Also known as Suez Fusilier.
Found in large schools feeding midwater over coastal coral reefs.
They feed on zooplankton.
Varies in colour from blue to red with night and day.
Length - 35cm
Depth - 2-25m
Indian Ocean - Red Sea to Arabian Sea
Fusiliers are close relatives of snappers, but are much smaller and more slender.
Schools of fusiliers often have other species mixed in.
Although their colour is predominately yellow/blue, at night and when resting their colours change to red/green. Ref: https://www.fishbase.se/summary/922