We found this spotted trigger fish underneath a floating buoy. Apparently not known in the Lord Howe Island waters
ID based on distinctive silhouette and swimming style. Screen shot from YouTube video here: https://youtu.be/s0tI59WQoEw?t=14m41s
Underwater coral reef
Image credit: Marie Fontaine from Canada
(EN) Arrowhead Soapfish - (FR) Poisson-savon de Chabanaud
Belonoperca chabanaudi, Komba Island, Indonesia
Observation for the fish at front