Koloa Landing, Kaua`i, 12 feet

Eggs, Sharks Cove tidepool, O'ahu

Juvenile, Makapu'u tidepool, O'ahu

Night, Makapu'u tidepool, O'ahu

Common on shallow reefs and tidepools exposed to surge.  A solitary territorial fish that darts rapidly between holes in the reef and feeds upon small invertebrates.  Pale gray with a greenish head fading to yellow toward the tail, bright silver iris crossed by a black vertical bar.  Attains 2.5 inches.  East Africa to Okinawa, Hawai'i and Pitcairn.