Plectorhinchus gibbosus (Lacepède 1802) —Humpback sweetlips

Status at New Ireland. First recorded from St. Mathias and Kavieng, New Ireland as Diagramma affine by Duncker & Mohr (1929: 61), based on ZMH 11987-11988. Specimens observed at Kavieng fish market in 2004– 2005 by Jeff Kinch during CFMDP Survey, and by Barry C. Russell on 21 June 2014 .

Distribution and habitat. New Ireland: 2, 4.—General distribution: East and South Africa, Madagascar and weastern Mascarenes east to Caroline and Society islands, north to Taiwan, south to Exmouth Gulf (Western Australia) and Norfolk Island. Adults solitary, in coastal, lagoon and seaward reefs; juveniles in estuaries, mangrove habitats, and freshwater streams, 0–25 m depth. Freshwater, transitional water and marine.