Moku o Lo'e, Kane'ohe Bay, Oahu

Cargo Pier, Midway Atoll, 20 feet

Rarely seen as it hides within tiny crevices at any depth.  Reddish-brown to greenish gray with fine blue vertical lines on the head.  Attains 1 inch.  Marshall Islands to Hawaii, Tonga, French Polynesia, and Pitcairn.  Formerly known as Zonogobius farcimen.