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Wedgefish
Wedgefishes are rays of the family Rhinidae, comprising eleven species in three genera. Classified in the order Rhinopristiformes along with guitarfishes and sawfishes, they have also been known as giant guitarfishes or sharkfin guitarfishes. Taxonomy * ''Rhina'' Bloch & Schneider, 1801 ** '' Rhina ancylostoma'' Bloch & Schneider, 1801 (Shark ray) * '' Rhynchobatus'' J. P. Müller & Henle, 1837 ** ''Rhynchobatus australiae'' Whitley, 1939 (Bottlenose wedgefish) ** '' Rhynchobatus cooki'' Last, Kyne & Compagno, 2016 (Roughnose wedgefish) ** '' Rhynchobatus djiddensis'' (Forsskål, 1775) (Whitespotted wedgefish) ** '' Rhynchobatus immaculatus'' Last, Ho & Chen, 2013 (Taiwanese wedgefish) ** '' Rhynchobatus laevis'' (Bloch & Schneider, 1801) (Smoothnose wedgefish) ** '' Rhynchobatus luebberti'' Ehrenbaum, 1915 (African wedgefish) ** '' Rhynchobatus mononoke'' Koeda, Itou, Yamada & Motomura, 2020 (Japanese wedgefish) ** '' Rhynchobatus palpebratus'' Compagno & Last, 2008 (Eyebrow we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giant Guitarfish
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guitarfish
The guitarfish, also referred to as shovelnose rays, are a family, Rhinobatidae, of rays. The guitarfish are known for an elongated body with a flattened head and trunk and small, ray-like wings. The combined range of the various species is tropical, subtropical, and warm temperate waters worldwide. Names In Australia and New Zealand, guitarfish are commonly referred to as shovelnose rays or shovelnose sharks. Description Guitarfish have a body from intermediate between those of sharks and rays. The tail has a typical shark-like form, but in many species, the head has a triangular, or guitar-like shape, rather than the disc-shape formed by fusion with the pectoral fins found in other rays. Reproduction Guitarfish are ovoviviparous; the embryo matures inside an egg within the mother until it is ready to hatch. This is typical of rays. Habitat Guitarfish are bottom feeders that bury themselves in mud or sand and eat worms, crabs, and clams. Some can tolerate salt, fresh, and bra ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sawfish
Sawfish, also known as carpenter sharks, are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged in a way that resembles a saw. They are among the largest fish with some species reaching lengths of about . They are found worldwide in tropical and subtropical regions in coastal marine and brackish estuarine waters, as well as freshwater rivers and lakes. They are endangered. They should not be confused with sawsharks (order Pristiophoriformes) or the extinct sclerorhynchoids (order Rajiformes) which have a similar appearance, or swordfish (family Xiphiidae) which have a similar name but a very different appearance. Sawfishes are relatively slow breeders and the females give birth to live young. They feed on fish and invertebrates that are detected and captured with the use of their saw. They are generally harmless to humans, but can inflict serious injuries with the saw when captured and defend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchorhina Mauritaniensis
The false shark ray (''Rhynchorhina mauritaniensis'') is a species of fish in the Rhinidae family and the only species in the genus ''Rhynchorhina''. This rare ray is only known from shallow coastal Atlantic waters in Banc d’Arguin, Mauritania. The upperparts of the false shark ray are greyish or greenish-brown and densely covered in white spots. The largest known reliably measured specimen was long, but individuals about have been seen. Overall it resembles the African wedgefish (''Rhynchobatus luebberti'') found in the same region, but it has a blunt rounded snout somewhat like the shark ray or bowmouth guitarfish (''Rhina ancylostoma'') of the Indo-Pacific. The genus name ''Rhynchorhina'' (Rhyncho+rhina) is a reference to this "mix" of features. Although long known by the local Imraguen people, the first record confirmed by scientists was in 1998 and it only received its species description in 2016. Very little is known about the behavior of the false shark ray, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinopristiformes
Rhinopristiformes is an order of rays, cartilaginous fishes related to sharks, containing shovelnose rays and allied groups. Families * Family Glaucostegidae (giant guitarfishes) * Family Pristidae (sawfishes) * Family Rhinidae (wedgefishes) * Family Rhinobatidae (guitarfishes) * Family Trygonorrhinidae (banjo rays) ;Additional families Two additional families are associated with the order but their phylogenetic relationships have not been fully resolved: * Family Platyrhinidae (thornback rays) * Family Zanobatidae The panrays are a genus, ''Zanobatus'', of rays found in coastal parts of the warm East Atlantic Ocean, ranging from Morocco to Angola. It is the only genus in the family Zanobatidae, which traditionally has been included in the Myliobatiformes ... (panrays) Characteristics Species in the order Rhinopristiformes generally exhibit slow growth, late maturity, and low fecundity. Alone or in combination, such features cause fishes in this group to be suscep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chondrichthyes
Chondrichthyes (; ) is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or ''bony fishes'', which have skeletons primarily composed of bone tissue. Chondrichthyes are jawed vertebrates with paired fins, paired nares, scales, and a heart with its chambers in series. Extant chondrichthyes range in size from the 10 cm (3.9 in) finless sleeper ray to the 10 m (32 ft) whale shark. The class is divided into two subclasses: Elasmobranchii (sharks, rays, skates, and sawfish) and Holocephali ( chimaeras, sometimes called ghost sharks, which are sometimes separated into their own class). Within the infraphylum Gnathostomata, cartilaginous fishes are distinct from all other jawed vertebrates. Anatomy Skeleton The skeleton is cartilaginous. The notochord is gradually replaced by a vertebral column during development, except in Holocephali, where the notochord stays intact. In some deepwat ... [...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 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 (5 June 1906 – 23 August 1991), because of his contributions to the systematics of ''Rhynchobatus''. References Rhynchobatus, broadnose wedgefish Marine fauna of Southeast Asia Taxa named by Leonard Compagno Taxa named by Pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchobatus Palpebratus
''Rhynchobatus palpebratus'', the eyebrow wedgefish, is a species of fish in the Rhinidae family.Compagno, L.J.V. & Last, P.R. (2008). ''A new species of wedgefish, Rhynchobatus palpebratus sp. nov. (Rhynchobatoidei: Rhynchobatidae), from the Indo–West Pacific.'' In: Last, P.R., White, W.T. & Pogonoski, J.J., eds: Descriptions of new Australian chondrichthyans. CSIRO Marine and Atmospheric Research Paper 022, pp. 227–240. It is found in coastal waters off northern Australia. It reaches up to in length and closely resemble the smoothnose wedgefish (''R. laevis''), which has denser white spotting, and also differ in distribution and genetics Genetics is the study of genes, genetic variation, and heredity in organisms.Hartl D, Jones E (2005) It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinian friar wor .... References External links Fishes of Australia : ''Rhynchobatus palpebratus'' eyebr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchobatus Mononoke
''Rhynchobatus mononoke'', the Japanese wedgefish, is a species of fish in the family Rhinidae. It is found in southern Japan. This species reaches a length of . References mononoke ''Mononoke'' (物の怪) are vengeful spirits (onryō), dead spirits (shiryō), live spirits (ikiryō), or spirits in Japanese classical literature and folk religion that were said to do things like possess individuals and make them suffer, cause ... Fish of Japan Taxa named by Keita Koeda Taxa named by Masahide Itou Taxa named by Morihiko Yamada Taxa named by Hiroyuki Motomura Fish described in 2020 Taxonomy articles created by Polbot {{Chondrichthyes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchobatus Luebberti
The African wedgefish, guitarra, Lubbert's guitarfish, or spikenose wedgefish (''Rhynchobatus luebberti'') is a species of fish in the Rhinidae family. It is the only species in its genus to occur in the East Atlantic. Etymology The fish is named in honor of Hans Julius Lübbert (1870-1951), a German fisheries inspector. Taxonomy Description African wedgefish have a pale olive-brown or olive-grey color with white spots spread across their back. The edges of their fins are sometimes paler in color. They have a cluster of three black marks on each side of a ridge that runs along their back. Another dark mark can be found each one of these marks. The area around each fish's eye is lighter, reminiscent of a mask. The fish have ridges near their front that possess a row of thorns. The African wedgefish has a maximum total length of about 3 m (9.8 ft), but are usually 1.5 m (4.9 ft) long. They have 172-176 free vertebral centra. Distribution and habitat T ... [...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 pecto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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