Priacanthus hamrur is common at Kwajalein. During the day on the seaward reef, they are seen scattered along the slope hovering over holes in the reef, into which they retreat when approached. On lagoon pinnacles, they may be similarly scattered, or they may form sometimes large schools that move around on the slope of the pinnacle. At night they disperse to feed. The fish can change color from silver to red quickly, or can even be banded red and silver.
They have highly reflective eyes that sometimes bounce back the light from camera's flash giving the fish an eerie look.
Having its parasites picked by a cleaner wrasse, Labroides dimidiatus, in the two photos below.
Created 6 December 2017