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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] |
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] |
Rhinidae
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 wedgefi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batoidea
Batoidea is a superorder of cartilaginous fishes, commonly known as rays. They and their close relatives, the sharks, comprise the subclass Elasmobranchii. Rays are the largest group of cartilaginous fishes, with well over 600 species in 26 families. Rays are distinguished by their flattened bodies, enlarged pectoral fins that are fused to the head, and gill slits that are placed on their ventral surfaces. Anatomy Batoids are flat-bodied, and, like sharks, are cartilaginous fish, meaning they have a boneless skeleton made of a tough, elastic cartilage. Most batoids have five ventral slot-like body openings called gill slits that lead from the gills, but the Hexatrygonidae have six. Batoid gill slits lie under the pectoral fins on the underside, whereas a shark's are on the sides of the head. Most batoids have a flat, disk-like body, with the exception of the guitarfishes and sawfishes, while most sharks have a spindle-shaped body. Many species of batoid have developed their pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 order, but based on genetic evidence it is now in Rhinopristiformes or a sister taxon to Rhinopristiformes. The two species of panrays are generally poorly known and one of the species was only scientifically described in 2016. They are up to about long, and brownish above with a heavily mottled, blotched or barred dark pattern. They are ovoviviparous and feed on benthic invertebrates. Species There are two recognized species in the genus: * Maculate panray (''Zanobatus maculatus'') * Striped panray The striped panray (''Zanobatus schoenleinii'') is a species of ray in the family Zanobatidae. It was considered the only species in its genus and family until the description of the maculate panray (''Z. maculatus'') in 2016. The str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaucostegidae
''Glaucostegus'', also known as giant guitarfishes, is a genus of large Indo-Pacific rays, with a single species, '' Glaucostegus cemiculus'', in the East Atlantic, and Mediterranean. They were formerly classified in the family Rhinobatidae but are now recognized as a distinct family, Glaucostegidae. Their upperparts are uniform pale yellowish, brownish or greyish, and the nose is pale. Most are large, reaching in length depending on the exact species involved, except for the small ''G. obtusus'' that is less than . Species There are seven recognized species, all of which are classified as critically endangered: * '' Glaucostegus cemiculus'' (Geoffroy St. Hilaire, 1817) (Blackchin guitarfish) * '' Glaucostegus granulatus'' Cuvier, 1829 (Sharpnose guitarfish) * ''Glaucostegus halavi The halavi guitarfish (''Glaucostegus halavi'') is a species of ray found in the Indo-West Pacific (Red Sea to Gulf of Oman, with unconfirmed records in the area east of Oman). Recorded twice, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cartilaginous Fishes
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 deep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trygonorrhinidae
Trygonorrhinidae, the banjo rays, is a family of rays, comprising eight species in three genera. They were formerly classified in the family Rhinobatidae. Taxonomy * '' Aptychotrema'' Norman, 1926 ** '' Aptychotrema rostrata'' Shaw, 1794 (Eastern shovelnose ray) ** '' Aptychotrema timorensis'' Last A last is a mechanical form shaped like a human foot. It is used by shoemakers and cordwainers in the manufacture and repair of shoes. Lasts typically come in pairs and have been made from various materials, including hardwoods, cast iron, an ..., 2004 (Spotted shovelnose ray) ** '' Aptychotrema vincentiana'' Haacke, 1885 (Western shovelnose ray) * '' Trygonorrhina'' J. P. Müller & Henle, 1838 ** '' Trygonorrhina dumerilii'' (Castelnau, 1873) (Southern fiddler ray) ** '' Trygonorrhina fasciata'' J. P. Müller & Henle, 1841 (Eastern fiddler ray) * '' Zapteryx'' D. S. Jordan & C. H. Gilbert, 1880 ** '' Zapteryx brevirostris'' J. P. Müller & Henle, 1841 (Shortnose guitarfish) * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pristidae
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 defendi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platyrhinidae
The Platyrhinidae are a family (biology), family of Batoidea, rays, commonly known as thornbacks due to their dorsal rows of large thorns. They resemble guitarfishes in shape. Though traditionally classified with stingrays, molecular evidence suggests they are more closely related to electric rays in the order Torpediniformes. Genera and species * Genus ''Platyrhina'' Johannes Peter Müller, J. P. Müller & Friedrich Gustav Jakob Henle, Henle, 1838 ** ''Platyrhina hyugaensis'' Yukio Iwatsuki, Iwatsuki, Kei Miyamoto, Miyamoto & Kazuhiro Nakaya, Nakaya, 2011 (Hyuga fanray) ** ''Platyrhina sinensis'' Marcus Elieser Bloch, Bloch & Johann Gottlob Schneider, J. G. Schneider, 1801 (fanray) ** ''Platyrhina tangi'' Yukio Iwatsuki, Iwatsuki, Zhang Jie (ichthyologist), J. Zhang & Kazuhiro Nakaya, Nakaya, 2011 (yellow-spotted fanray) * Genus ''Platyrhinoidis'' Samuel Garman, Garman 1881 ** ''Platyrhinoidis triseriata'' David Starr Jordan, D. S. Jordan & Charles Henry Gilbert, Gilbert, 1880 (t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogenetic
In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups of organisms. These relationships are determined by Computational phylogenetics, phylogenetic inference methods that focus on observed heritable traits, such as DNA sequences, protein amino acid sequences, or morphology. The result of such an analysis is a phylogenetic tree—a diagram containing a hypothesis of relationships that reflects the evolutionary history of a group of organisms. The tips of a phylogenetic tree can be living taxa or fossils, and represent the "end" or the present time in an evolutionary lineage. A phylogenetic diagram can be rooted or unrooted. A rooted tree diagram indicates the hypothetical common ancestor of the tree. An unrooted tree diagram (a network) makes no assumption about the ancestral line, and does ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Guitarfish
The common guitarfish (''Rhinobatos rhinobatos'') is a species of cartilaginous fish in the family Rhinobatidae. It is native to the eastern Atlantic Ocean and the Mediterranean Sea. It is a bottom-dwelling fish feeding on crustaceans, other invertebrates and fish. The females give birth to live young. Its lifestyle makes it vulnerable to trawling and other fishing methods, populations seem to be declining and it has disappeared from parts of its range. Description The common guitarfish can grow to a length of about , but a more normal length is about . The dorsal surface is khaki-brown and the underparts are white. It is very similar in appearance to the blackchin guitarfish (''Rhinobatos cemiculus''), which shares its distribution, but is generally smaller, has larger eyes, more widely separated rostral ridges, a longer front nasal lobe and a wider back nasal flap. Distribution The common guitarfish is found in the north Atlantic Ocean from the Bay of Biscay to Angola and in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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