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Gymnosarda
The dogtooth tuna ''Gymnosarda unicolor'', also known as white tuna, is a species of pelagic marine fish which belongs to the family Scombridae. Description The dogtooth tuna can reach a length of in males and a weight of .Collette, B.B. and C.E. Nauen, 1983. FAO Species Catalogue. Vol. 2. Scombrids of the world. An annotated and illustrated catalogue of tunas, mackerels, bonitos and related species known to date. Rome: FAO. FAO Fish. Synop. 125(2):137 p. The average length commonly observed is around . They have 12 to 14 dorsal soft rays and 12 to 13 anal soft rays. The lateral line undulates strongly. These large tunas have a streamlined shape and a distinctive body coloration: brilliant blue green on the back, silvery on the side, and whitish on the belly, with two white tips on the two back fins close to the caudal peduncle. They always swim with open jaws. The upper jaw of the large mouth reaches the eye. Distribution The dogtooth tuna is widespread throughout the tropical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scombrid
The mackerel, tuna, and bonito family, Scombridae, includes many of the most important and familiar food fishes. The family consists of 51 species in 15 genera and two subfamilies. All species are in the subfamily Scombrinae, except the butterfly kingfish, which is the sole member of subfamily Gasterochismatinae. Scombrids have two dorsal fins and a series of finlets behind the rear dorsal fin and anal fin. The caudal fin is strongly divided and rigid, with a slender, ridged base. The first (spiny) dorsal fin and the pelvic fins are normally retracted into body grooves. Species lengths vary from the of the island mackerel to the recorded for the immense Atlantic bluefin tuna. Scombrids are generally predators of the open ocean, and are found worldwide in tropical and temperate waters. They are capable of considerable speed, due to a highly streamlined body and retractable fins. Some members of the family, in particular the tunas, are notable for being partially endothermic ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scombridae
The mackerel, tuna, and bonito family, Scombridae, includes many of the most important and familiar food fishes. The family consists of 51 species in 15 genera and two subfamilies. All species are in the subfamily Scombrinae, except the butterfly kingfish, which is the sole member of subfamily Gasterochismatinae. Scombrids have two dorsal fins and a series of finlets behind the rear dorsal fin and anal fin. The caudal fin is strongly divided and rigid, with a slender, ridged base. The first (spiny) dorsal fin and the pelvic fins are normally retracted into body grooves. Species lengths vary from the of the island mackerel to the recorded for the immense Atlantic bluefin tuna. Scombrids are generally predators of the open ocean, and are found worldwide in tropical and temperate waters. They are capable of considerable speed, due to a highly streamlined body and retractable fins. Some members of the family, in particular the tunas, are notable for being partially endothermic (warm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decapterus
''Decapterus'' is a genus of marine fishes of jack family, Carangidae, commonly known as mackerel scads, round scads, or horse mackerel. They are found throughout the world. Species Currently, 10 or 12 recognized species are found in this genus: * ''Decapterus akaadsi'' ( T. Abe), 1958 * '' Decapterus koheru'' (Hector, 1875) (koheru) * ''Decapterus kurroides'' (Bleeker, 1855) (redtail scad) * ''Decapterus macarellus'' (G. Cuvier, 1833) (mackerel scad) * ''Decapterus macrosoma'' (Bleeker, 1851) (shortfin scad) * ''Decapterus maruadsi'' (Temminck & Schlegel, 1843) (Japanese scad) * ''Decapterus muroadsi'' (Temminck & Schlegel, 1844) (amberstripe scad) * '' Decapterus punctatus'' (G. Cuvier, 1829) (round scad) * ''Decapterus russelli'' ( Rüppell, 1830) (Indian scad) * ''Decapterus tabl'' ( Berry, 1968) (roughear scad) * ''Decapterus smithvanizi'' (Seishi Kimura, Katahira & Kuriiwa, 2013) * ''Decapterus scombrinus'' (Valenciennes Valenciennes (, also , , ; nl, label=also Dut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rainbow Runner
The rainbow runner (''Elagatis bipinnulata''), also known as the rainbow yellowtail, Spanish jack and Hawaiian salmon, is a common species of pelagic ocean, marine fish of the jack family, Carangidae. The species is widespread throughout the tropical and subtropical waters of the world, inhabiting both coastal and offshore areas. The species is the only member of the genus ''Elagatis'', which was created 15 years after its initial description, and is closely related to the amberjacks. The rainbow runner is easily distinguished by its body shape, and the brilliant colouration which gives the fish its name. It is a fast-swimming predator, taking small fish, cephalopods, and a wide variety of planktonic crustaceans. The species reaches sexual maturity around , and Spawn (biology), spawning takes place at different times, with some populations spawning year round, while others only spawn at certain times of the year. The species is a well known game fish, taken by a variety of fishing m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterocaesio
''Pterocaesio'' is a genus of marine ray-finned fish, fuiliers belonging to the family Caesionidae. They are native to the Indian Ocean and the western Pacific Ocean. Taxonomy ''Pterocaesio'' was described as a genus in 1876 by the Dutch ichthyologist Pieter Bleeker with Franz Steindachner's ''Caesio multiradiatus'' as the type species. This taxon was subsequently shown to be a synonym of ''Caesio tile'' which had been described by Georges Cuvier in 1830. The generic name is a compound of ''ptero'' meaning "fin" and the genus name ''Caesio''. Bleeker did not give an explanation of his name but it may be because the type species ''P. tile'' has a higher number of rays in the dorsal fin. 21, compared to 13-18 in ''Caesio''. Three subgenera have been proposed for ''Pteroceasio''. Species Currently, 12 species in this genus are recognized, and have been divided into subgenera by some authorities as follows: * Subgenus ''Pterocaesio'' ** ''Pterocaesio tile'' (Cuvier, 1830) (dark-ban ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrhilabrus
''Cirrhilabrus'' is a genus of fish in the family (biology), family Labridae native to reefs in the Indian Ocean, Indian and Pacific Ocean, commonly kept in aquarium, aquaria. Species There are currently 60 recognized species in this genus: * ''Cirrhilabrus adornatus'' John Ernest Randall, J. E. Randall & Andreas Kunzmann, Kunzmann, 1998 (Red-fin fairy-wrasse) * ''Cirrhilabrus africanus'' Benjamin C. Victor, Victor, 2016 (African long-fin fairy-wrasse)Victor, B.C. (2016)Two new species in the spike-fin fairy-wrasse species complex (Teleostei: Labridae: ''Cirrhilabrus'') from the Indian Ocean.''Journal of the Ocean Science Foundation, 23: 21–50.'' * ''Cirrhilabrus aurantidorsalis'' Gerald Robert Allen, G. R. Allen & Rudie Hermann Kuiter, Kuiter, 1999 (Orangeback fairy-wrasse) * ''Cirrhilabrus balteatus'' John Ernest Randall, J. E. Randall, 1988 (Girdled fairy-wrasse) * ''Cirrhilabrus bathyphilus'' John Ernest Randall, J. E. Randall & Bronson Hiroki Nagareda, Nagareda, 2002 (Deep- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caesio
''Caesio'' is a genus of marine ray-finned fish, fusiliers belonging to the family Caesionidae. They are native to the Indian Ocean and the western Pacific Ocean, although one species has invaded the eastern Mediterranean Sea through the Suez Canal by Lessepsian migration. Taxonomy ''Caesio'' was created in 1801 by the French naturalist Bernard Germain de Lacépède when he described ''Caesio caerilaurea''. In 1876 the Dutch ichthyologist Pieter Bleeker designated ''C. caerulaurea'' as the type species of the genus ''Caesio''. The genus name, ''Caesio'', means ”blue”. Species Currently, 9 species in this genus are recognized, organised into three subgenera according to some authorities: * Subgenus ''Caesio'' ** '' Caesio caerulaurea'' Lacépède, 1801 – blue and gold fusilier ** ''Caesio striata'' Rüppell, 1830 – striated fusilier ** '' Caesio varilineata'' K. E. Carpenter, 1987 – variable-lined fusilier ** ''Caesio xanthalytos'' Holleman, Conn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat
In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical manifestation of its ecological niche. Thus "habitat" is a species-specific term, fundamentally different from concepts such as environment or vegetation assemblages, for which the term "habitat-type" is more appropriate. The physical factors may include (for example): soil, moisture, range of temperature, and light intensity. Biotic factors will include the availability of food and the presence or absence of predators. Every species has particular habitat requirements, with habitat generalist species able to thrive in a wide array of environmental conditions while habitat specialist species requiring a very limited set of factors to survive. The habitat of a species is not necessarily found in a geographical area, it can be the interior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coral Reef
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and jellyfish. Unlike sea anemones, corals secrete hard carbonate exoskeletons that support and protect the coral. Most reefs grow best in warm, shallow, clear, sunny and agitated water. Coral reefs first appeared 485 million years ago, at the dawn of the Early Ordovician, displacing the microbial and sponge reefs of the Cambrian. Sometimes called ''rainforests of the sea'', shallow coral reefs form some of Earth's most diverse ecosystems. They occupy less than 0.1% of the world's ocean area, about half the area of France, yet they provide a home for at least 25% of all marine species, including fish, mollusks, worms, crustaceans, echinoderms, sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
School (fish)
In biology, any group of fish that stay together for social reasons are shoaling, and if the group is swimming in the same direction in a coordinated manner, they are schooling. In common usage, the terms are sometimes used rather loosely. About one quarter of fish species shoal all their lives, and about one half shoal for part of their lives. Fish derive many benefits from shoaling behaviour including defence against predators (through better predator detection and by diluting the chance of individual capture), enhanced foraging success, and higher success in finding a mate. It is also likely that fish benefit from shoal membership through increased hydrodynamic efficiency. Fish use many traits to choose shoalmates. Generally they prefer larger shoals, shoalmates of their own species, shoalmates similar in size and appearance to themselves, healthy fish, and kin (when recognized). The oddity effect posits that any shoal member that stands out in appearance will be preferen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Predator
Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill the host) and parasitoidism (which always does, eventually). It is distinct from scavenging on dead prey, though many predators also scavenge; it overlaps with herbivory, as seed predators and destructive frugivores are predators. Predators may actively search for or pursue prey or wait for it, often concealed. When prey is detected, the predator assesses whether to attack it. This may involve ambush or pursuit predation, sometimes after stalking the prey. If the attack is successful, the predator kills the prey, removes any inedible parts like the shell or spines, and eats it. Predators are adapted and often highly specialized for hunting, with acute senses such as vision, hearing, or smell. Many predatory animals, both vertebrate and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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