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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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              Lined Seahorse (Hippocampus erectus) 
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              Long Nose Hawkfish (Oxycirrhites typus) 
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              Longhorn Cowfish (Lactoria cornuta) 
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              Lyretail Anthias, Female (Pseudanthias squamipinnis) 
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              Lyretail Anthias, Male (Pseudanthias squamipinnis) 
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              Lyretail Hogfish (Bodianus anthioides) 
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              Lyretail Wrasse (Thalassoma lunare) 
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              Macolor Niger Grunt (Macolor niger) 
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              Madagascar Spotted Coral Croucher Scorpionfish (Caracanthus madagascariensis) 
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              Malabar Blood Snapper (Lutjanus malabaricus) 
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              Marine Betta Grouper (Calloplesiops altivelis) 
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              Maroon Clownfish (Amphiprion biaculeatus) 
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              Maroon Clownfish, Yellow Stripe (Amphiprion biaculeatus) 
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              Masked Bannerfish (Heniochus monoceros) 
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              Masked Shrimp Goby (Amblyeleotris gymnocephala) 
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              McCosker's Flasher Wrasse (Paracheilinus mccoskeri) 
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              McCosker's Flasher Wrasse, Male (Paracheilinus mccoskeri) 
- 
              Midas Blenny (Ecsenius midas) 
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              Miles Lionfish (Pterois miles) 
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              Mimic Blenny (Ecsenius gravieri) 
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              Mitratus Butterflyfish (Chaetodon mitratus) 
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              Molly Miller Blenny (Scartella cristata) 
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              Mombasae Lionfish (Pterois mombasae) 
- 
              Mono Argenteus (Monodactylus argenteus) 
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              Multi Spine Damsefish (Neoglyphidodon polyacanthus) 
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              Mustard Guttatus Tang (Acanthurus guttatus) 
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              Naoko's Fairy Wrasse (Cirrhilabrus naokoae)