Franco Banfi,Franco Banfi / Ocean Sunfish (Mola Mola) with Longfinned bannerfish (Heniochus acuminatus) Crystal Bay, Nusa Penida, Bali Island, Indonesia, Pacific Ocean

Franco Banfi / Shoal of Longfin bannerfish (Heniochus acuminatus) Maldives, Indian Ocean

Franco Banfi / Shoal of Longfin bannerfish (Heniochus acuminatus) Maldives, Indian Ocean

Juergen Freund / Longfin Bannerfish (Heniochus acuminatus) head on portrait, Bali, Indonesia, Indo-pacific

Fred Bavendam / Longfin Bannerfish (Heniochus acuminatus) pair, Bali, Indonesia

Doug Perrine / Shoal of Longfin bannerfish {Heniochus acuminatus} Rangiroa Atoll, Tuamotu Islands, French Polynesia, South Pacific Ocean (Non-ex).

Pascal Kobeh / Cup coral (Turbinaria mesenterina) housing Blackblotch or blackspot squirrelfish (Sargocentron melanospilos) and a longfin bannerfish (Heniochus acuminatus), New Caledonia, Pacific Ocean.

Pascal Kobeh / Longfin bannerfish (Heniochus acuminatus), three in front of Giant seafan / gorgonian (Annella mollis). Indian Ocean, Madagascar.

Pascal Kobeh / Longfin bannerfish (Heniochus acuminatus) shoal in front of Giant seafan / gorgonian (Annella mollis). Indian Ocean, Madagascar.

Gary Bell/ Oceanwide / Longfin Bannerfish (Heniochus acuminatus) and sea fan, Great Barrier Reef, Australia

David Fleetham / Ocean Sunfish (Mola mola) being cleaned by an angelfish and longfin bannerfish as divers look on. Crystal Bay, Nusa Penida, Bali Island, Indonesia, Pacific Ocean.

David Fleetham / Ocean Sunfish (Mola mola) being cleaned by an angelfish, butterflyfish and longfin bannerfish. Crystal Bay, Nusa Penida, Bali Island, Indonesia, Pacific Ocean.

Jordi Chias / Pennant coralfish (Heniochus acuminatus) Tofo, Mozambique, Indian Ocean.

Jordi Chias / Pennant coralfish (Heniochus acuminatus) cleaning Smalleye stingray (Dasyatis microps) Tofo, Mozambique, Indian ocean.

Tony Wu / Longfin bannerfish (Heniochus acuminatus) patrolling coral reef, Ashmore Reef, Australia

Pascal Kobeh / Two Longfin / Reef bannerfish (Heniochus acuminatus) and two Masked bannerfish (Heniochus monoceros) in front of Giant seafans / gorgonians (Subergorgia mollis) on a coral reef, Madagascar. Indian Oc...

Pascal Kobeh / Two Longfin / Reef bannerfish (Heniochus acuminatus) and two Masked bannerfish (Heniochus monoceros) in front of Giant seafans / gorgonians (Subergorgia mollis) on a coral reef, Madagascar. Indian Oc...

Franco Banfi / Ocean Sunfish (Mola mola) with Longfin bannerfish (Heniochus acuminatus) cleaning the skin, Crystal Bay, Nusa Penida, Bali Island, Indonesia, Pacific Ocean

Franco Banfi / Ocean Sunfish (Mola Mola) swimming through a shoal of different fish including Longfin Bannerfish (Heniochus acuminatus) Crystal Bay, Nusa Penida, Bali Island, Indonesia, Pacific Ocean

Franco Banfi / Ocean Sunfish (Mola Mola) with Longfin bannerfish (Heniochus acuminatus) Crystal Bay, Nusa Penida, Bali Island, Indonesia, Pacific Ocean

Franco Banfi / Shoal of Longfin bannerfish (Heniochus acuminatus) Maldives, Indian Ocean

Franco Banfi / Shoal of Longfin bannerfish (Heniochus acuminatus) Maldives, Indian Ocean

Franco Banfi / Longfin bannerfish (Heniochus acuminatus) with a malformation of the banner, Maldives, Indian Ocean

Franco Banfi / Longfin bannerfish (Heniochus acuminatus) Maldives, Indian Ocean

Brent Hedges / Longfin bannerfish (Heniochus acuminatus) on coral reef, Walindi, Papua New Guinea

Brent Hedges / Two Longfin bannerfish (Heniochus acuminatus) portraits, Walindi, Papua New Guinea

Juergen Freund / Portrait of Longfin bannerfish (Heniochus acuminatus) Bali, Indonesia, Indo-pacific.

GEORGETTE DOUWMA / Longfin bannerfish (Heniochus acuminatus) Andaman Sea, Thailand

GEORGETTE DOUWMA / Longfin bannerfish (Heniochus acuminatus) with soft corals on reef. Andaman Sea, Thailand

GEORGETTE DOUWMA / Longfin bannerfish (Heniochus acuminatus). Bali, Indonesia.

Jane Burton / Longfin bannerfish / Wimplefish / Pennant coralfish {Heniochus acuminatus} captive, from Indo-Pacific

GEORGETTE DOUWMA / Two longfin bannerfish (Heniochus acuminatus), Andaman Sea, Thailand

GEORGETTE DOUWMA / Longfin bannerfish (Heniochus acuminatus) pair, Indonesia

GEORGETTE DOUWMA / Longfin bannerfish (Heniochus acuminatus). Indonesia.

Norbert Wu / Common Squirrelfish (Holocentrus adscensionis) Pennant Bannerfish (Heniochus chrysostomus) and Emperor Angelfish (Pomacanthus imperator) near soft coral ledge, Raja Ampat Islands, Indonesia

Fred Bavendam / Longfin Bannerfish (Heniochus Acuminatus) pair swimming together, Bali, Indonesia

Chris Newbert / Pennant Bannerfish (Heniochus chrysostomus) purple Soft Coral (Plexauridae) and Leather Coral (Sarcophyton sp), Solomon Islands

Norbert Wu / Masked Butterflyfish (Chaetodon semilarvatus) school and Butterflyfish (Heniochus diphreutes), Red Sea, Egypt

Fred Bavendam / Longfin Bannerfish (Heniochus acuminatus) swimming along reef, Bali, Indonesia

Fred Bavendam / Bannerfish (Heniochus diphreutes) school along reef, Manado, North Sulawesi, Indonesia

Fred Bavendam / Bannerfish (Heniochus diphreutes) school, 45 meters deep on a reef wall swimming past a large Sponge and Crinoids, Manado, North Sulawesi, Indonesia

Doug Perrine / Shoal of Longfin bannerfish {Heniochus acuminatus} Rangiroa Atoll, Tuamotu Islands, French Polynesia, South Pacific Ocean (Non-ex).

Tim Fitzharris / Longfin Bannerfish (Heniochus acuminatus) school, Pescador Island, Philippines

Gary Bell/ Oceanwide / Longfin Bannerfish (Heniochus acuminatus) pair, Great Barrier Reef, Australia

Pete Oxford / Bannerfish (Heniochus diphreutes) school, Banda Sea, Indonesia

Birgitte Wilms / Sponge (Xestospongia sp) and Bannerfish (Heniochus diphreutes) pair, Solomon Islands

David Hall / Longfin bannerfish (Heniochus acuminatus) schooling above coral reef, Indonesia

Sergio Hanquet / Pennant coralfish (Heniochus acuminatus) shoal, Maldives, Indian Ocean.

David Fleetham / Two Longfin bannerfish (Heniochus acuminatus) cleaning an Ocean sunfish (Mola mola), Crystal Bay, Nusa Penida, Indonesia, Pacific Ocean.

David Fleetham / Ocean sunfish (Mola mola) with missing eye, being cleaned by Longfin bannerfish (Heniochus acuminatus), Crystal Bay, Nusa Penida, Bali Island, Indonesia, Pacific Ocean.

Magnus Lundgren / School of Yellow-ribbon sweetlips (Plectorhinchus polytaenia) and a Longfin bannerfish (Heniochus acuminatus) swimming with the current, Dampier strait, Raja Ampat, Indonesia, Pacific Ocean.

Tui De Roy / Pennant coralfish (Heniochus acuminatus) with Giant barrel coral (Xestospongia muta) Tulamben, Bali, Indonesia. Lesser Sunda Islands.

Tui De Roy / Pennant coralfish (Heniochus acuminatus) at Giant barrel sponge (Xestospongia muta) Bali tropical reef community, Tulamben, North coast, Bali, Indonesia. Lesser Sunda Islands.

Tui De Roy / Pennant coralfish (Heniochus acuminatus) at Giant barrel sponge (Xestospongia muta) Bali tropical reef community, Tulamben, North coast, Bali, Indonesia. Lesser Sunda Islands.

Tui De Roy / Pennant coralfish (Heniochus acuminatus), with schooling baitfish. Christmas Rock, Noonu Atoll, Maldives.

Tui De Roy / Pennant coralfish (Heniochus acuminatus), over mostly dead or dying coral reef following several bleaching events, Vadhoo Thila, Raa Atoll, Maldives.

Tui De Roy / Pennant coralfish (Heniochus acuminatus), shoal, Maldives

Tui De Roy / Pennant coralfish (Heniochus acuminatus), shoal, Maldives

Willem Kolvoort / Longfin bannerfish (Heniochus acuminatus) in Passe Dubois / Dubois channel, Aldabra, Indian Ocean

Willem Kolvoort / Longfin bannerfish (Heniochus acuminatus) in Passe Dubois / Dubois channel, Aldabra, Indian Ocean

Willem Kolvoort / Longfin bannerfish (Heniochus acuminatus) swimming above reef in Passe Dubois / Dubois channel, Aldabra, Indian Ocean