Chloroscombrus | |
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Atlantic bumper, Chloroscombrus chrysurus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Carangiformes |
Family: | Carangidae |
Subfamily: | Caranginae |
Genus: | Chloroscombrus Girard, 1858 |
Type species | |
Micropteryx cosmopolita Agassiz, 1829 | |
Species | |
See text |
Chloroscombrus is a genus containing two species of tropical to temperate water marine fish in the jack and horse mackerel family Carangidae. Both members are commonly known as bumpers or bumperfish, with one species endemic to the Atlantic and the other to the eastern Pacific. They have a convex ventral profile compared to most other carangids, with small oblique mouths and low dorsal and anal fins. Phylogenetic studies have found they are most closely related to the jacks of the genus Hemicaranx, with these genera plus Selar, Selaroides and possibly Alepes , making up a clade within the Caranginae subfamily. They are predatory fish which live in both inshore and offshore environments ranging from estuaries to the edge of the continental shelf, and are of moderate importance to fisheries.
Chloroscombrus is a genus containing two extant species. It is part of the jack family, Carangidae, which in turn is part of the order Carangiformes. [1] Recent phylogenetic studies using molecular information have placed Chloroscombrus in the subfamily Caranginae (or the tribe Carangini). [2] The most recent phylogenetic study found the genus is very closely related to Hemicaranx , with the genera Selar , Selaroides and possibly Alepes also placed in a clade within the Carangini. The study also strongly supported the monophyly of Chloroscombrus [3]
Chloroscombrus was created by the French naturalist Charles Frédéric Girard in 1858 to accommodate a 'new' species he had described; Chloroscombrus caribbaeus, making this the original type species. [4] For some reason, probably a lack of a type specimen for C. carribaeus, David Starr Jordan and Gilbert redesignated Micropteryx cosmopolita as the type species of Chloroscombrus, which currently remains the accepted type species. [5] However, both these names were subsequently found to be junior synonyms of Linnaeus' Scomber chrysurus, effectively making Chloroscombrus chrysurus the type species. The name is derived from the Greek words chloros; meaning green and skombros; meaning fish, particularly mackerel. [6]
No species pertaining to Chloroscombrus are known from the fossil record.
There are currently two recognized species in this genus though they may be conspecific, although no detailed study has been undertaken to prove such a relationship.: [7]
Image | Scientific name | Common name | Distribution |
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Chloroscombrus chrysurus (Linnaeus, 1766) | Atlantic bumper | From Massachusetts, south to Florida, in the Caribbean, off Bermuda, and the Gulf of Mexico. Their range continues south to the coast of Uruguay. In the eastern Atlantic, the Atlantic bumper are known from the coast of Mauritania to Angola | |
Chloroscombrus orqueta D. S. Jordan & C. H. Gilbert, 1883 | Pacific bumper | southern California to the Gulf of California to central Peru. | |
Both species of Chloroscombrus are small- to medium-sized fishes, growing to maximum known lengths of around 30 cm (C. orqueta) [8] and 65 cm (C. chrysurus). [9] The genus is easily distinguished among most of the other carangid genera, although the bigeye scad, Selar crumenophthalmus, may be confused with the Pacific member of the genus. [10] The distinguishing features of the genus include a more convex ventral profile than the dorsal profile, giving a very rounded underside appearance, a distinct black saddle on the upper part of the caudal peduncle, a small oblique mouth and a relatively small pupil diameter. [11] [12] The rest of the general body plan of the genus is similar to other carangids, with two separate, rather low dorsal fins; the first consisting of 8 spines and the second of 1 spine and 25 to 29 soft rays. The anal fin is also low, consisting of 2 detached spines anteriorly, followed by 1 spine and 25 to 29 soft rays. [12] The lateral line is moderately curved anteriorly, with six to 14 weak scutes on the straight section. The chests are completely scaled, and the jaws contain bands of fine villiform teeth. [11] The species are silvery in colour, with the dorsal surface ranging from blue-green to dark metallic blue. C. orqueta has a distinct black spot on the upper edge of the operculum, while C. chrysurus does not. [11] [12] It is also known under local common name plat plat.
The two species in the genus are restricted to the tropical and temperate waters of the Atlantic and east Pacific Oceans, with C. chrysurus inhabiting both the east Americas and west African/European coasts of the Atlantic [12] and C. orqueta inhabiting the Central American coastline of the east Pacific. [11]
Both species are schooling coastal species, found on the continental shelf leading pelagic lifestyles. They are commonly found in shallow water environments including beaches, lagoons and estuaries. They are also rarely found in open ocean environments, commonly associated with floating objects, such as jellyfish. [11] [12]
Both species of Chloroscombrus are predatory, taking a variety of small prey, including fish, cephalopods and zooplankton, with juveniles generally taking more planktonic prey than adults. [9] Reproduction in the genus has been studied, as have the larval stages of both species, with juveniles often found in more oceanic waters. [12]
No specific fishery exists for either species, although they are taken by trawls, seines and hook-and-line methods, and sold fresh, salted or frozen at market. [11] [12] Neither species is considered a good gamefish, although are taken by anglers occasionally, [10] and are considered rather dry table fare. [12]
The Pacific jack mackerel, also known as the Californian jack mackerel or simply jack mackerel, is an abundant species of pelagic marine fish in the jack family, Carangidae. It is distributed along the western coast of North America, ranging from Alaska in the north to the Gulf of California in the south, inhabiting both offshore and inshore environments. The Pacific jack mackerel is a moderately large fish, growing to a maximum recorded length of 81 cm, although commonly seen below 55 cm. It is very similar in appearance to other members of its genus, Trachurus, especially T. murphyi, which was once thought to be a subspecies of T. symmetricus, and inhabits waters further south. Pacific jack mackerel travel in large schools, ranging up to 600 miles offshore and to depths of 400 m, generally moving through the upper part of the water column.
The smallmouth scad, is a species of tropical marine fish in the jack family Carangidae. The species is endemic to northern Australia, inhabiting primarily inshore waters. It is similar to other scads in the genus Alepes, and is distinguished by a well-developed posterior adipose eyelid, as well as fin membrane spotting and gill raker counts. It is not a large species, with the maximum length reported to be 29.5 cm. It feeds primarily on a variety of small invertebrates, and is of very minor economic importance.
The shrimp scad, is a species of widespread tropical marine fish of the jack family, Carangidae. The shrimp scad is widely distributed in the tropical and subtropical western Indian Ocean and areas of the eastern Pacific Ocean, ranging from South Africa in the west to Hawaii in the east, including Japan and Australia to the north and south. The species is commonly found on inshore reefs and sandy substrates. It has the common body profile of a scad, and may be difficult to differentiate from others in the genus Alepes. It is one of the larger scads, growing to 40 cm, but often is encountered at much smaller sizes. The shrimp scad often forms large schools, and is carnivorous, consuming a variety of crustaceans and small fish. It is of moderate importance to fisheries throughout its range.
The rainbow runner, also known as the rainbow yellowtail, Spanish jack and Hawaiian salmon, is a common species of pelagic 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 60 cm (24 in), and 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 methods, and is a well-regarded table fish. Large numbers of the species are taken as bycatch in tuna- and shark-fishing operations and marketed.
The blackfin scad is a species of tropical marine fish of the jack family Carangidae. The species inhabits inshore waters throughout the Indo-Pacific region, although is rare in the western Indian Ocean. It is not a large species, with the largest reported capture being 25 cm, and it is distinguished readily from similar species by the prominent black dorsal fin. It is a predator which feeds on planktonic crustaceans, but little else is known of its biology. The blackfin scad is a minor food fish throughout its range, and is highly valued in Cambodia and Thailand.
The cleftbelly trevally, also known as the cleftbelly kingfish, Kuweh trevally or thin crevalle, is a species of tropical marine fish of the jack family, Carangidae. The species inhabits coastal waters throughout the Indo-West Pacific region from South Africa in the west to Japan in the east, often found near the water's surface. The cleftbelly trevally is the only member of the genus Atropus and is distinguished by a number of anatomical characteristics, with a deep median groove in the belly giving the species its common name. It is not a large fish, growing to a maximum recorded length of 26.5 cm. Cleftbelly trevally are predatory fish, taking a variety of small crustaceans and fish. The species is of minor importance to fisheries throughout its range.
The horse-eye jack, also known as the big-eye jack, is a game fish and minor commercial fish in the family Carangidae. Its appearance is similar to that of the crevalle jack, although the horse-eye jack's head is not as blunt. The horse-eye jack is known to feed on smaller fish and on many invertebrates, such as shrimp and crab.
The razorbelly scad is a small species of tropical marine fish in the jack family, Carangidae. The species inhabits coastal waters in the Indo-Pacific, from Pakistan in the west to Japan and Australia in the east, often found over reefs. The razorbelly scad has a complex taxonomic history, and even recently has had its position in the genus Alepes challenged, but appears to be stable after a molecular phylogeny study supported its placement in Alepes. It is very similar to other scads in the same genus, but is readily identified by its unique teeth. Razorbelly scad are predatory fish, taking a variety of crustaceans and shrimps, and show a change in feeding intensity over the year. Reproduction and development have been extensively studied in India, where spawning occurs in a single event from January to September. The species is commonly taken in tropical fisheries, where it is marketed fresh or dried.
Alepes is a genus containing five extant species of tropical marine fishes in the jack family, Carangidae. They are commonly known as scads, a term applied to many genera of carangid fishes. Their body form, however, differs from these other scads by being much more ovate in shape, more similar to the larger jacks taken as game fish, although scads are generally much smaller. They are found in coastal waters throughout the Indo-West Pacific region.
The herring scad, is a common species of tropical marine fish in the jack family Carangidae. The species inhabits the surface waters of coastal regions throughout the Indo-West Pacific region, feeding on a variety of crustaceans and small fishes. It is the largest fish of the scad genus Alepes, growing to a recorded length of 56 cm. The herring scad is identified among the genus Alepes by its more numerous and smaller scutes and the number of gill rakers on the first arch. It is of minor importance to fisheries throughout its range.
The yellowtail scad, is an abundant species of small inshore marine fish of the jack family, Carangidae. The species is widespread in the Indo-Pacific region from east Africa in the west to Hawaii in the east, extending north to Japan and south to Australia. The yellowtail scad is the only member of the monotypic genus Atule and is distinguished from similar species by a well-developed adipose eyelid and finlet-like extensions of the last rays of the dorsal and anal fins. It inhabits coastal areas such as bays and coral reefs, preying on small fishes and crustaceans. Spawning has been well studied in Hawaii, where fish enter bays to spawn, releasing up to 161,000 eggs each between March and October. The yellowtail scad is an important component of fisheries throughout its range, taken by a number of netting and hook-and-line methods. It is a prized food fish in some regions and is cooked or preserved by a variety of methods.
The vadigo, Campogramma glaycos, is a species of medium-sized coastal marine fish in the jack family, Carangidae. The species is distributed throughout the eastern Atlantic Ocean from the British Isles in the north to Senegal in the south, also entering the western Mediterranean Sea. The vadigo is similar in form to both the leatherjacks and the queenfish, but can be distinguished by its scaleless chest and a broad, rounded upper jaw. It is a predatory fish, preying mostly on smaller schooling fishes. The species was initially classified under the genus Centronotus before being transferred to its own monotypic genus of Campogramma. The vadigo is of minor commercial importance throughout its range, and is also considered to be a game fish.
Carangoides is a genus of tropical to subtropical marine fishes in the jack family, Carangidae. They are small- to large-sized, deep-bodied fish characterised by a certain gill raker and jaw morphology, often appearing very similar to jacks in the genus Caranx. They inhabit the subtropical and tropical regions of the Indian, Pacific, and Atlantic Oceans, often occupying coastal areas, including reefs, bays, and estuaries, rarely venturing far offshore. They are all predatory fishes, taking a variety of smaller fishes, crustaceans and cephalopods as prey. The genus was first erected in 1851 by Pieter Bleeker for an unknown taxon and currently contains 20 species. Many make up significant proportions of various fisheries, although a number of ciguatera cases have been attributed to them.
The longfin trevally, also known as the longfin kingfish, longfin cavalla or armed trevally, is a species of inshore marine fish in the jack family, Carangidae. The species is common in tropical to subtropical waters of the Indo-Pacific, ranging from South Africa in the west to Japan in the east, typically inhabiting inshore reefs and bays. The species is easily distinguished by its elongate dorsal and anal fin lobes and filamentous dorsal rays, as well as its scaleless breast. Longfin trevally are pelagic predators, taking a variety of small fish, cephalopods and crustaceans, and reach sexual maturity at around 21 cm. The species has a maximum known length of 57 cm and weight of 3.5 kg. The longfin trevally has a very complex taxonomic history which is closely intertwined with another currently valid species, Carangoides ciliarius, which may yet prove to be synonymous. Longfin trevally are of minor importance to fisheries throughout their range and are considered good table fish, and are occasionally taken by anglers.
Caranx is a genus of tropical to subtropical marine fishes in the jack family Carangidae, commonly known as jacks, trevallies and kingfishes. They are moderate- to large-sized, deep-bodied fishes which are distinguished from other carangid genera by specific gill raker, fin ray and dentition characteristics. The genus is represented in the Pacific, Indian and Atlantic Oceans, inhabiting both inshore and offshore regions, ranging from estuaries and bays to deep reefs and offshore islands. All species are powerful predators, taking a variety of fish, crustaceans and cephalopods, while they in turn are prey to larger pelagic fishes and sharks. A number of fish in the genus have a reputation as powerful gamefish and are highly sought by anglers. They often make up high amounts of the catch in various fisheries, but are generally considered poor to fair table fishes.
The whitefin trevally, also known as the horse trevally, is a species of deep water offshore fish in the jack family Carangidae. The species inhabits the tropical to temperate waters of the Indo-Pacific and central Pacific, ranging from South Africa in the west to Hawaii in the east. The whitefin trevally is a moderate-sized fish, growing to 37 cm, and is distinguished by a number of morphological traits, including fin size, gill raker count, and colour. It inhabits the continental shelf and slope at depths to 200 m over sand and mud substrates, where it preys on fish, crustaceans, and cephalopods. Studies in Japan indicate a length at sexual maturity of 17.4 cm on average, with spawning occurring between May and October, with each individual spawning multiple times. Whitefin trevallies are of high importance to fisheries in Japan, where they are taken by trawlers, although the catch numbers have halved since the 1980s. It is of minor importance elsewhere throughout its range, but is considered a good table fish.
The bumpnose trevally, also known as the bumpnose kingfish or onion kingfish, is a species of relatively small inshore marine fish classified in the jack family Carangidae. The bumpnose trevally is fairly common in the tropical and subtropical waters of the Indo-west Pacific region, ranging from South Africa in the west to Japan and Samoa in the east. It is a small species by carangid standards, reaching a maximum known length of 32 cm, and can be distinguished from the similarly shaped Carangoides armatus by a distinct 'bump' on the snout, which gives the fish its common name. The species inhabits coastal waters, often living along bays and beaches, where it takes shrimp, small crabs, and juvenile fish as prey. The bumpnose trevally is of minor importance to fisheries throughout its range, taken by hook and line, trawls, and seine nets. It is also of minor importance to anglers, taken by baits from beaches and piers, and is considered a modest table fish.
The fringefin trevally, also called fringe-finned trevally, round-finned trevally or reef herring, is a species of inshore marine fish classified in the jack and horse mackerel family Carangidae. A relatively small fish, the fringefin trevally is known to reach 40 cm (16 in), but is mostly encountered at lengths less than 25 cm (9.8 in). The fringefin trevally has an ovate body, with distinctive orange-yellow fins and a black opercular spot. The dental patterns of the species distinguish it from the closely related scads of the genus Alepes. Males have characteristic elongated dorsal and anal fins which produce a series of trailing filaments. The fringefin trevally is restricted to the waters of the Indo-Pacific, ranging from northern Australia to Papua New Guinea and eastern Indonesia. An inshore species, it is found in coastal and estuarine environments and exhibits daily and seasonal movements. The fringefin trevally is predatory, taking crustaceans as prey. The species is often taken as bycatch in prawn trawls and occasionally taken by anglers.
The yellowstripe scad, also known as the yellowstripe trevally, yellow-banded trevally, smooth-tailed trevally, slender-scaled trevally and slender trevally, is a species of small inshore fish in the jack and horse mackerel family Carangidae, and the only member of the genus Selaroides. The yellowstripe trevally is distributed throughout the tropical waters of the Indo-West Pacific region, ranging from the Persian Gulf in the west to Vanuatu and New Caledonia in the east. The species is distinguished by its prominent lateral yellow band, and differs from the scads of the genus Selar in having a smaller eye and different dentition. Although the yellowstripe scad reaches a maximum recorded length of 22 cm, it is normally encountered at sizes less than 15 cm. Phylogenetic studies indicate the yellowstripe scad is closely related to the scads of the genus Selar, although its exact placement in the family Carangidae is less well agreed upon.
The Pacific bumper is one of two game fish in the genus Chloroscombrus, from the subfamily Caranginae of the family Carangidae, part of the order Carangiformes.