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Brassy trevally
The brassy trevally, ''Caranx papuensis'' (also known as the brassy kingfish, Papuan trevally, tea-leaf trevally and green back trevally) is a species of large marine fish classified in the jack family, Carangidae. The brassy trevally is distributed throughout the tropical waters of the Indian and West Pacific Oceans, ranging from South Africa in the west to the Marquesas Islands in the east, including Australia to the south and Japan in the north. The brassy trevally is best distinguished by its colouration, having small black spots scattered above and below its lateral line, with a narrow white outside edge to its lower caudal fin. The species grows to a known maximum length of 88 cm and a weight of at least 6.4 kg. It predominantly inhabits both coastal and offshore reefs, as well as inshore lagoons, bays and even estuarine waters as a juvenile. It is a predatory species, moving either individually or small schools, where it takes small fish and occasionally squid and crustaceans. Nothing is known of its reproductive cycle. The brassy trevally is not of great importance to commercial fisheries, but is taken in many netting and hook and line operations throughout its range. It is valued as a gamefish by anglers and spearfishermen, and is considered an excellent table fish.
==Taxonomy and naming==
The brassy trevally is classified within the genus ''Caranx'', one of a number of groups known as the jacks or trevallies. ''Caranx'' itself is part of the larger jack and horse mackerel family Carangidae, a group of percoid fishes in the order Perciformes.
The species was first scientifically described by the Australian zoologists Haynes Gibbs Alleyne and William John Macleay in 1877 based on a specimen collected from Hall Sound off Papua New Guinea which was designated to be the holotype. They named the species ''Caranx papuensis'', with the specific epithet taking its name from Papua New Guinea where the holotype was taken. They referred the species to the genus ''Caranx'', where it has remained. The species was independently redescribed twice; the first by Samuel Garman, who applied the name ''Caranx regularis'' and then by J.L.B. Smith with the name ''Caranx celetus''. The species was apparently widely confused with the now dubious ''Caranx sansun'', a move which resulted in Smith trying to resolve the taxon by renaming the species that had been identified as ''C. sansun'', which led to several now defunct junior synonyms.
The species is commonly referred to as the 'brassy trevally', 'tea-leaf trevally' or 'green back trevally' in reference to its colouration, while 'Papuan trevally' is used in reference to the specific epithet.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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