Shark mackerel (Grammatorcynus bicarinatus) is a saltwater species recorded in Taiwan. It is mainly found over reef, at depths of 15–50 m.
Scientific name: Grammatorcynus bicarinatus · Water: Saltwater
Size: up to 112 cm
The shark mackerel is a scombrid that forms schools near individual bays and reefs, moving onto shallow reef flats on the rising tide to feed on the small fish that gather there. Its range is restricted to the Western Pacific: the northern coasts of Australia, west to Shark Bay in Western Australia and along the Queensland east coast south to northern New South Wales, with recent records from the Gulf of Papua and the Loyalty Islands. It is used as a food fish, is a commercial and game species, and sells at a very high price. Maximum length is about 112 cm fork length and it can weigh 13.5 kg. It lives between about 15 and 50 m, is a subtropical species, and is recorded from 12°S to 37°S and 110°E to 157°E. Trophic level is 4.5, fishing vulnerability moderate to high at 53 of 100, and resilience medium. IUCN lists it as least concern.
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