Grammatorcynus bilineatus (Rüppell 1836) —Double-lined mackerel (Fig. 151)

Status at New Ireland. First recorded from Kulineua River, New Hanover by Munro (1958: 262–263); reported from St. Mathias Group and Kavieng, New Ireland by Collette & Gillis (1992: 45). Specimens photographed in Kavieng region on 1 June 2013 during ACIAR Aquarium Survey; specimens observed by at Kavieng fish market by Barry C. Russell on 7 and 28 June 2014. Specimens photographed at Lissenung Island by Dietmar Amon on 6 Apr. 2008; others photographed at St. KVG24 (off northwestern Bauddisson Island) by Serge Andréfouët on 22 Aug. 2014.

Distribution and habitat. New Ireland: 1, 2, 4.—General distribution: Red Sea east to Marshall Islands and Fiji, north to Ryukyu Islands, south to northern Australia and New Caledonia. Pelagic, near coral reefs, 15–50 m depth. Marine.