David Fleetham / Orangeband surgeonfish (Acanthurus olivaceus) visiting cleaning station of Hawaiian cleaner wrasse (Labroides phthirophagus).They change colour to expose parasites, some turning black and others turni...

Doug Perrine / Belted wrasse (Stethojulis balteata) initial phase, on reef, Pawai Bay, Hawaii, Pacific Ocean.

Doug Perrine / Male Belted wrasse (Stethojulis balteata), terminal phase, portrait, Kohanaiki, Hawaii, Pacific Ocean.

Doug Perrine / Male Belted wrasse (Stethojulis balteata), terminal phase, portrait, Kohanaiki, Hawaii, Pacific Ocean.

Doug Perrine / Male Belted wrasse (Stethojulis balteata), terminal phase, portrait, Pawai Bay, Hawaii, Pacific Ocean.