Georgette Douwma / Shoal of Elongate surgeonfish (Acanthurus mata) Rinca, Indonesia

Georgette Douwma / Elongate surgeonfish (Acanthurus mata) at a cleaning station with Bluestreak cleaner wrasses and sweepers in the background. Andaman Sea, Thailand

Fred Bavendam / Elongate Surgeonfish (Acanthurus mata) being cleaned by Blue-streaked Cleaner Wrasse (Labroides dimidiatus), Bali, Indonesia

Fred Bavendam / Elongate Surgeonfish (Acanthurus mata) schooling at ship wrek, Bali, Indonesia

GEORGETTE DOUWMA / Shoal of Elongate surgeonfish (Acanthurus mata). Komodo, Indonesia

GEORGETTE DOUWMA / Elongate surgeonfish (Acanthurus mata) being cleaned by a pair of Cleaner wrasse (Lutjanus dimidiatus). Bali, Indonesia

GEORGETTE DOUWMA / Two Elongate surgeonfish (Acanthurus mata) with Bluestreak cleaner wrasses, showing the colour changes the fish can go through during cleaning. Sweepers in background. Andaman Sea, Thailand.

GEORGETTE DOUWMA / Elongate surgeonfish (Acanthurus mata) at cleaning station with a Bluestreak cleaner wrasse (Labroides dimidiatus). Andaman Sea, Thailand

Fred Bavendam / Elongate Surgeonfish (Acanthurus mata) pair, underwater, Bali, Indonesia