Also known as Bullseye, Copper Sweeper, Pempherid.
Found in schools during the day sheltering in caves, crevices under ledges, around harbours and shipwrecks out hunting high above the bottom at night over shallow coral and rocky reefs.
They feed nocturnally on zooplankton.
Length - 15cm
Depth - 3-30m
Widespread Western Atlantic, Caribbean
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/3593