White; upper body may have shadings ranging from blue to olive or red. Fins, other than tail, may be white or yellowish.
Rapidly and dramatically change color from white to blotched and mottled red to reddish brown when becoming inactive. Light bluish lines often on head and, occasionally, upper body.
Adept at color change. Most common phase is brown to reddish brown; can be blue-gray, bright yellow or many shades between. Have pale lines, scattered small black spots, and a black streak on upper jaw.