Caranx gallus; Print; The Indian threadfish (Alectis indica); also known as the Indian threadfin; diamond trevally; mirror fish or 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 concavity 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 threadfish is of minor commercial importance; and has been the subject of aquaculture in Singapore.; 1700-1880