- 
              Imperator Angelfish, w/Streamers (Pomacanthus imperator) 
- 
              Jansen's Wrasse (Thalassoma jansenii) 
- 
              Jordan's Tuskfish (Choerodon jordani) 
- 
              Keyhole Angelfish (Centropyge tibicen) 
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              Koran Angelfish, Juvenile (Pomacanthus semicirculatus) 
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              Koran Angelfish, Sub-Adult (Pomacanthus semicirculatus) 
- 
              Kuiter's Leopard Wrasse (Macropharyngodon kuiteri) 
- 
              Laboute's Fairy Wrasse (Cirrhilabrus laboutei) 
- 
              Laboute's Fairy Wrasse, Male (Cirrhilabrus laboutei) 
- 
              Lamarck's Angelfish, Female (Genicanthus lamarck) 
- 
              Lamarck's Angelfish, Male (Genicanthus lamarck) 
- 
              Latticed Butterflyfish (Chaetodon rafflesi) 
- 
              Lavender Tang (Acanthurus nigrofuscus) 
- 
              Lemon Peel Mimic Tang (Acanthurus pyroferus) 
- 
              Lemon Tang (Acanthurus pyroferus) 
- 
              Lemonpeel Angelfish (Centropyge flavissima) 
- 
              Leopard Kuteri Wrasse, Male (Macropharyngodon kuiteri) 
- 
              Lineatus Clown Tang (Acanthurus lineatus) 
- 
              Lineatus Fairy Wrasse (Cirrhilabrus lineatus) 
- 
              Lineatus Fairy Wrasse, Male (Cirrhilabrus lineatus) 
- 
              Lineatus Fairy Wrasse, Super Male (Cirrhilabrus lineatus) 
- 
              Long Nose Hawkfish (Oxycirrhites typus) 
- 
              Longspine Cardinalfish (Zoramia leptacantha) 
- 
              Lori's Anthias (Pseudanthias lori) 
- 
              Luzon Anthias (Pseudanthias luzonensis) 
- 
              Lyretail Anthias, Female (Pseudanthias squamipinnis) 
- 
              Lyretail Anthias, Male (Pseudanthias squamipinnis) 
- 
              Lyretail Hogfish (Bodianus anthioides) 
- 
              Lyretail Wrasse (Thalassoma lunare) 
- 
              Macneill's Assessor Basslet (Assessor macneilli)