Island trevally (Ferdauia orthogrammus) is a saltwater species recorded in Singapore, Malaysia. It is mainly found over reef, at depths of 0–168 m.
Scientific name: Ferdauia orthogrammus · Water: Saltwater
Size: up to 75 cm
The island trevally is a carangid. Adults are pelagic and abundant around oceanic islands, but absent from neritic waters. They occur alone, in pairs or in small schools, and schools frequent sandy bottoms, sandy lagoon channels and seaward reefs, where they pick small crustaceans out of the sand. The species is oceanodromous. It occurs in tropical seas between roughly 35 degrees north and 34 degrees south, from the surface to about 168 m. It reaches about 75 cm total length, commonly 40 cm fork length, and up to about 6.6 kg. It supports commercial fisheries and is a game fish, marketed fresh and also dried or salted, in the medium price band, with a trophic level of 4.5, moderate fishing vulnerability at 39 of 100, and medium resilience.
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