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Cephaloscyllium
''Cephaloscyllium'' is a genus of catsharks, and part of the family Scyliorhinidae, commonly known as swellsharks because of their ability to inflate their bodies with water or air as a defense against predators. These sluggish, bottom-dwelling sharks are found widely in the tropical and temperate coastal waters of the Indian and Pacific Oceans. They have stocky, spindle-shaped bodies and short, broad, and flattened heads. The mouth is capacious, containing many small teeth and lacking furrows at the corners. The two dorsal fins are placed far back on the body, with the first much larger than the second. Different species have various color patterns of saddles, blotches, reticulations, and/or spots. The largest members of the genus can grow over in length. Swellsharks prey on a variety of fishes and invertebrates, and are oviparous, with females producing egg capsules in pairs. They are harmless and have been deemed of having no commercial value. Taxonomy The genus ''Cephalosc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swellshark
The swell shark (''Cephaloscyllium ventriosum'') is a catshark in the family Scyliorhinidae. It is found in the tropical and subtropical eastern Pacific Ocean from between central California to southern Mexico, with an additional population off the coast of Chile. As a defense, the swell shark is able to expand to approximately double its regular size by swallowing water. Taxonomy When discovered in 1880, the swell shark was first described as ''Scyllium ventriosum'', but was later changed to ''Cephaloscyllium ventriosum''. The genus name comes from the Greek word ''kephale'', which means "head", and ''skylla'', which means a certain kind of shark. The species name comes from the Latin word ''ventrĭōsus'', which means "large-bellied". The species name refers to its ability to enlarge itself by taking in water. Distribution and habitat The swell shark is found in the eastern Pacific Ocean, from the central California coast to southern Mexico. There is an additional population ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Swellshark
The Australian swellshark (''Cephaloscyllium laticeps'') or draughtboard shark, is a species of catshark, and part of the family Scyliorhinidae, endemic to southern Australia. This bottom-dwelling species can be found on the continental shelf down to a depth of . Usually measuring long, it is a stout-bodied, broad-headed shark with a short tail and a first dorsal fin much larger than the second. It can be identified by its variegated dorsal coloration of brown or grey patches and numerous spots. Australian swellsharks are sedentary and mainly nocturnal, with most individuals remaining within the same local area throughout the year. It feeds on small crustaceans, cephalopods, and fish. When threatened, it responds by rapidly taking in water or air to inflate its body, hence the name "swellshark". This shark is oviparous and females lay pairs of distinctively ridged egg capsules at 20- to 30-day intervals. The eggs hatch after 11–12 months. Harmless and of little commerci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blotchy Swellshark
The blotchy swellshark, or Japanese swellshark, (''Cephaloscyllium umbratile'') is a common species of catshark, belonging to the family Scyliorhinidae. The Blotchy swellshark is found at depths of in the northwestern Pacific Ocean, from Japan to Taiwan. It is benthic in nature and favors rocky reefs. Reaching in length, this thick-bodied shark has a broad head, large mouth, and two unequally-sized dorsal fins positioned far back past the pelvic fins. It can be identified by its dorsal coloration, consisting of seven brown "saddles" and extensive darker mottling on a light tan background. This species has often been confounded with the draughtsboard shark (''C. isabellum'') and the Sarawak pygmy swellshark (''C. sarawakensis'') in scientific literature. Voracious and opportunistic in feeding habits, the blotchy swellshark is known to consume numerous types of fishes and invertebrates, including an unusually high diversity of cartilaginous fishes. Like other ''Cephaloscyllium'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draughtsboard Shark
The draughtsboard shark (''Cephaloscyllium isabellum'') is a species of catshark, and part of the family (biology), family Catshark, Scyliorhinidae, so named for its "checkerboard" color pattern of dark blotches. It is Endemism, endemic to New Zealand, where it is also known as the carpet shark (which usually refers to the entire order (biology), order Orectolobiformes). This shark typically reaches in length and has a thick body with a broad, flattened head and a capacious mouth. Its two dorsal fins are placed far back on the body, with the first much larger than the second. Occurring down to a depth of , the draughtsboard shark frequents rocky reefs during the day and sandy flats at night. Its diet consists of fishes and invertebrates. When threatened by a predator, it can take water or air into its body to inflate its body, which may be the cause of its unusual habit of bark (utterance), barking like a dog. This species is oviparous, with females laying smooth, tendril-bear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cook's Swellshark
The Cook's swellshark (''Cephaloscyllium cooki'') is a little-known species of catshark, belonging to the family Scyliorhinidae. This shark is found in the Arafura Sea at a depth of . It is a stocky-bodied shark with a short, broad head and a large mouth, and can be identified by the eight dark, pale-edged saddles along its grayish brown body and tail. The maximum known length of this species is . Like other swellsharks, it can inflate itself with water or air when threatened. Taxonomy The Cook's swellshark was described by Peter Last, Bernard Séret, and William White in a 2008 Commonwealth Scientific and Industrial Research Organisation (CSIRO) publication. It is named in honor of the late shark fishery biologist and conservationist Sid Cook. The type specimen is a long adult male collected from the Arafura Sea. Description A small species growing to long, the Cook's swellshark has a stocky body and a short, broad head. The snout is flattened and rounded, with the nostrils ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whitefin Swellshark
The whitefin swellshark (''Cephaloscyllium albipinnum'') is a little-known species of catshark, belonging to the family Scyliorhinidae, endemic to southeastern Australia. It is found down, on the outer continental shelf and upper continental slope. Reaching in length, this shark has a very thick body and a short, broad, flattened head with a large mouth. It is characterized by a dorsal color pattern of dark saddles and blotches over a brown to gray background, and light fin margins. When threatened the whitefin swellshark can inflate itself with water or air to increase its size. Reproduction is oviparous. As of 2019 The International Union for Conservation of Nature(IUCN) has assessed this species as Critically Endangered due to the significant decline of the population. Taxonomy Early specimens of the whitefin swellshark were often mistaken for the Australian swellshark (''C. laticeps'') or the draughtsboard shark (''C. isabellum''). In 1994, it was identified as a new sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reticulated Swellshark
The reticulated swellshark (''Cephaloscyllium fasciatum'') is a catshark of the family Scyliorhinidae. The Reticulated swellshark is found in the western Pacific Ocean between latitude In geography, latitude is a coordinate that specifies the north– south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north pol ...s 21° N and 28° S, at depths between 220 and 450 m. It is a blunt snouted shark with an inflatable stomach, narrow eye slits and a pattern of spots and lines covering its body. It can grow up to 80 cm in length. References * {{DEFAULTSORT:Reticulated swellshark Cephaloscyllium Taxa named by Chan William Lai-Yee Fish described in 1966 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catshark
Catsharks are ground sharks of the family Scyliorhinidae. They are the largest family of sharks with around 160 species placed in 17 genera. Although they are generally known as catsharks, some species can also be called dogfish due to previous naming. However, a dogfish may generally be distinguished from a catshark as catsharks lay eggs while dogfish have live young. Like most bottom feeders, catsharks feed on benthic invertebrates and smaller fish. They are not harmful to humans. The family is paraphyletic, containing several distinct lineages that do not form a monophyletic group. Genera The family includes 17 genera and over 150 species, making it the largest family of sharks. * '' Akheilos'' White, Fahmi & Weigmann, 2019 * ''Apristurus'' Garman, 1913 * ''Asymbolus'' Whitley, 1939 * ''Atelomycterus'' Garman, 1913 * ''Aulohalaelurus'' Fowler, 1934 * ''Bythaelurus'' Compagno, 1988 * ''Cephaloscyllium'' T. N. Gill, 1862 * ''Cephalurus'' Bigelow and Schroeder, 1941 * ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catshark
Catsharks are ground sharks of the family Scyliorhinidae. They are the largest family of sharks with around 160 species placed in 17 genera. Although they are generally known as catsharks, some species can also be called dogfish due to previous naming. However, a dogfish may generally be distinguished from a catshark as catsharks lay eggs while dogfish have live young. Like most bottom feeders, catsharks feed on benthic invertebrates and smaller fish. They are not harmful to humans. The family is paraphyletic, containing several distinct lineages that do not form a monophyletic group. Genera The family includes 17 genera and over 150 species, making it the largest family of sharks. * '' Akheilos'' White, Fahmi & Weigmann, 2019 * ''Apristurus'' Garman, 1913 * ''Asymbolus'' Whitley, 1939 * ''Atelomycterus'' Garman, 1913 * ''Aulohalaelurus'' Fowler, 1934 * ''Bythaelurus'' Compagno, 1988 * ''Cephaloscyllium'' T. N. Gill, 1862 * ''Cephalurus'' Bigelow and Schroeder, 1941 * ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benthic Fish
Demersal fish, also known as groundfish, live and feed on or near the bottom of seas or lakes (the demersal zone).Walrond Carl . "Coastal fish - Fish of the open sea floor"Te Ara - the Encyclopedia of New Zealand. Updated 2 March 2009 They occupy the sea floors and lake beds, which usually consist of mud, sand, gravel or rocks. In coastal waters they are found on or near the continental shelf, and in deep waters they are found on or near the continental slope or along the continental rise. They are not generally found in the deepest waters, such as abyssal depths or on the abyssal plain, but they can be found around seamounts and islands. The word ''demersal'' comes from the Latin ''demergere'', which means ''to sink''. Demersal fish are bottom feeders. They can be contrasted with pelagic fish which live and feed away from the bottom in the open water column. Demersal fish fillets contain little fish oil (one to four percent), whereas pelagic fish can contain up to 30 percen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samuel Garman
Samuel Walton Garman (June 5, 1843 – September 30, 1927), or "Garmann" as he sometimes styled himself, was a naturalist/zoologist from Pennsylvania. He became noted as an ichthyologist and herpetologist. Biography Garman was born in Indiana County, Pennsylvania, on 5 June 1843. In 1868 he joined an expedition to the American West with John Wesley Powell. He graduated from the Illinois State Normal University in 1870, and for the following year was principal of the Mississippi State Normal School. In 1871, he became professor of natural sciences in Ferry Hall Seminary, Lake Forest, Illinois, and a year later became a special pupil of Louis Agassiz. He was a friend and regular correspondent of the naturalist Edward Drinker Cope, and in 1872 accompanied him on a fossil hunting trip to Wyoming. In 1870 he became assistant director of herpetology and ichthyology at Harvard's Museum of Comparative Zoology. His work was mostly in the classification of fish, especially sharks, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bernard Séret
Bernard (''Bernhard'') is a French and West Germanic masculine given name. It is also a surname. The name is attested from at least the 9th century. West Germanic ''Bernhard'' is composed from the two elements ''bern'' "bear" and ''hard'' "brave, hardy". Its native Old English reflex was ''Beornheard'', which was replaced by the French form ''Bernard'' that was brought to England after the Norman Conquest. The name ''Bernhard'' was notably popular among Old Frisian speakers. Its wider use was popularized due to Saint Bernhard of Clairvaux (canonized in 1174). Bernard is the second most common surname in France. Geographical distribution As of 2014, 42.2% of all known bearers of the surname ''Bernard'' were residents of France (frequency 1:392), 12.5% of the United States (1:7,203), 7.0% of Haiti (1:382), 6.6% of Tanzania (1:1,961), 4.8% of Canada (1:1,896), 3.6% of Nigeria (1:12,221), 2.7% of Burundi (1:894), 1.9% of Belgium (1:1,500), 1.6% of Rwanda (1:1,745), 1.2% of Germany ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
