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...

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...

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

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

Georgette Douwma / Yellow tropical reef fish composite image on black background, Falcula butterflyfish (Chaetodon falcula), Yellow boxfish (Ostracion cubicus), Golden butterflyfish (Chaetodon semilarvatus), Red Sea clo...