Moorish idol 
Mosaic Leatherjacket 
Mottled Grouper 
Mottled Soapfish 
Mountain Mullet 
Mountain shiner 
Moyer's Dragonet 
Mozambique Tilapia 
Mud-reef Goby 
Multilined Puffer 
Muraena lentiginosa 
Murrays abyssal anglerfish 
Mushroom-coral pipefish 
Mutton snapper 
Myripristis kuntee 
Myripristis murdjan 
Nakedhead Shrimpgoby 
Namiye's coralblenny 
Napoleon snake eel 
Narrow-lined puffer 
Nasal-bar pygmygoby 
Naso thynnoides 
Nassau grouper 
Natal Knifejaw