Georgette Douwma / Dead surgeonfish being 'cleaned' by a Bleusreak cleaner wrasse (Labroides dimidiatus). Many fish observed dead or dying on reefs in the Maldives, April 2012. Another episode of dying fish was in 2007....

Juergen Freund / Yellowtail fusilier (Caesio cuning) being cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus) Papua New Guinea.

Georgette Douwma / Lyretail anthias or Goldie (Pseudanthias squamipinnes) male being cleaned by a Cleaner wrasse (Labroides dimidiates). Rinca, Indonesia

Georgette Douwma / Red soldierfish (Myripristis murdjan) being cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus), Andaman Sea, Thailand

Georgette Douwma / Rivulated rabbitfish (Siganus rivulatus) being cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus) Andaman Sea, Thailand

Jeff Rotman / A Moray Eel (Gymnothorax javanicus) being cleaned by a Bluestriped Cleaner Wrasse (Labroides dimidiatus) in symbiotic relationship. The Red Sea, Egypt.

Georgette Douwma / Soldierfish (Myripristis sp.) with Bluestreak cleaner wrasse (Labroides dimidiatus). Rinca, Komodo National Park, Indonesia.

Doug Perrine / Reef manta ray (Manta alfredi formerly Manta birostris) with cephalic fins rolled up, being cleaned by Moon wrasses (Thalassoma lunare) and Blue-streak cleaner wrasses (Labroides dimidiatus) Hanifaru...

Doug Perrine / Reef manta ray (Manta alfredi formerly Manta birostris) being cleaned by Moon wrasses (Thalassoma lunare) and Blue-streak cleaner wrasses (Labroides dimidiatus) at mouth of Hanifaru Bay, Hanifaru Lago...

Doug Perrine / Reef manta ray (Manta alfredi formerly Manta birostris) being cleaned by Moon wrasses (Thalassoma lunare) and Blue-streak cleaner wrasses (Labroides dimidiatus) Hanifaru Bay entrance, Hanifaru Lagoon,...

Doug Perrine / Reef manta ray (Manta alfredi formerly Manta birostris) being cleaned by Moon wrasses (Thalassoma lunare), initial phase Two-tone wrasses (Thalassoma amblycephalum) and Blue-streak cleaner wrasses (...

Doug Perrine / Reef manta ray (Manta alfredi formerly Manta birostris) being cleaned by Moon wrasses (Thalassoma lunare) with cleaner fish inside open mouth, Sunshine Thila, Lankan, North Male Atoll, Maldives, India...

Juergen Freund / Bluestreak cleaner wrasse (Labroides dimidiatus)cleaning a Scissortail fusilier (Caesio caerulaurea) New Ireland, Papua New Guinea.

Juergen Freund / Mimic surgeonfish (Acanthurus pyroferus) being cleaned by Cleaner wrasse (Labroides dimidiatus). Misool, Raja Ampat, West Papua, Indonesia

Georgette Douwma / Bluestreak Cleaner Wrasses (Labroides dimidiatus) cleaning a snapper. Komodo National Park, Indonesia, October.

Georgette Douwma / Bluestreak Cleaner Wrasses (Labroides dimidiatus) cleaning a snapper. Komodo National Park, Indonesia, October.

GEORGETTE DOUWMA / Six-banded angelfish (Pomacanthus sexstriatus) being cleaned by two Bluestreak cleaner wrasse(Labroides dimidiatus) Indonesia

Tim Laman / Bluestreak cleaner wrasse (Labroides dimidiatus) cleaning a Spotted Porcupinefish (Diodon hystrix) on a coral reef in Bali, Indonesia.

GEORGETTE DOUWMA / Twinstripe fusilier (Pterocaesio marri) with a Bluestreak cleaner wrasse (Labroides dimidiatus) cleaning inside its mouth. Misool, Raja Ampat, West Papua, Indonesia

GEORGETTE DOUWMA / Six-banded angelfish (Pomacanthus sexstriatus) being cleaned by two Bluestreak cleaner wrasses (Labroides dimidiatus) Indonesia.

GEORGETTE DOUWMA / Six-banded angelfish (Pomacanthus sexstriatus) being cleaned by two Bluestreak cleaner wrasses (Labroides dimidiatus). Indonesia

GEORGETTE DOUWMA / Six-banded angelfish (Pomacanthus sexstriatus) pair at cleaning station being cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus) Indonesia.

GEORGETTE DOUWMA / Six-banded angelfish (Pomacanthus sexstriatus) at a 'cleaning station' being cleaned by two Bluestreak cleaner wrasses (Labroides dimidiatus) with a second angelfish waiting its turn. Indonesia.

GEORGETTE DOUWMA / Six-banded angelfish (Pomacanthus sexstriatus) being cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus) Indonesia

Georgette Douwma / Humphead wrasse (Cheilinus undulatus) attended by two Cleaner wrasses (Labroides dimidiatus). Komodo, Indonesia. Indo-Pacific.

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

GEORGETTE DOUWMA / Yellow Boxfish / Cube trunkfish (Ostracion cubicus) feeding on coral while being cleaned by Bluelined cleaner wrasse (Labroides dimidiatus) Egypt, Red Sea.

GEORGETTE DOUWMA / Yellow boxfish / Cube trunkfish (Ostracion cubicus) being cleaned by Bluelined cleaner wrasse (Labroides dimidiatus) Egypt, Red Sea.

Fred Bavendam / Tomato Grouper (Cephalopholis sonnerati) getting cleaned by Blue-streaked Cleaner Wrasse (Labroides dimidiatus), Bali, Indonesia

Michele Westmorland / Blue and gold fusilier (Caesio teres) and Long-fin bannerfish (Heniochus acuminatus) being cleaned by Cleaner wrasse (Labroides dimidiatus) using barrel sponge as a cleaning station. Phil's Reef, Tufi...

Michele Westmorland / Fusilier (Caesio teres) being cleaned by a Cleaner wrasse (Labroides dimidiatus) using barrel sponge as a cleaning station. Phil's Reef, Tufi, Papua New Guinea

Georgette Douwma / Lyretail anthias (Pseudanthias squamipinnes) two males and one female with juvenile Cleaner wrasse (Labroides dimidiatus) on coral. Rinca, Indonesia.

GEORGETTE DOUWMA / Redtoothed triggerfish (Odonus niger) with Cleaner wrasses (Labroides dimidiatus). Bali, Indonesia.

GEORGETTE DOUWMA / Slingjaw wrasse (Epibulus insidiator) being cleaned by two Bluestreak cleaner wrasse (Labroides dimidiatus). Andaman Sea, Thailand

GEORGETTE DOUWMA / Giant sweetlips (Plectorhinchus albovitatus) with Cleaner wrasse (Labroides dimidiatus) Papua New Guinea

GEORGETTE DOUWMA / Oriental sweetlips (Plectorhinchus vittatus) with a Bluestreak cleaner wrasse (Labroides dimidiatus). Andaman Sea, Thailand

GEORGETTE DOUWMA / Map pufferfish (Arothron mappa) on reef with Cleaner wrasse (Labroides dimidiatus). Papua New Guinea

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

GEORGETTE DOUWMA / Bluestreak cleaner wrasse (Labroides dimidiatus) cleaning a diver's ear. Andaman Sea, Thailand

GEORGETTE DOUWMA / Bluestreak cleaner wrasse (Labroides dimidiatus) cleaning diver's ear. Andaman Sea, Thailand

Jane Burton / Cleaner wrasse {Labroides dimidiatus} cleaning Flame dwarf angelfish {Centropyge loriculus} captive

Jane Burton / Flame dwarf angelfish {Centropyge loriculus} in invitation display to Cleaner wrasse {Labroides dimidiatus} captive, from Hawaii

Jane Burton / Flame dwarf angelfish {Centropyge loriculus} in invitation display to Cleaner wrasse {Labroides dimidiatus} captive, from Hawaii

GEORGETTE DOUWMA / Redtoothed triggerfish (Odonus niger) with Cleaner wrasse (Labroides dimidiatus). Bali, Indonesia.

GEORGETTE DOUWMA / Singular bannerfish (Heniochus singularis), pair with Cleaner wrasse (Labroides dimidiatus). Bali, Indonesia

Georgette Douwma / Reticulated dascyllus (Dascyllus reticulatus) with Cleaner wrasse (Labroides dimidiatus), Rinca, Indonesia

GEORGETTE DOUWMA / Blacktongue unicornfish (Naso hexacanthus) being cleaned by juvenile Cleaner wrasse (Labroides dimidiatus) Red Sea, Egypt.

GEORGETTE DOUWMA / Bigeye emperor {Monotaxis grandoculis} being cleaned by Cleaner wrasse {Labroides dimidiatus}, Red Sea, Egypt

GEORGETTE DOUWMA / Spangled emperor {Lethrinus nebulosus} being cleaned by Cleaner wrasse {Labroides dimidiatus}, Red Sea, Egypt

Norbert Wu / Blue-streaked Cleaner Wrasse (Labroides dimidiatus) cleaning Guineafowl Pufferfish (Arothron meleagris), Raja Ampat Islands, Indonesia

Nature Production / Blue-Streak / Striped Cleaner Wrasse {Labroides dimidiatus} cleaning in the mouth of Oriental Sweetlips {Plectorhinchus orientalis} Maldives

Fred Bavendam / Unicornfish (Naso vlamingii) being cleaned by a Blue-streaked Cleaner Wrasse (Labroides dimidiatus), Bali, Indonesia

Juergen Freund / Potato grouper {Epinephelus tukula} with mouth being cleaned by Cleaner wrasse {Labroides dimidiatus} Great Barrier Reef & Coral Sea, Australia

Chris Newbert / Blue-streaked Cleaner Wrasse (Labroides dimidiatus) cleaning gills of Map Puffer (Arothron mappa) 80 feet deep, Solomon Islands

Fred Bavendam / Eyepatch Butterflyfish (Chaetodon adiergastos) lining up for the services of a Blue-streaked Cleaner Wrasse (Labroides dimidiatus), Bali, Indonesia

Fred Bavendam / Blue-streaked Cleaner Wrasse (Labroides dimidiatus) working on a Giant Moray Eel (Gymnothorax javanicus), Red Sea, Egypt

Doug Perrine / Oriental sweetlips {Plectorhinchus orientalis / vittatus} being cleaned by cleaner wrasses {Labroides dimidiatus} Maldives (Non-ex).

GEORGETTE DOUWMA / Cleaner wrasse {Labroides dimidiatus} cleaning Rosy goatfish {Parupeneus rugescens} Red Sea

Jeff Rotman / Lunar tailed grouper {Variola louti} + symbiotic Bluestreak cleaner fish {Labroides dimidiatus} Red Sea