| Valid Scientific Fish Names Starting with "M" |
| n = 1,670 Search FishBase |
| Maccullochella ikei |
| Maccullochella macquariensis |
| Maccullochella peelii mariensis |
| Maccullochella peelii peelii |
| Macolor macularis |
| Macolor niger |
| Macquaria ambigua |
| Macquaria australasica |
| Macquaria colonorum |
| Macquaria novemaculeata |
| Macrhybopsis aestivalis |
| Macrhybopsis australis |
| Macrhybopsis gelida |
| Macrhybopsis hyostoma |
| Macrhybopsis marconis |
| Macrhybopsis meeki |
| Macrhybopsis storeriana |
| Macrhybopsis tetranema |
| Macrocephenchelys brachialis |
| Macrocephenchelys brevirostris |
| Macrochirichthys macrochirus |
| Macrodon ancylodon |
| Macrodon mordax |
| Macrodontogobius wilburi |
| Macrognathus aculeatus |
| Macrognathus aral |
| Macrognathus caudiocellatus |
| Macrognathus circumcinctus |
| Macrognathus guentheri |
| Macrognathus keithi |
| Macrognathus maculatus |
| Macrognathus malabaricus |
| Macrognathus meklongensis |
| Macrognathus morehensis |
| Macrognathus pancalus |
| Macrognathus semiocellatus |
| Macrognathus siamensis |
| Macrognathus taeniagaster |
| Macrognathus tapirus |
| Macrognathus zebrinus |
| Macroparalepis affinis |
| Macroparalepis brevis |
| Macroparalepis danae |
| Macroparalepis johnfitchi |
| Macroparalepis longilateralis |
| Macroparalepis macrogeneion |
| Macroparalepis nigra |
| Macropharyngodon bipartitus bipartitus |
| Macropharyngodon bipartitus marisrubri |
| Macropharyngodon choati |
| Macropharyngodon cyanoguttatus |
| Macropharyngodon geoffroy |
| Macropharyngodon kuiteri |
| Macropharyngodon meleagris |
| Macropharyngodon moyeri |
| Macropharyngodon negrosensis |
| Macropharyngodon ornatus |
| Macropharyngodon vivienae |
| Macropinna microstoma |
| Macropleurodus bicolor |
| Macropodus erythropterus |
| Macropodus hongkongensis |
| Macropodus ocellatus |
| Macropodus opercularis |
| Macropodus spechti |
| Macropsobrycon uruguayanae |
| Macropsobrycon xinguensis |
| Macroramphosus gracilis |
| Macroramphosus scolopax |
| Macrorhamphosodes platycheilus |
| Macrorhamphosodes uradoi |
| Macrosmia phalacra |
| Macrospinosa cuja |
| Macrotocinclus affinis |
| Macrotrema caligans |
| Macrouroides inflaticeps |
| Macrourus berglax |
| Macrourus carinatus |
| Macrourus holotrachys |
| Macrourus whitsoni |
| Macrurocyttus acanthopodus |
| Macruronus capensis |
| Macruronus maderensis |
| Macruronus magellanicus |
| Macruronus novaezelandiae |
| Macruroplus potronus |
| Magadanichthys skopetsi |
| Magnisudis atlantica |
| Magnisudis indica |
| Magnisudis prionosa |
| Magosternarchus duccis |
| Magosternarchus raptor |
| Mahidolia mystacina |
| Majungaichthys simplex |
| Makaira indica |
| Makaira mazara |
| Makaira nigricans |
| Makararaja chindwinensis |
| Malacanthus brevirostris |
| Malacanthus latovittatus |
| Malacanthus plumieri |
| Malacocephalus boretzi |
| Malacocephalus hawaiiensis |
| Malacocephalus laevis |
| Malacocephalus luzonensis |
| Malacocephalus nipponensis |
| Malacocephalus occidentalis |
| Malacocephalus okamurai |
| Malacocottus aleuticus |
| Malacocottus gibber |
| Malacocottus kincaidi |
| Malacocottus zonurus |
| Malacoctenus africanus |
| Malacoctenus aurolineatus |
| Malacoctenus boehlkei |
| Malacoctenus costaricanus |
| Malacoctenus delalandii |
| Malacoctenus ebisui |
| Malacoctenus erdmani |
| Malacoctenus gigas |
| Malacoctenus gilli |
| Malacoctenus hubbsi |
| Malacoctenus macropus |
| Malacoctenus margaritae |
| Malacoctenus tetranemus |
| Malacoctenus triangulatus |
| Malacoctenus versicolor |
| Malacoctenus zacae |
| Malacoctenus zonifer |
| Malacoctenus zonogaster |
| Malacoglanis gelatinosus |
| Malacoraja kreffti |
| Malacoraja obscura |
| Malacoraja senta |
| Malacoraja spinacidermis |
| Malacosarcus macrostoma |
| Malacosteus australis |
| Malacosteus niger |
| Malakichthys barbatus |
| Malakichthys elegans |
| Malakichthys griseus |
| Malakichthys levis |
| Malakichthys mochizuki |
| Malakichthys similis |
| Malakichthys wakiyae |
| Malapterurus barbatus |
| Malapterurus beninensis |
| Malapterurus cavalliensis |
| Malapterurus electricus |
| Malapterurus gossei |
| Malapterurus leonensis |
| Malapterurus melanochir |
| Malapterurus microstoma |
| Malapterurus minjiriya |
| Malapterurus monsembeensis |
| Malapterurus murrayi |
| Malapterurus occidentalis |
| Malapterurus oguensis |
| Malapterurus polli |
| Malapterurus punctatus |
| Malapterurus shirensis |
| Malapterurus stiassnyae |
| Malapterurus tanganyikaensis |
| Malapterurus tanoensis |
| Malapterurus teugelsi |
| Malapterurus thysi |
| Malapterurus zambezensis |
| Malapterus reticulatus |
| Mallotus villosus |
| Malpulutta kretseri |
| Malthopsis annulifera |
| Malthopsis gnoma |
| Malthopsis jordani |
| Malthopsis lutea |
| Malthopsis mitrigera |
| Malthopsis tiarella |
| Malvoliophis pinguis |
| Mancopsetta maculata antarctica |
| Mancopsetta maculata maculata |
| Mandibularca resinus |
| Manducus greyae |
| Manducus maderensis |
| Mangarinus waterousi |
| Manonichthys jamali |
| Manta birostris |
| Manta ehrenbergii |
| Manta raya |
| Maratecoara formosa |
| Maratecoara lacortei |
| Maratecoara splendida |
| Maravichromis anaphyrmus |
| Maravichromis balteatus |
| Maravichromis epichorialis |
| Maravichromis ericotaenia |
| Maravichromis formosus |
| Maravichromis guentheri |
| Maravichromis incola |
| Maravichromis labidodon |
| Maravichromis lateristriga |
| Maravichromis melanotaenia |
| Maravichromis mola |
| Maravichromis mollis |
| Maravichromis obtusus |
| Maravichromis plagiotaenia |
| Maravichromis semipalatus |
| Maravichromis sphaerodon |
| Marcusenius abadii |
| Marcusenius altisambesi |
| Marcusenius annamariae |
| Marcusenius bentleyi |
| Marcusenius brucii |
| Marcusenius cuangoanus |
| Marcusenius cyprinoides |
| Marcusenius deboensis |
| Marcusenius devosi |
| Marcusenius dundoensis |
| Marcusenius friteli |
| Marcusenius furcidens |
| Marcusenius fuscus |
| Marcusenius ghesquierei |
| Marcusenius greshoffii |
| Marcusenius intermedius |
| Marcusenius kutuensis |
| Marcusenius leopoldianus |
| Marcusenius livingstonii |
| Marcusenius macrolepidotus angolensis |
| Marcusenius macrolepidotus macrolepidotus |
| Marcusenius macrophthalmus |
| Marcusenius mento |
| Marcusenius meronai |
| Marcusenius monteiri |
| Marcusenius moorii |
| Marcusenius ntemensis |
| Marcusenius nyasensis |
| Marcusenius rheni |
| Marcusenius sanagaensis |
| Marcusenius schilthuisiae |
| Marcusenius senegalensis gracilis |
| Marcusenius senegalensis pfaffi |
| Marcusenius senegalensis senegalensis |
| Marcusenius stanleyanus |
| Marcusenius thomasi |
| Marcusenius ussheri |
| Marcusenius victoriae |
| Margariscus margarita |
| Margrethia obtusirostra |
| Margrethia valentinae |
| Marilyna darwinii |
| Marilyna meraukensis |
| Marilyna pleurosticta |
| Markiana geayi |
| Markiana nigripinnis |
| Marleyella bicolorata |
| Marleyella maldivensis |
| Marosatherina ladigesi |
| Maroubra perserrata |
| Maroubra yasudai |
| Marukawichthys ambulator |
| Marukawichthys pacificus |
| Mascarenichthys heemstrai |
| Mascarenichthys microphthalmus |
| Mastacembelus alboguttatus |
| Mastacembelus albomaculatus |
| Mastacembelus ansorgii |
| Mastacembelus armatus |
| Mastacembelus aviceps |
| Mastacembelus batesii |
| Mastacembelus brachyrhinus |
| Mastacembelus brevicauda |
| Mastacembelus brichardi |
| Mastacembelus catchpolei |
| Mastacembelus congicus |
| Mastacembelus crassus |
| Mastacembelus cryptacanthus |
| Mastacembelus cunningtoni |
| Mastacembelus dayi |
| Mastacembelus decorsei |
| Mastacembelus ellipsifer |
| Mastacembelus erythrotaenia |
| Mastacembelus favus |
| Mastacembelus flavidus |
| Mastacembelus flavomarginatus |
| Mastacembelus frenatus |
| Mastacembelus goro |
| Mastacembelus greshoffi |
| Mastacembelus kakrimensis |
| Mastacembelus latens |
| Mastacembelus liberiensis |
| Mastacembelus loennbergii |
| Mastacembelus marchei |
| Mastacembelus marmoratus |
| Mastacembelus mastacembelus |
| Mastacembelus micropectus |
| Mastacembelus moeruensis |
| Mastacembelus moorii |
| Mastacembelus niger |
| Mastacembelus nigromarginatus |
| Mastacembelus notophthalmus |
| Mastacembelus oatesii |
| Mastacembelus ophidium |
| Mastacembelus pantherinus |
| Mastacembelus paucispinis |
| Mastacembelus plagiostomus |
| Mastacembelus platysoma |
| Mastacembelus polli |
| Mastacembelus praensis |
| Mastacembelus robertsi |
| Mastacembelus sanagali |
| Mastacembelus sclateri |
| Mastacembelus seiteri |
| Mastacembelus sexdecimspinus |
| Mastacembelus shiloangoensis |
| Mastacembelus shiranus |
| Mastacembelus signatus |
| Mastacembelus stappersii |
| Mastacembelus taiaensis |
| Mastacembelus tanganicae |
| Mastacembelus tinwini |
| Mastacembelus traversi |
| Mastacembelus trispinosus |
| Mastacembelus ubangensis |
| Mastacembelus unicolor |
| Mastacembelus vanderwaali |
| Mastacembelus zebratus |
| Mastiglanis asopos |
| Mastigopterus imperator |
| Masturus lanceolatus |
| Masturus oxyuropterus |
| Mataeocephalus acipenserinus |
| Mataeocephalus adustus |
| Mataeocephalus hyostomus |
| Mataeocephalus microstomus |
| Mataeocephalus nigrescens |
| Mataeocephalus tenuicauda |
| Matsubaraea fusiforme |
| Matsubarichthys inusitatus |
| Matsuichthys aequipinnis |
| Mauligobius maderensis |
| Mauligobius nigri |
| Maulisia acuticeps |
| Maulisia argipalla |
| Maulisia isaacsi |
| Maulisia mauli |
| Maulisia microlepis |
| Maurolicus amethystinopunctatus |
| Maurolicus australis |
| Maurolicus breviculus |
| Maurolicus imperatorius |
| Maurolicus inventionis |
| Maurolicus japonicus |
| Maurolicus javanicus |
| Maurolicus kornilovorum |
| Maurolicus mucronatus |
| Maurolicus muelleri |
| Maurolicus parvipinnis |
| Maurolicus rudjakovi |
| Maurolicus stehmanni |
| Maurolicus walvisensis |
| Maurolicus weitzmani |
| Maxillicosta lopholepis |
| Maxillicosta meridianus |
| Maxillicosta raoulensis |
| Maxillicosta reticulata |
| Maxillicosta scabriceps |
| Maxillicosta whitleyi |
| Maylandia benetos |
| Maylandia callainos |
| Maylandia chrysomallos |
| Maylandia cyneusmarginata |
| Maylandia emmiltos |
| Maylandia flavifemina |
| Maylandia greshakei |
| Maylandia hajomaylandi |
| Maylandia mbenjii |
| Maylandia melabranchion |
| Maylandia phaeos |
| Maylandia pyrsonotos |
| Maylandia sandaracinos |
| Maylandia thapsinogen |
| Maylandia xanstomachus |
| Maylandia zebra |
| Maynea puncta |
| Mazarunia mazarunii |
| Mbipia lutea |
| Mbipia mbipi |
| Mccoskerichthys sandae |
| Mchenga conophoros |
| Mchenga cyclicos |
| Mchenga eucinostomus |
| Mchenga flavimanus |
| Mchenga inornata |
| Mchenga thinos |
| Meadia abyssalis |
| Meadia roseni |
| Mecaenichthys immaculatus |
| Meda fulgida |
| Medialuna ancietae |
| Medialuna californiensis |
| Megachasma pelagios |
| Megadontognathus cuyuniense |
| Megadontognathus kaitukaensis |
| Megalancistrus barrae |
| Megalancistrus parananus |
| Megalaspis cordyla |
| Megalebias cheradophilus |
| Megalebias elongatus |
| Megalebias monstrosus |
| Megalebias prognathus |
| Megalebias wolterstorffi |
| Megalechis picta |
| Megalechis thoracata |
| Megalobrama amblycephala |
| Megalobrama elongata |
| Megalobrama mantschuricus |
| Megalobrama pellegrini |
| Megalobrama skolkovii |
| Megalobrama terminalis |
| Megalocentor echthrus |
| Megalocottus platycephalus platycephalus |
| Megalocottus platycephalus taeniopterus |
| Megalodoras guayoensis |
| Megalodoras laevigatulus |
| Megalodoras uranoscopus |
| Megalomycter teevani |
| Megalonema argentina |
| Megalonema pauciradiatum |
| Megalonema platanum |
| Megalonema platycephalum |
| Megalonema psammium |
| Megalonema xanthum |
| Megalonibea fusca |
| Megalops atlanticus |
| Megalops cyprinoides |
| Meganthias carpenteri |
| Meganthias kingyo |
| Meganthias natalensis |
| Megarasbora elanga |
| Megupsilon aporus |
| Meiacanthus abditus |
| Meiacanthus anema |
| Meiacanthus atrodorsalis |
| Meiacanthus bundoon |
| Meiacanthus crinitus |
| Meiacanthus ditrema |
| Meiacanthus fraseri |
| Meiacanthus geminatus |
| Meiacanthus grammistes |
| Meiacanthus kamoharai |
| Meiacanthus limbatus |
| Meiacanthus lineatus |
| Meiacanthus luteus |
| Meiacanthus mossambicus |
| Meiacanthus naevius |
| Meiacanthus nigrolineatus |
| Meiacanthus oualanensis |
| Meiacanthus phaeus |
| Meiacanthus procne |
| Meiacanthus reticulatus |
| Meiacanthus smithi |
| Meiacanthus tongaensis |
| Meiacanthus urostigma |
| Meiacanthus vicinus |
| Meiacanthus vittatus |
| Mekongina bibarba |
| Mekongina erythrospila |
| Melamphaes acanthomus |
| Melamphaes danae |
| Melamphaes ebelingi |
| Melamphaes eulepis |
| Melamphaes hubbsi |
| Melamphaes indicus |
| Melamphaes janae |
| Melamphaes laeviceps |
| Melamphaes leprus |
| Melamphaes longivelis |
| Melamphaes lugubris |
| Melamphaes macrocephalus |
| Melamphaes microps |
| Melamphaes parini |
| Melamphaes parvus |
| Melamphaes polylepis |
| Melamphaes pumilus |
| Melamphaes simus |
| Melamphaes spinifer |
| Melamphaes suborbitalis |
| Melamphaes typhlops |
| Melanocetus eustalus |
| Melanocetus johnsonii |
| Melanocetus murrayi |
| Melanocetus niger |
| Melanocetus rossi |
| Melanocharacidium auroradiatum |
| Melanocharacidium blennioides |
| Melanocharacidium compressus |
| Melanocharacidium depressum |
| Melanocharacidium dispilomma |
| Melanocharacidium melanopteron |
| Melanocharacidium nigrum |
| Melanocharacidium pectorale |
| Melanocharacidium rex |
| Melanochromis auratus |
| Melanochromis baliodigma |
| Melanochromis benetos |
| Melanochromis brevis |
| Melanochromis chipokae |
| Melanochromis cyaneorhabdos |
| Melanochromis dialeptos |
| Melanochromis elastodema |
| Melanochromis heterochromis |
| Melanochromis interruptus |
| Melanochromis joanjohnsonae |
| Melanochromis johannii |
| Melanochromis labrosus |
| Melanochromis lepidiadaptes |
| Melanochromis loriae |
| Melanochromis melanopterus |
| Melanochromis mellitus |
| Melanochromis parallelus |
| Melanochromis perileucos |
| Melanochromis perspicax |
| Melanochromis robustus |
| Melanochromis simulans |
| Melanochromis vermivorus |
| Melanochromis xanthodigma |
| Melanogrammus aeglefinus |
| Melanolagus bericoides |
| Melanonus gracilis |
| Melanonus zugmayeri |
| Melanorhinus boekei |
| Melanorhinus cyanellus |
| Melanorhinus microps |
| Melanostigma atlanticum |
| Melanostigma bathium |
| Melanostigma gelatinosum |
| Melanostigma inexpectatum |
| Melanostigma orientale |
| Melanostigma pammelas |
| Melanostigma vitiazi |
| Melanostomias bartonbeani |
| Melanostomias biseriatus |
| Melanostomias globulifer |
| Melanostomias macrophotus |
| Melanostomias margaritifer |
| Melanostomias melanopogon |
| Melanostomias melanops |
| Melanostomias niger |
| Melanostomias nigroaxialis |
| Melanostomias paucilaternatus |
| Melanostomias pauciradius |
| Melanostomias pollicifer |
| Melanostomias stewarti |
| Melanostomias tentaculatus |
| Melanostomias valdiviae |
| Melanostomias vierecki |
| Melanotaenia affinis |
| Melanotaenia ajamaruensis |
| Melanotaenia angfa |
| Melanotaenia arfakensis |
| Melanotaenia australis |
| Melanotaenia batanta |
| Melanotaenia boesemani |
| Melanotaenia caerulea |
| Melanotaenia catherinae |
| Melanotaenia corona |
| Melanotaenia duboulayi |
| Melanotaenia eachamensis |
| Melanotaenia exquisita |
| Melanotaenia fluviatilis |
| Melanotaenia fredericki |
| Melanotaenia goldiei |
| Melanotaenia gracilis |
| Melanotaenia herbertaxelrodi |
| Melanotaenia irianjaya |
| Melanotaenia iris |
| Melanotaenia japenensis |
| Melanotaenia kamaka |
| Melanotaenia lacustris |
| Melanotaenia lakamora |
| Melanotaenia maccullochi |
| Melanotaenia maylandi |
| Melanotaenia misoolensis |
| Melanotaenia monticola |