Hanauma Bay, Oahu, 30 feet

Fish Hole, Midway Atoll, 30 feet

Juvenile, Pupukea, Oahu, 30 feet

Juvenile, Haleiwa, Oahu, 30 feet

Kahe Point, Oahu, Hawaii, 35 feet

Main Channel, Midway Atoll, 30 feet

Night coloration, Puako, Hawaii, 40 feet

Koko Craters, Oahu, 25 feet

Kewalo, Oahu, 15 feet

Kewalo, Oahu, 50 feet

Kewalo, Oahu, 50 feet

Sea Tiger Wreck, Oahu, 85 feet

100-foot Hole, Waikiki, Oahu, 75 feet

Juvenile, Kewalo Pipe, Oahu, 50 feet

Mokuleia, Oahu, 100 feet

Reef's End, Molokini, 60 feet

Night, Mahi wreck, Oahu, 85 feet

Common in groups feeding on zooplankton near rocky outcrops or Antler Coral where they hide when threatened.  Body and fins black, juveniles with tall fins and two white marks, saddle above the head soon fading, the central blotch spreading with age.  Sleeping fish are dark gray with a white spot below the dorsal fin.  Related to Dascyllus trimaculatus of the Indo-Pacific.  Attains 5 inches.  Endemic to Hawai‘i.