Indian threadfish
| Indian threadfish | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Suborder: | Percoidei |
| Superfamily: | Percoidea |
| Family: | Carangidae |
| Genus: | Alectis |
| Species: | A. indica |
| Binomial name | |
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Alectis indica (Rüppell, 1830) |
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| Approximate distribution of the Indian threadfish | |
| Synonyms | |
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The Indian threadfish (Alectis indica) (also known as the Indian threadfin, diamond trevally, mirror fish and plumed trevally) is a large species of coastal marine fish of the jack family, Carangidae. The species is widespread in the waters of the tropical Indo-West Pacific Ocean, ranging from east Africa to India, Asia, Indonesia and Australia. Adult fish tend to inhabit coastal waters over reefs down to 100 m in depth, while juveniles inhabit a variety of environments including estuaries and seagrass beds. The Indian threadfish is similar to the other two species in the genus Alectis, with a slight in the profile of the head the most obvious distinguishing feature. It is a large species, growing to 165 cm and 25 kg in weight. The species is carnivorous, consuming fishes, cephalopods and crustaceans. The Indian threadfin is of minor commercial importance, and has been the subject of aquaculture in Singapore.
The Indian threadfish is one of three members of the diamond trevally genus Alectis, which itself is one of 33 genera encapsulated in the jack family, Carangidae. The Carangidae are perciform fishes in the suborder Percoidei.
The species was first recognized and scientifically described by the German naturalist Eduard Rüppell in 1830 under the name Scyris indicus, with the type specimen collected from the Red Sea. After Rüppell's designation, a number of other naturalists unknowingly re-described the species, with the names Hynnis insanus, Caranx gallus and Hynnis momsa applied to the species by the various authors. Rüppell's original classification was also revised; the fish was first placed in Seriolichthys, and finally in the senior genus Alectis by James Douglas Ogilby in 1913. The species' name has been given as Alectis indicus in the literature, however the genus Alectis is feminine and thus the spelling indica is the correct one.
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