Description

Also known as Blackspot Sweeper, Bronze Sweeper, Bullseyes, Cave Sweeper, Hatchet Fish, Keeled Bullseye, Keeled Sweeper, Oualan Bullseye, Oualan Sweeper, Schooling Copper Sweeper, Silver Sweeper.

Found in schools, during the day in caves, harbours, under ledges and around shipwrecks, dispersing at night, hunting for food, high above the bottom, over sheltered lagoons, reef margins and seaward reefs.
They feed nocturnally on benthic and planktonic crustaceans, fish and invertebrates.
Length - 22cm
Depth - 0-35m
Widespread Indo-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.se/summary/5802