Alex Mustard / Bengal snapper (Lutjanus bengalensis), Bannerfish (Heniochus diphreutes) and Fusiliers (Caesio sp.) diving towards coral reef to avoid predators. North Ari Atoll, Maldives. Indian Ocean.

Jurgen Freund / Blue and yellow fusiliers (Caesio teres) shoal, Great Barrier Reef, Queensland, Australia.

Georgette Douwma / Striated fusilier (Caesio striatus) school feeding on fish spawn at dusk. Egypt, Red Sea.

Jeff Rotman / Bluefin Trevally (Caranx melampygus) hunting Caesio Bluefish / Lunar Fusilier (Caesio lunaris). The Red Sea, Egypt.

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

Juergen Freund / Schooling Yellowtail fusilier (Caesio cuning) Misool, Raja Ampat, West Papua, Indonesia

Juergen Freund / A large shoal of Lunar fusiliers (Caesio lunaris) blending in with the same blue of the water. Misool, Raja Ampat, West Papua, Indonesia

Juergen Freund / School of Blue and gold fusiliers {Caesio teres} Indo Pacific

Fred Bavendam / Fusilier (Caesio sp) school streaming over a vast field of Disc Coral (Turbinaria reniformis), Manado, Sulawesi, Indonesia

Juergen Freund / Schooling blue and gold fusilers {Caesio teres}, Indo Pacific

Juergen Freund / Schooling blue and gold fusilers {Caesio teres}, Indo-Pacific

Georgette Douwma / Kaleidoscopic image of coral reef with soft corals (Dendropnethya) shoal of Yellow back fusilliers (Caesio teres) West Papua, Indonesia.

Linda Pitkin / Blue and gold fusiliers (Caesio teres) schooling alongside coral reef, Triton Bay, near Kaimana, West Papua, Indonesia

Linda Pitkin / Blue and gold fusiliers (Caesio teres) schooling, Triton Bay, near Kaimana, West Papua, Indonesia

Linda Pitkin / Blue and gold fusiliers (Caesio teres) schooling, Triton Bay, near Kaimana, West Papua, Indonesia

Linda Pitkin / Blue and gold fusiliers (Caesio teres) in thermocline, schooling over coral reef, Triton Bay, near Kaimana, West Papua, Indonesia

Richard Robinson / Three-stripe fusilier (Pterocaesio trilineata) shoal, Oneata, Lau Island Group, Fiji.

Jordi Chias / Orange-spotted emperor (Lethrinus erythracanthus) with shoal of Dark banded fusilier (Pterocaesio tile) South Male Atoll, Maldives islands, Indian Ocean.

Jordi Chias / Dark banded fusilier (Pterocaesio tile) Pomene Coast, Mozambique.

Juergen Freund / Tourists helmet diving and walking around the shallow reefs of Green Island, surrounded by Deep bodied fusilier (Caesio cuning) Great Barrier Reef, Queensland, Australia October 2016.

Juergen Freund / Tourists helmet diving and walking around the shallow reefs of Green Island, surrounded by Deep bodied fusilier (Caesio cuning) Great Barrier Reef, Queensland, Australia October 2016.

Juergen Freund / Tourists helmet diving and walking around the shallow reefs of Green Island, surrounded by Deep bodied fusilier (Caesio cuning) Great Barrier Reef, Queensland, Australia October 2016.

Juergen Freund / Tourists helmet diving and walking around the shallow reefs of Green Island, surrounded by Deep bodied fusilier (Caesio cuning) Great Barrier Reef, Queensland, Australia October 2016.

Alex Mustard / Bluestreak cleaner wrasse (Labroides dimidiatus) sticking its head into the mouth of a Red Sea fusilier (Caesio lunaris) during a cleaning session. Small Crack, Sha'ab Mahmud, Sinai, Egypt. Red Se...

Georgette Douwma / Goldband fusilier (Pterocaesio chrysozona), Red Sea, Egypt. January.

Nature Production / Yellow and Blueback Fusilier (Caesio teres), Chichijima, Ogasawara Islands UNESCO World Heritage Site, Japan

Georgette Douwma / Redbelly yellowtail fusilier / Deep bodied fusilier (Caesio cuning) swimming through Black coral (Antipathes dichotoma), West Papua, Indonesia.

Georgette Douwma / Yellow and blueback fusilier (Caesio teres) schooling over coral reef, West Papua, Indonesia.

Georgette Douwma / Yellow and blueback fusilier (Caesio teres) school swimming in coral reef with Soft corals (Dendronephthya sp), West Papua, Indonesia.

Georgette Douwma / Blue and gold fusilier / Scissor tailed fusilier (Caesio caerulaurea) school swimming through shafts of sunlight, West Papua, Indonesia.

Alex Mustard / Fusiliers including, Neon fusilier (Pterocaesio tile) and Randall's fusilier (Pterocaesio randalli) race past a coral reef in open water. East Of Eden, Similan Islands, Thailand. Andaman Sea, Indian...

Alex Mustard / Blue and yellow fusilier (Caesio teres) and Neon fusilier (Pterocaesio tile) over a coral reef. Sardine Reef, Raja Ampat, West Papua, Indonesia. Dampier Strait, tropical West Pacific Ocean.

Bertie Gregory / Lyretail Anthias (Pseudanthias squamipinnis) and Fusiliers (Caesio) on a coral reef, northern Red Sea.

Alex Mustard / Longfin batfish (Platax teira) with Fusiliers (Caesio spp.) in the current in front of Baby Rock pinnacle. Misool, Raja Ampat, West Papua, Indonesia. Ceram Sea.

Georgette Douwma / Yellow and blueback fusilier (Caesio teres) shoal, Similan Islands, Andaman Sea, Thailand.

Juergen Freund / Blue and yellow fusiliers (Caesio teres) shoal eating either eggs or colonial tunicate, Great Barrier Reef, Queensland, Australia.

Juergen Freund / Blue and yellow fusiliers (Caesio teres) shoal, Great Barrier Reef, Queensland, Australia.

Pascal Kobeh / Oman anemonefish / clownfish (Amphiprion omanensis) in a Leathery sea anemone (Heteractis crispa) near a hard coral (Porites) with Variable-lined fusiliers (Caesio varilineata) and a diver in the back...

Pascal Kobeh / School of Yellowback fusiliers (Caesio xanthonota) Madagascar. Indian Ocean.

Pascal Kobeh / School of Yellowback fusiliers (Caesio xanthonota) and Bluekeel unicornfish (Naso hexacanthus) Madagascar. Indian Ocean.

Pascal Kobeh / Coral reef with hard corals (Acropora ) and Gold-striped fusiliers (Caesio caerulaurea) Mayotte. Indian Ocean.

Alex Mustard / Pair of spawning Scalefin anthias (Pseudanthias squamipinnis), the female is in front and the male is behind, yawning. Behind are school of fusiliers (Caesio sp.) gathered to feed on the eggs. The Al...

Solvin Zankl / Humpback / Northern / Scarlet cleaner shrimp (Lysmata amboinensis) cleaning the mouth of a Banana fusilier (Pterocaesio pisang) Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Solvin Zankl / Yellow and blueback fusilier (Caesio teres) shoal, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Fred Bavendam / Elongate Surgeonfish (Acanthurus mata) being cleaned by Blackspot Cleaner Wrasse (Labroides pectoralis) near Yellow and Blueback Fusilier (Caesio teres) school, Bali, Indonesia

Michele Westmorland / Fusilier (Caesio tile) profile portrait, Palau, Micronesia

Michele Westmorland / Fusilier (Caesio tile) profile portrait, Palau, Micronesia

Georgette Douwma / Deep-bodied fusilier (Caesio cuning) school over coral reef. Indonesia.

Georgette Douwma / Yellowtop fusiliers (Caesio xanthonota) school over coral reef, Maldives, Indian Ocean

Jeff Rotman / Caesio Bluefish / Lunar Fusiler (Caesio lunaris) schooling at sunrise. The Red Sea, Egypt.

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

Juergen Freund / Schooling Yellowtail fusiliers (Caesio cuning) at a manta cleaning station. North Raja Ampat, West Papua, Indonesia.

Juergen Freund / Schooling Yellowtail fusiliers (Caesio cuning) at manta cleaning station. North Raja Ampat, West Papua, Indonesia.

Juergen Freund / Schooling Yellowtail fusiliers (Caesio cuning) at a manta cleaning station. North Raja Ampat, West Papua, Indonesia.

Juergen Freund / A blue wall of Lunar fusiliers (Caesio lunaris) and Bluestreak fusiliers (Pterocaesio tile) blending in with the blue of the water. Misool, Raja Ampat, West Papua, Indonesia

Fred Bavendam / Yellow and Blueback Fusilier (Caesio teres) school, Coral Sea, Australia

Michele Westmorland / Motion shot of Blue and gold fusilier (Caesio teres) Mulloway's Reef, Tufi, Papua New Guinea

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

Michele Westmorland / Motion shot of Blue and gold fusilier (Caesio teres) Phil's Reef, Tufi, Papua New Guinea

Jeff Rotman / Suez Fusilier (Caesio suevicus) schooling at morning changeover, Red Sea.

GEORGETTE DOUWMA / Yellowtop fusiliers (Caesio xanthonota) schooling. Andaman Sea, Thailand.

Nature Production / School of Blue and gold Fusiliers {Caesio teres}

Fred Bavendam / Fusilier (Caesio sp) streaming past a rock with orange and yellow crinoids, pink soft coral, Komodo National Park, Indonesia

Fred Bavendam / Yellow-tailed Fusiliers (Caesio cuning) swimming past a large sponge with several crinoids perching on it, Manado, North Sulawesi, Indonesia

Chris Newbert / Reef scenic with Sea Fans (Melithaea sp) and Fusiliers (Caesio sp) 70 feet deep, Solomon Islands

Chris Newbert / Soft Coral (Dendronephthya sp) and Fusilier (Caesio sp) school, 110 feet deep, Solomon Islands

Chris Newbert / Giant Barrel Sponge (Xestospongia testudinaria) and schooling Fusiliers (Caesio sp) 70 feet deep, Papua New Guinea

Fred Bavendam / Fusilier (Caesio sp) school stream by an Elephants Ear Sponge (Ianthella basta) laden with Crinoids, Kimbe Bay, WNBI, Papua New Guinea

Steven David Miller / Blue and gold fusilier school (Caesio teres) Great Barrier Reef, Heron Is, Australia.

GEORGETTE DOUWMA / Blue and gold fusilier (Caesio teres) school Grt Barrier Reef, Australia

Juergen Freund / Schooling Blue and gold fusilers {Caesio teres} Indo Pacific

Juergen Freund / Blue and gold fusiliers schooling {Caesio teres} Sulu-sulawesi seas, Indo-pacific

Jeff Rotman / Lunar fusilier fish schooling {Caesio lunaris} Red Sea

Nature Production / Blue and gold Fusiliers {Caesio teres} gathering around coral, Ogasawara Islands, Tokyo, Japan

David Fleetham / Scissortail fusilier (Caesio caerulaurea) swimming in shoal over reef, Yap, Federated States of Micronesia, Pacific Ocean.

Alex Mustard / School of Bluestreak fusiliers (Pterocaesio tile) swimming over a coral reef, Ari Atoll, Maldives, Indian Ocean.

Alex Mustard / Schooling Bannerfish (Heniochus diphreutes) and Yellowback fusiliers (Caesio xanthonota) diving down close to the coral reef as predators approach, North Ari Atoll, Maldives. Indian Ocean.

Sirachai Arunrugstichai / Blacktip reef shark (Carcharhinus melanopterus) circling over a half-eaten Yellowback fusilier (Caesio xanthonota) carcass, that was attacked by a Barracuda (Sphyraena sp.) on a shallow reef at night,...

Sirachai Arunrugstichai / Whale shark (Rhincodon typus), an endangered species, swimming through a school of Goldband fusiliier (Pterocaesio chrysozona) whilst feeding on zooplankton in nutrient-rich murky water, Adang-Rawi Ar...

Nick Hawkins / School of yellowtail fusiliers (Caesio cuning) on reef in Raja Ampat, West Papua, Indonesia. Pacific Ocean.

Willem Kolvoort / Yellow-tail fusiliers (Caesio teres) at the coral reef of Cosmoledo Island, Seychelles, Indian Ocean

Frederique Olivier / Mixed shoal of Gold banded sea perch (Lutjanus carponotatus) and Goldband fusiliers (Pterocaesio chrysozona), Uepi Island, Solomon Islands.

Frederique Olivier / School of Goldband fusiliers (Pterocaesio chrysozona), Uepi Island, Solomon Islands.

Frederique Olivier / Mixed shoal of Silver moony fish (Monodactylus argenteus) and Goldband fusiliers (Pterocaesio chrysozona), parts to reveal a Grey reef shark (Carcharhinus amblyrhynchos), Uepi Island, Solomon Islands.