Jeff Rotman / Orangespine unicornfish (Naso lituratus) profile portrait, Red Sea, Egypt.
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Jeff Rotman / Detail of dorsal fin of Bluespine Unicornfish (Naso Unicornis) Red Sea, Egypt
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David Fleetham / Achilles tang (Acanthurus achilles) in coral reef. Kauai, Hawaii.
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David Fleetham / Marine iguana (Amblyrhynchus cristatus) feeding underwater on algae. Endemic species. With Schooling black striped salema (Xenocys jessiae)(endemic species) and yellowtail surgeonfish (Prionurus latic...
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Richard Robinson / Grey Unicornfish (Naso caesius) and Sleek Unicorn fish (Naso hexacanthus ) school at Banc Lorne, New Caledonia.
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Georgette Douwma / RF- Elongate surgeonfish (Acanthurus mata) being cleaned by Black spot cleaner wrasse (Labroides pectoralis) and Bluestreak cleaner wrasse (Labroides dimidiatus). Indonesia. (This image may be licen...
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Alex Mustard / Bignose unicornfish (Naso vlamingii) profile of male displaying (the blue stripe at the bottom of the frame is the tail of another individual) Baa Atoll, Maldives. Indian Ocean.
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Pascal Kobeh / School of Yellowback fusiliers (Caesio xanthonota) and Bluekeel unicornfish (Naso hexacanthus) Madagascar. Indian Ocean.
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Michele Westmorland / Black Striped Salema (Xenocys jessiae) and school of Yellow tail surgeonfish (Prionurus laticlavius) Galapagos Islands..
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Joel Sartore / Photo Ark / Bignose unicornfish (Naso vlamingii) portrait, Aquarium of Boise. Captive, occurs in Indo-Pacific.
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Joel Sartore / Photo Ark / Bignose unicornfish (Naso vlamingii) head portrait, Aquarium of Boise. Captive, occurs in Indo-Pacific.
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Joel Sartore / Photo Ark / Yellowtail tang (Zebrasoma xanthurum) portrait, Sharjah Aquarium, UAE. Captive, occurs in north western Indian Ocean.