Alex Mustard / Harlequin sweetlips (Plectorhinchus chaetodonoides) cleaned by a pair of bluestreak cleaner wrasse (Labroides dimidiatus). South Atoll, Tubbataha Atolls, Tubbataha Reefs Natural Park, Palawan, Philipp...

Georgette Douwma / Many spotted sweetlips (Plectorhinchus chaetodonoides). Celebes Sea, Indo Pacific

Pascal Kobeh / Harlequin sweetlips (Plectorhinchus chaetodonoides) and school of Yellow sweepers (Parapriacanthus ransonneti). On reef covered with Soft coral (Dendronephthya sp). Flores Sea, Indonesia.

David Fleetham / Many spotted sweetlips (Plectorhinchus chaetodonoides) on Tubbataha Reef, Philippines.

David Fleetham / Many spotted sweetlips (Plectorhinchus chaetodonoides) with yellow Pygmy sweepers (Parapriacanthus ransonneti) Komodo, Indonesia.

David Fleetham / Two adult bluestreak cleaner wrasse (Labroides dimidiatus) searching a clown sweetlips (Plectorhinchus chaetodonoides) for parasites, Indonesia.

Bert Willaert / Oriental sweetlips (Plectorhinchus vittatus) and Harlequin sweetlips (Plectorhinchus chaetodonoides), Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Franco Banfi / Many-spotted sweetlips (Plectorhinchus chaetodonoides) Tubbataha Reef Natural Park, UNESCO World Heritage Site, Sulu Sea, Cagayancillo, Palawan, Philippines

Franco Banfi / Shoal of Many-spotted sweetlips (Plectorhinchus chaetodonoides) on a cleaning station, Tubbataha Reef Natural Park, UNESCO World Heritage Site, Sulu Sea, Cagayancillo, Palawan, Philippines

Alex Mustard / Long exposure of a juvenile Harlequin sweetlips (Plectorhinchus chaetodonoides), which dance as a defence from predators. The dance may mimic the movements of poisonous flatworms or may simply confuse...

Alex Mustard / Harlequin sweetlips (Plectorhinchus chaetodonoides) with cleaning Bluestreak cleaner wrasse (Labroides dimidiatus) and Bicolour cleaner wrasse (Labroides bicolor) South Atoll, Tubbataha Atolls, Tubbat...

Juergen Freund / Many spotted sweetlips (Plectorhinchus chaetodonoides) and other fish under table coral on a healthy coral reef, Komodo NP, Indonesia, Indo-pacific.

Juergen Freund / Juvenile Harlequin / Many spotted sweetlips (Plectorhinchus chaetodonoides) swimming by undulating its body sideways imitating a flatworm. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Juvenile Harlequin / Many spotted sweetlips (Plectorhinchus chaetodonoides) swiming by undulating its body sideways, imitating a flatworm. Lembeh Strait, North Sulawesi, Indonesia.

Fred Bavendam / Spotted Sweetlips (Plectorhinchus chaetodonoides) juvenile, Lembeh Strait, Indonesia

Fred Bavendam / Spotted Sweetlips (Plectorhinchus chaetodonoides) juvenile, Lembeh Strait, Indonesia

Michele Westmorland / Many spotted sweetlips ( Plectorhinchus chaetodontoides) hiding in colorful coral reef, Paul's Reef, Tufi, Oro Province, Papua New Guinea

Michael Pitts / Many spotted / Harlequin sweetlips {Plectorhynchus chaetodonoides} Palau, Micronesia, Pacific

GEORGETTE DOUWMA / Many spotted sweetlips {Plectorhinchus chaetodonoides} Sipadan, Malaysia

GEORGETTE DOUWMA / Many spotted / Harlequin sweetlips {Plectorhinchus chaetodonoides} Indonesia

David Fleetham / Buestreak cleaner wrasse (Labroides dimidiatus) searching Clown sweetlips (Plectorhinchus chaetodonoides) for parasites, Fiji, Pacific Ocean.

Georgette Douwma / Harlequin sweetlips (Plectorhinchus chaetodonoides) composite image showing adult and juvenile form on black background. South East Asia, Indo-West Pacific Ocean.

David Fleetham / Harlequin / Clown / Many spotted sweetlips fish (Plectorhinchus chaetodonoides) swims in erratic pattern mimicking spanish dancer nudibranch to deter predators, Celebes sea, Mabul Island, Malaysia.

Frederique Olivier / Harlequin sweetlips (Plectorhinchus chaetodonoides) swimming above a coral reef, Uepi Island, Solomon Islands.

Frederique Olivier / Harlequin sweetlips (Plectorhinchus chaetodonoides) swimming above a coral reef, Uepi Island, Solomon Islands.