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              Jewelled Wrasse (Halichoeres lapillus) 
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              Jewelled Wrasse, Male (Halichoeres lapillus) 
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              Johnsoni Fairy Wrasse (Cirrhilabrus johnsoni) 
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              Johnsoni Fairy Wrasse, Male (Cirrhilabrus johnsoni) 
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              Johnston Island Damselfish (Plectroglyphidodon johnstonianus) 
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              Johnston Island Damselfish (Plectroglyphidodon johnstonianus) 
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              Jordan's Tuskfish (Choerodon jordani) 
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              Katherine's Fairy Wrasse (Cirrhilabrus katherinae) 
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              Katherine's Fairy Wrasse, Male (Cirrhilabrus katherinae) 
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              Keyhole Angelfish (Centropyge tibicen) 
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              Klunzinger's Wrasse (Thalassoma rueppellii) 
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              Koran Angelfish, Juvenile (Pomacanthus semicirculatus) 
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              Koran Angelfish, Sub-Adult (Pomacanthus semicirculatus) 
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              Kuiter's Leopard Wrasse (Macropharyngodon kuiteri) 
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              Lattice Soldierfish (Myripristis violacea) 
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              Latticed Butterflyfish (Chaetodon rafflesi) 
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              Lavender Tang (Ctenochaetus binotatus) 
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              Lavender Tang (Acanthurus nigrofuscus) 
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              Lavender Tang (Acanthurus nigrofuscus) 
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              Leaf Goblinfish (Rhinopias eschmeyeri) 
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              Lemon Peel Mimic Tang (Acanthurus pyroferus) 
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              Lemon Tang (Acanthurus pyroferus) 
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              Lemonpeel Angelfish (Centropyge flavissima) 
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              Lemonpeel Angelfish, Juvenile (Centropyge flavissima) 
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              Leopard Kuteri Wrasse, Male (Macropharyngodon kuiteri) 
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              Lieutenant Tang (Acanthurus tennentii) 
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              Lineatus Clown Tang (Acanthurus lineatus) 
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              Lined Butterflyfish (Chaetodon lineolatus) 
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              Long Nose Hawkfish (Oxycirrhites typus) 
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              Longhorn Cowfish (Lactoria cornuta)