Also known as Black-edged Sweeper, Black-tipped Bullseye, Bullseye, Green-back Bullseye, Hatchet Fish, Molucca Sweeper.
Found in schools, during the day sheltering in caves, under ledges, harbours and in shipwrecks, dispersing at night to hunt for food, over coral and rocky reefs.
They feed on crustaceans and worms.
Length - 15cm
Depth - 10-50m
Widespread Indo-West Pacific
Sweepers school during the day, but at night they float high above the bottom to hunt for larger zooplankton.
Several species are triangular shaped. Ref: https://www.fishbase.in/summary/Pempheris-molucca.html