• Macroparalepis affinis
• Macroparalepis brevis
• Macroparalepis nigra
• Macroramphosus scolopax snipe (trumpet) fish
  becasse de mer
  trompetero
  snipvis
  
• Macrostomias longibarbatus
• Macrourus berglax roughhead grenadier
  
• Makaira nigricans blue marlin
  makaire bleu
  aguija azul
  peito
  
• Malacocephalus laevis Softhead grenadier
  
• Malacosteus niger
• Mallotus villosus capelin
  capelan atlantique
  Lodde
  
• Margrethia obtusirostra
• Masturus lanceolatus
• Mauligobius maderensis gobie de madère
  
• Maulisia argipalla Palegold searsid
  
• Maulisia mauli maul's searsid
  
• Maulisia microlepis Smallscale searsid
  
• Maurolicus muelleri lichtend sprotje
  
• Melamphaes longivelis
• Melamphaes microps
• Melamphaes simus
• Melamphaes suborbitalis
• Melamphaes typhlops
• Melanocetus johnsoni
• Melanocetus murrayi
• Melanogrammus aeglefinus haddock
  eglefin
  Schellfisch
  piksha
  hyse
  kuller
  schelvis
  kolja
  
• Melanonus zugmayeri
• Melanostigma atlanticum
• Melanostomias bartonbeani
• Melanostomias biseriatus
• Melanostomias macrophotus
• Melanostomias melanops
• Melanostomias tentaculatus
• Melanostomias valdiviae
• Melodichthys hadrocephalus
• Merlangius merlangus whiting
  merlan
  Witting
  chernomorskaya piksha
  hvitting
  hvilling
  pismolj
  wijting
  vitling
  badejo
  medjid
  bacaliar
  
• Merluccius merluccius hake
  colin
  Seehecht
  nasello
  merluza
  Iysing
  kulmule
  oslic
  heek
  kummel
  pescada marmota
  bacaliàros
  
• Merluccius senegalensis black hake
  merlu noir
  pescada branca
  
• Mesogobius batrachocephalus knout goby
  bychok-knut
  lechos
  hanos
  
• Meteoria erythrops
• Micrenophrys lilljeborgi norway bullhead
  lilljeborgs Seeskorpion
  buichok lilljeborga
  pigulx
  smaa-ulke
  taggsimppa
  litli marhnutur
  
• Microchirus azevia bastard sole
  sole-perdrix juive
  acevia
  
• Microchirus boscanion
• Microchirus hexophthalma six-eyed sole
  
• Microchirus ocellatus eyed sole
  sole ocellée
  tambor real
  augenfleckige Seezunge
  sogliola occhiuta
  list pecatar
  glossa
  dil
  sandal naeh
  samak moussa
  busuf talghajnein
  
• Microchirus variegatus thickback sole
  sole panachee
  golleta
  sogliola fasciata
  list prugavac
  dikrugtong
  linguado-raiado
  
• Microichthys coccoi
• Microichthys sanzoi
• Microlophichthys microlophus
• Micromesistius poutassou blue whiting
  poutassou
  bacaladilla
  blauer Wittling
  potassolo
  putassu
  kolmule
  sortmund
  ugotica pucinca
  blauwe wijting
  pichelim
  
• Microstoma microstoma slender argentine