the Indo-West Pacific. Zootaxa 4139(2): 233-247. Species There are currently seven recognized species in this genus: In the past all the Indo-Pacific specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rajiformes
Rajiformes is one of the four Order (biology), orders in the clade Batomorphi, often referred to as the superorder Batoidea, flattened cartilaginous fishes related to sharks. Rajiforms are distinguished by the presence of greatly enlarged pectoral fins, which reach as far forward as the sides of the head, with a generally flattened body. The undulatory pectoral fin motion diagnostic to this taxon is known as Batoid locomotion, rajiform locomotion. The eyes and Spiracle (vertebrates), spiracles are located on the upper surface of the head and the gill slits are on the underside of the body. Most species give birth to live young, although some lay eggs enclosed in a horny capsule ("mermaid's purse"). Characteristics Rajoids typically have a dorsoventrally flattened body. The snout is slender and pointed and the wide mouth, often covered with a fleshy nasal flap, is on the underside of the head. The eyes and well-developed spiracles are located on the top of the head. In most spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isurus Oxyrinchus
The shortfin mako shark (; ; ''Isurus oxyrinchus''), also known as the shortfin mako, blue pointer, or bonito shark, is a large mackerel shark. It is commonly referred to as the mako shark, as is the longfin mako shark (''Isurus paucus''). The fastest known shark species, able to reach speeds of in bursts, the shortfin mako can attain a size of in length and weigh . The species is classified as Endangered by the IUCN. Etymology "Mako" comes from the Māori language, meaning either the shark or a shark tooth. Following the Māori language, "mako" in English is both singular and plural. The word may have originated in a dialectal variation, as it is similar to the common words for shark in a number of Polynesian languages—''makō'' in the Kāi Tahu Māori dialect, ''mangō'' in other Māori dialects, ''mago'' in Samoan, ''ma'o'' in Tahitian, and ''mano'' in Hawaiian. The first written usage is in Lee and Kendall's ''Grammar and vocabulary of the language of New Zealand'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odontaspis Ferox
''Odontaspis'' (from 'tooth') and 'shield') is a genus of sand shark with two extant species. Description Bigeye sand tigers can reach a length of about and smalltooth sand tigers of about 4.1 m. They are large-bodied sharks with long, conical snouts, broad-based dorsal and anal fins, and an asymmetrical caudal fin with a strong lower lobe. Their teeth are large, with prominent narrow cusps. They are distinguished from the similar genus ''Carcharias'' by the absence of crushing posterior teeth.Bourdon, J''Odontaspis'' Agassiz 1838 ''Elasmo.com''. Retrieved on December 24, 2008. These bottom dwelling, deepwater sharks can be found in temperate and tropical waters of all the oceans. Extant species * '' Odontaspis ferox'' ( A. Risso, 1810) (smalltooth sand tiger) * '' Odontaspis noronhai'' (Maul, 1955) (bigeye sand tiger) Extinct species Extinct species within this genus include: * ''Odontaspis aculeatus'' Capetta & Case, 1975 * ''Odontaspis speyeri'' (Dartevelle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamna Nasus
The porbeagle or porbeagle shark (''Lamna nasus'') is a species of mackerel shark in the family Lamnidae, distributed widely in the cold and temperate marine waters of the North Atlantic and Southern Hemisphere. In the North Pacific, its ecological equivalent is the closely related salmon shark (''L. ditropis''). It typically reaches in length and a weight of ; North Atlantic sharks grow larger than Southern Hemisphere sharks and differ in coloration and aspects of life history. Gray above and white below, the porbeagle has a very stout midsection that tapers towards the long, pointed snout and the narrow base of the tail. It has large pectoral and first dorsal fins, tiny pelvic, second dorsal, and anal fins, and a crescent-shaped caudal fin. The most distinctive features of this species are its three-cusped teeth, the white blotch at the aft base of its first dorsal fin, and the two pairs of lateral keels on its tail. The porbeagle is an opportunistic hunter that preys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
