Mangrove red snapper 
Mangrove snapper 
Many-eyed snake-eel 
Many-host Ghostgoby 
Many-lined cardinalfish 
Many-lined Sweetlips 
Manybar goatfish 
Map puffer 
Marble-Mouthed Frogfish 
Marbled snake eel 
Marbled Stargazer 
Margined Flyingfish 
Margined Sole 
Maroon clownfish 
Masked goby 
Masked Moray 
Masked Puffer 
Masked spinefoot 
Mbu pufferfish 
Mediterranean Cardinalfish 
Mediterranean moray 
Mediterranean parrotfish 
Mediterranean rainbow wrasse 
Medusa Blenny