M
- Mackerel
- Mackerel shark
- Madtom
- Mahi-mahi
- Mahseer
- Mail-cheeked fish
- Mako shark
- Mandarin fish
- Manefish
- Man-of-war fish
- Manta Ray
- Marblefish
- Marine hatchetfish
- Marlin
- Masu salmon
- Medaka
- Medusafish
- Megamouth shark
- Menhaden
- Merluccid hake
- Mexican blind cavefish
- Mexican golden trout
- Midshipman
- Milkfish
- Minnow
- Modoc sucker
- Mojarra
- Mola
- Molly
- Molly Miller
- Monkeyface prickleback
- Monkfish
- Mooneye
- Moonfish
- Moorish idol
- Mora
- Moray eel
- Morid cod
- Morwong
- Moses sole
- Mosquitofish
- Mosshead warbonnet
- Mouthbrooder
- Mozambique tilapia
- Mrigal
- Mud catfish (Mud cat)
- Mudfish
- Mudminnow
- Mud minnow
- Mudskipper
- Mudsucker
- Mullet
- Mummichog
- Murray cod
- Muskellunge
- Mustache triggerfish
- Mustard eel
Read more about this topic: List Of Common Fish Names