Scientific name: 
Dascyllus trimaculatus
Distinctive features: 
Gray with black scale edges. Dark fins except rear dorsal. Juvenile: Black with large white spot on foreheads and another on middle upper back.
Size: 
to 14 cm ( 5.5 in.)

Gray. All of the fins on the three-spot dascyllus are dark except the back half of the dorsal fin which is clear. Depending upon geographic location, the three-spot dascyllus may exhibit some yellow or orange coloration. Juveniles are black with large white spot on foreheads and another on middle upper back.