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              Macolor Niger Grunt (Macolor niger) 
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              Maroon Clownfish (Amphiprion biaculeatus) 
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              Masked Bannerfish (Heniochus monoceros) 
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              Masked Rabbitfish (Siganus puellus) 
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              McCosker's Flasher Wrasse, Male (Paracheilinus mccoskeri) 
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              Melanurus Wrasse, Female (Halichoeres melanurus (female)) 
- 
              Melanurus Wrasse, Male (Halichoeres melanurus) 
- 
              Mertensii Butterflyfish (Chaetodon mertensii) 
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              Mimic Half Black Tang (Acanthurus chronixis) 
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              Mimic Saddle Puffer Filefish (Paraluterus prionurus) 
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              Multi Colored Dottyback (Ogilbyina novaehollandiae) 
- 
              Naked Cinnamon Clownfish (Amphiprion melanopus) 
- 
              Naso Tang (Naso lituratus) 
- 
              Neon Damselfish (Pomacentrus coelestis) 
- 
              New Caledonia Sunrise Anthias, Female (Pyronotanthias timanoa) 
- 
              New Caledonia Sunrise Anthias, Male (Pyronotanthias timanoa) 
- 
              New Caledonia Sunrise Anthias, Pair (Pyronotanthias timanoa) 
- 
              Oblique Dottyback, Male (Cypho purpurascens) 
- 
              Ochre Striped Cardinalfish (Ostorhinchus compressus) 
- 
              One Striped Fang Blenny (Meiacanthus ditrema) 
- 
              Onyx Percula Clownfish (Amphiprion percula) 
- 
              Orange Body Filefish (Pervagor melanocephalus) 
- 
              Orange Shoulder Tang, Adult (Acanthurus olivaceus) 
- 
              Orange Shoulder Tang, Juvenile (Acanthurus olivaceus) 
- 
              Orange Shoulder Tang, Sub Adult (Acanthurus olivaceus) 
- 
              Orange Skunk Clownfish (Amphiprion sandaracinos) 
- 
              Orange Spot Filefish (Oxymonacanthus longirostris) 
- 
              Orange Spotted Dottyback (Pseudochromis marshallensis) 
- 
              Orange Stripe Bristletooth Tang (Ctenochaetus cf striatus) 
- 
              Orangetail Filefish (Pervagor melanocephalus)