Cobia

cobia Rachycentron canadum, a fish of the open seas found in tropical waters all round the world except for the E. Pacific. Exceptionally, it may reach a length approaching 2 m (6') and a weight of 40 kg (100 lb). The back and sides of adults are brown, with silvery stripes running along them. These stripes are presumably responsible for the common name ‘sergeant-fish’. Another common name is ‘crab-eater’; bestowed because this voracious fish does eat crustaceans, including crabs, with enthusiasm, although its diet includes other fish. In Australia it is officially known as ‘black kingfish’.