Males have an olive/brown base color under a spectacular blue/green scale patterning. A series of vivid blue/green spots are typically scattered throughout the lower face and gill area, lending this fish its nickname “blue-speckled monster.”
Females are shorter and stockier than males, and lack much of the blue coloring found on males. Female Umbies in breeding/brood-raising colors exhibit a startlingly bright whitish-yellow body color.