Sergeant Major – Discover Fishes https://www.floridamuseum.ufl.edu/discover-fish/species-profiles/sergeant-major/
Abudefduf saxatilis This small, flat, oval shaped reef fish has five distinct black bars on its sides. While in sandy areas and over reefs, it is in its light phase, generally silvery gray with a yellow sheen along its upper sides; and when hiding in a cave or crevice, it enters its dark phase, w
hundreds for feeding, but during spawning season, the male will aggressively guard his nest