Juergen Freund / Shoal of Blue chromis (Chromis viridis) amongst hard coral with Cloudy Damselfish (Dascyllus carneus) Sipadan, Malaysia.

Georgette Douwma / Reticulated dascyllus or damselfish (Dascyllus reticulatus). West Papua, Indonesia. Indo-West Pacific.

Richard Robinson / Yellowtail dascyllus (Dascyllus flavicaudus) in coral, at South Minerva Reef also known as Teleki Tonga a disputed territory in the South Pacific between Tonga and Fiji.

David Fleetham / Three spot damselfish (Dascyllus trimaculatus) with Sea anemone home, Yap, Micronesia.

David Fleetham / Hawaiian dascyllus (Dascyllus albisella), Hawaii.

Linda Pitkin / Magnificent sea anemones (Heteractis magnifica) with Three-spot dascyllus / Dominos (Dascyllus trimaculatus), and Two-banded anemonefish (Amphiprion bicinctus) Anemone City, Ras Mohammed National Park...

Constantinos Petrinos / Domino damsel (Dascyllus trimaculatus) by its host sea anemone (Heteractis magnifica). Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Three-spot damsel (Dascyllus trimaculatus) trying an empty bivalve for nesting site. Egypt, Red Sea.

Georgette Douwma / Three-spot damsel (Dascyllus trimaculatus) guarding eggs. Egypt, Red Sea.

Pete Oxford / Reticulated dascyllus (Dascyllus reticulatus) Rainbow Reef, Fiji, South Pacific.

Pascal Kobeh / Masked porcupinefish (Diodon liturosus) and a Threespot dascyllus / damselfish (Dascyllus trimaculatus), Daymaniyat islands, Oman. Gulf of Oman.

Alex Mustard / Portrait of Domino damselfish (Dascyllus trimaculatus) over coral head (Acropora lamarkii) Ras Katy, Sinai, Egypt. Gulf of Aqaba, Red Sea.

Alex Mustard / Portrait of Domino damselfish (Dascyllus trimaculatus) against open water. Egypt. Red Sea.

Alex Mustard / Spawning pair of Domino damselfish (Dascyllus trimaculatus) The female is in front, the male is behind and his head has gone almost white during the spawning. He will guard the eggs until they hatch....

Alex Mustard / Spawning pair of Domino damselfish (Dascyllus trimaculatus) The female is in the foreground, her ovipositor clearly visible. The male is behind with head almost white during the spawning. He will guar...

Fred Bavendam / Oriental Sweetlips (Plectorhinchus orientalis) hiding under coral below Reticulated Dascyllus (Dascyllus reticulatus) school, Bali, Indonesia

Claudio Contreras / Three-spot Dascyllus Fish (Dascyllus trimaculatus), swimming near sea anemone. Pandanon Island, Danajon Bank, Central Visayas, Philippines, April

Claudio Contreras / Three-spot Dascyllus Fish (Dascyllus trimaculatus), Pandanon Island, Danajon Bank, Central Visayas, Philippines, April

Claudio Contreras / Humbug Dascyllus (Dascyllus aruanus) blurred motion shot, amongst corals. Bilang Bilangang East Island, Danajon Bank, Central Visayas, Philippines, April

Franco Banfi / Magnificent Sea anemone (Heteractis magnifica) with Three-spot dascyllus (Dascyllus trimaculatus) Maldives, Indian Ocean

Floris van Breugel / Humbug dascyllus (Dascyllus aruanus) guarding his patch of staghorn coral in a shallow lagoon on Ofu, American Samoa. January. The window of sky above is a result of the phenomenon known as Snell's W...

Georgette Douwma / White Banded Cleaner Shrimp (Lysmata amboinensis) attending to a Three-spot Damselfish (Dascyllus trimaculatus), with Hingebeak Shrimps (Rhynchocinetes durbanenesis) in foreground. Rinca, Komodo Natio...

Georgette Douwma / White Banded Cleaner Shrimp (Lysmata amboinensis) attending to a Three-spot Damselfish (Dascyllus trimaculatus). Rinca, Komodo National Park, Indonesia, October.

Tim Laman / Three-spot damselfish (Dascyllus trimaculatus) amongst tentacles of a sea anemone, Bali, Indonesia.

Sue Daly / Black spiny sea urchins (Diadema sp) with Humbug dascyllus (Dascyllus aruanus) and shoal of Yellow-striped cardinalfish (Apogon cyanosoma) Cebu, Philippines

GEORGETTE DOUWMA / Black-tail dascyllus (Dascyllus melanurus) amongst Blue coral (Heliopora coerulea). Raja ampat, West Papua, Indonesia

GEORGETTE DOUWMA / Three spot damselfish / dascyllus (Dascyllus trimaculatus) sheltering in anemone, Indonesia

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

Georgette Douwma / Reticulated dascyllus (Dascyllus reticulatus) with crinoid, Bunaken NP, Sulawesi, Indonesia.

GEORGETTE DOUWMA / Red Sea dascyllus (Dascyllus marginatus) shoal hovering over branching coral in which they hide. Red Sea, Egypt.

GEORGETTE DOUWMA / Three spot damselfish spawning {Dascyllus trimaculatus} Andaman Sea, Thailand

Juergen Freund / Three spot damselfish {Dascyllus trimaculatus} sleeping amongst tentacles of Sea anemone, Phillipines

Birgitte Wilms / Magnificent Sea Anemone (Heteractis magnifica) swarmed by Damselfish (Dascyllus sp) with Orange-striped Triggerfish (Balistapus undulatus) in foreground

Birgitte Wilms / Orange-striped Triggerfish (Balistapus undulatus) and Damselfish (Dascyllus sp) in background, 50 feet deep, Red Sea, Egypt

Fred Bavendam / Reticulated Dasycllus (Dascyllus reticulatus) and several other kinds of small reef fish hover above a colony of Staghorn Coral, Bali, Indonesia

Fred Bavendam / Reticulated Dascyllus (Dascyllus reticulatus) and several kinds of Cardinalfish hover about a colony of Staghorn Coral, Indonesia

Francis Abbott / Red Galum sea anemone (Heteractis sp.) with various fishes, Sudan, Red Sea

David Fleetham / Antler coral (Pocillopora eydouxi), with endemic Hawaiian dascyllus (Dascyllus ablisella), surgeonfish and snapper, Hawaii.

David Fleetham / Antler coral (Pocillopora eydouxi) with Hawaiian dascyllus (Dascyllus ablisella), endemic, and diver behind, Hawaii.

David Fleetham / Three spot damselfish (Dascyllus trimaculatus) juvenile, swimming beside Mertens' carpet sea anemone (Stichodactyla mertensii) for protection, Yap, Micronesia, Pacific Ocean. Fish loses immunity...

David Fleetham / Clark's anemonefish (Amphiprion clarkii) living in Merten's' carpet sea anemone (Stichodactyla mertensii) with two Three spot damselfish (Dascyllus trimaculatus) juveniles, Yap, Microne...

Doug Perrine / Pennant butterflyfish / False moorish idol (Heniochus diphreutes) swimming over coral reef with Hawaiian dascyllus (Dascyllus ablisella) and juvenile Bluestripe snappers (Lutjanus kasmira), surrounded...

Alex Mustard / Domino damselfish (Dascyllus trimaculatus) head portrait, Sharm El Sheikh, Egypt, Red Sea.

Doug Perrine / Hawaiian dascyllus / Hawaiian threespot damsel (Dascyllus albisella) sheltering in and around the bleached branches of Antler coral (Pocillopora grandis), South Kona, Hawaii, Pacific Ocean.

Tony Wu / Profile of Two stripe damselfish (Dascyllus reticulatus). Pacific ocean, Papua New Guinea.

Sirachai Arunrugstichai / Healthy Staghorn corals (Acropora sp.) with various reef fishes, including Moon wrasses (Thalassoma lunare), and Threespot dascyllus (Dascyllus trimaculatus) and a large school of Bigeye snappers (Lut...

Alex Mustard / Pair of Reticulated dascyllus (Dascyllus retriculatus) spawning eggs on a coral reef. Dauin, Dauin Marine Protected Area, Dumaguete, Negros, Philippines. Bohol Sea, tropical west Pacific Ocean.

Alex Mustard / Humbug damselfish ( Dascyllus aruanus) swims above a bleached hard coral (Acorpora sp.) on a reef. Laamu Atoll, Maldives. Indian Ocean

Georgette Douwma / Reticulated damselfish (Dascyllus reticulatus). Derawen Islands, East Kalimantan, Indonesia.

Frederique Olivier / Clark's anemonefish (Amphiprion clarkii) and Three spot damselfish (Dascyllus trimaculatus) swimming around anemone (Stichodactyla), Nusatupe Lagoon, Solomon Islands.

Frederique Olivier / Humbug dascyllus (Dascyllus aruanus) swimming around a coral head (Acropora), with a Cleaner wrasse (Labroides) nearby, Nusatupe Lagoon, Solomon Islands.