| Order | Family | Species | Occurrence | FishBase name | Name in Country |
|---|---|---|---|---|---|
| Acipenseriformes | Acipenseridae | Acipenser sturio | native | Sturgeon | Bradan Fearna |
| Perciformes/Cottoidei | Agonidae | Agonus cataphractus | native | Hooknose | An muíricín |
| Aulopiformes | Alepisauridae | Alepisaurus ferox | native | Long snouted lancetfish | |
| Alepocephaliformes | Alepocephalidae | Alepocephalus agassizii | native | Agassiz' slickhead | |
| Alepocephaliformes | Alepocephalidae | Alepocephalus australis | native | Small scaled brown slickhead | |
| Alepocephaliformes | Alepocephalidae | Alepocephalus bairdii | native | Baird's slickhead | |
| Alepocephaliformes | Alepocephalidae | Alepocephalus productus | native | Smalleye smooth-head | |
| Alepocephaliformes | Alepocephalidae | Alepocephalus rostratus | native | Risso's smooth-head | |
| Lamniformes | Alopiidae | Alopias vulpinus | native | Thresher | |
| Clupeiformes | Alosidae | Alosa alosa | native | Allis shad | Allis shad |
| Clupeiformes | Alosidae | Alosa fallax | native | Twaite shad | An tsead fhallasach |
| Rajiformes | Rajidae | Amblyraja jenseni | native | Shorttail skate | |
| Rajiformes | Rajidae | Amblyraja radiata | native | Starry ray | |
| Perciformes/Uranoscopoidei | Ammodytidae | Ammodytes marinus | native | Lesser sand-eel | |
| Perciformes/Uranoscopoidei | Ammodytidae | Ammodytes tobianus | native | Small sandeel | Corr ghainimh bheag/ an corr |
| Perciformes/Zoarcoidei | Anarhichadidae | Anarhichas lupus | native | Atlantic wolffish | |
| Anguilliformes | Anguillidae | Anguilla anguilla | native | European eel | Eascann |
| Trachichthyiformes | Anoplogastridae | Anoplogaster cornuta | native | Common fangtooth | |
| Gadiformes | Moridae | Antimora rostrata | native | Blue antimora | |
| Scombriformes | Trichiuridae | Aphanopus carbo | native | Black scabbardfish | |
| Gobiiformes | Gobiidae | Aphia minuta | native | Transparent goby | |
| Gobiesociformes | Gobiesocidae | Apletodon dentatus | native | Small-headed clingfish | |
| Carcharhiniformes | Pentanchidae | Apristurus laurussonii | native | Iceland catshark | |
| Carcharhiniformes | Pentanchidae | Apristurus manis | native | Ghost catshark | |
| Carcharhiniformes | Pentanchidae | Apristurus melanoasper | native | Black roughscale catshark | |
| Aulopiformes | Paralepididae | Arctozenus risso | native | Spotted barracudina | |
| Argentiniformes | Argentinidae | Argentina silus | native | Greater argentine | |
| Argentiniformes | Argentinidae | Argentina sphyraena | native | Argentine | |
| Stomiiformes | Sternoptychidae | Argyropelecus hemigymnus | native | Half-naked hatchetfish | |
| Stomiiformes | Sternoptychidae | Argyropelecus olfersii | native | ||
| Pleuronectiformes | Bothidae | Arnoglossus imperialis | native | Imperial scaldfish | |
| Pleuronectiformes | Bothidae | Arnoglossus laterna | native | Mediterranean scaldfish | |
| Pleuronectiformes | Bothidae | Arnoglossus thori | native | Thor's scaldfish | |
| Perciformes/Cottoidei | Cottidae | Artediellus atlanticus | native | Atlantic hookear sculpin | |
| Atheriniformes | Atherinidae | Atherina presbyter | native | Sand smelt | Trosgan |
| Scombriformes | Scombridae | Auxis rochei | native | Bullet tuna | |
| Scombriformes | Scombridae | Auxis thazard | native | Frigate tuna | |
| Tetraodontiformes | Balistidae | Balistes capriscus | native | Grey triggerfish | |
| Ophidiiformes | Ophidiidae | Bassozetus taenia | native | ||
| Gadiformes | Bathygadidae | Bathygadus melanobranchus | native | Vaillant's grenadier | |
| Alepocephaliformes | Alepocephalidae | Bathylaco nigricans | native | Black warrior | |
| Argentiniformes | Bathylagidae | Bathylagus euryops | native | Goiter blacksmelt | |
| Aulopiformes | Ipnopidae | Bathypterois dubius | native | Spiderfish | |
| Aulopiformes | Ipnopidae | Bathypterois longipes | native | Abyssal spiderfish | |
| Aulopiformes | Bathysauridae | Bathysaurus ferox | native | Deep-sea lizardfish | |
| Aulopiformes | Bathysauridae | Bathysaurus mollis | native | Highfin lizardfish | |
| Pleuronectiformes | Soleidae | Bathysolea profundicola | native | Deepwater sole | |
| Alepocephaliformes | Alepocephalidae | Bathytroctes macrolepis | native | Koefoed's smooth-head | |
| Alepocephaliformes | Alepocephalidae | Bathytroctes michaelsarsi | native | Michael Sars smooth-head | |
| Alepocephaliformes | Alepocephalidae | Bathytroctes microlepis | native | Smallscale smooth-head | |
| Beloniformes | Belonidae | Belone belone | native | Garfish | An chorr uaine |
| Beloniformes | Belonidae | Belone svetovidovi | native | ||
| Myctophiformes | Myctophidae | Benthosema glaciale | native | Glacier lantern fish | |
| Beryciformes | Berycidae | Beryx decadactylus | native | Alfonsino | |
| Eupercaria/misc | Sparidae | Boops boops | native | Bogue | |
| Stomiiformes | Stomiidae | Borostomias antarcticus | native | Snaggletooth | |
| Scombriformes | Bramidae | Brama brama | native | Atlantic pomfret | |
| Gadiformes | Lotidae | Brosme brosme | native | Cusk | |
| Gobiiformes | Gobiidae | Buenia jeffreysii | native | Jeffrey's goby | |
| Pleuronectiformes | Soleidae | Buglossidium luteum | native | Solenette | |
| Callionymiformes | Callionymidae | Callionymus lyra | native | Dragonet | An tlascán nimhe |
| Callionymiformes | Callionymidae | Callionymus maculatus | native | ||
| Callionymiformes | Callionymidae | Callionymus reticulatus | native | Reticulated dragonet | |
| Carangiformes | Carangidae | Campogramma glaycos | native | Vadigo | |
| Acanthuriformes | Caproidae | Capros aper | native | Boarfish | |
| Perciformes/Cottoidei | Liparidae | Careproctus aciculipunctatus | native | ||
| Perciformes/Cottoidei | Liparidae | Careproctus merretti | native | Merret's snailfish | |
| Ophidiiformes | Bythitidae | Cataetyx alleni | native | ||
| Ophidiiformes | Bythitidae | Cataetyx laticeps | native | ||
| Eupercaria/misc | Labridae | Centrolabrus exoletus | native | Rock cook | |
| Squaliformes | Centrophoridae | Centrophorus squamosus | native | Leafscale gulper shark | |
| Squaliformes | Etmopteridae | Centroscyllium fabricii | native | Black dogfish | |
| Squaliformes | Somniosidae | Centroscymnus coelolepis | native | Portuguese dogfish | |
| Squaliformes | Somniosidae | Centroselachus crepidater | native | Longnose velvet dogfish | |
| Eupercaria/misc | Cepolidae | Cepola macrophthalma | native | Red bandfish | |
| Lamniformes | Cetorhinidae | Cetorhinus maximus | native | Basking shark | An liamhán gréine |
| Lophiiformes | Oneirodidae | Chaenophryne longiceps | native | Can-opener smoothdream | |
| Perciformes/Scorpaenoidei | Triglidae | Chelidonichthys cuculus | native | Red gurnard | |
| Perciformes/Scorpaenoidei | Triglidae | Chelidonichthys lastoviza | native | Streaked gurnard | |
| Perciformes/Scorpaenoidei | Triglidae | Chelidonichthys lucerna | native | Tub gurnard | An cnúdan gorm |
| Perciformes/Scorpaenoidei | Triglidae | Chelidonichthys obscurus | native | Longfin gurnard | |
| Mugiliformes | Mugilidae | Chelon auratus | native | Golden grey mullet | Golden grey mullet |
| Mugiliformes | Mugilidae | Chelon labrosus | native | Thicklip grey mullet | An lannach glas |
| Mugiliformes | Mugilidae | Chelon ramada | native | Thinlip grey mullet | Thin-lipped grey mullet |
| Chimaeriformes | Chimaeridae | Chimaera monstrosa | native | Rabbit fish | |
| Perciformes/Zoarcoidei | Stichaeidae | Chirolophis ascanii | native | Yarrell's blenny | |
| Hexanchiformes | Chlamydoselachidae | Chlamydoselachus anguineus | native | Frilled shark | |
| Gadiformes | Gaidropsaridae | Ciliata mustela | native | Fivebeard rockling | Donnán cúig ribe |
| Gadiformes | Gaidropsaridae | Ciliata septentrionalis | native | Northern rockling | |
| Clupeiformes | Clupeidae | Clupea harengus | native | Atlantic herring | An scadán |
| Gadiformes | Macrouridae | Coelorinchus caelorhincus | native | Hollowsnout grenadier | |
| Gadiformes | Macrouridae | Coelorinchus labiatus | native | Spearsnouted grenadier | |
| Anguilliformes | Congridae | Conger conger | native | European conger | An eascann choncair |
| Alepocephaliformes | Alepocephalidae | Conocara macropterum | native | Longfin smooth-head | |
| Alepocephaliformes | Alepocephalidae | Conocara microlepis | native | Elongate smooth-head | |
| Alepocephaliformes | Alepocephalidae | Conocara murrayi | native | Murray's smooth-head | |
| Alepocephaliformes | Alepocephalidae | Conocara salmoneum | native | Salmon smooth-head | |
| Carangiformes | Coryphaenidae | Coryphaena hippurus | native | Common dolphinfish | |
| Gadiformes | Macrouridae | Coryphaenoides armatus | native | Abyssal grenadier | |
| Gadiformes | Macrouridae | Coryphaenoides brevibarbis | native | ||
| Gadiformes | Macrouridae | Coryphaenoides carapinus | native | Carapine grenadier | |
| Gadiformes | Macrouridae | Coryphaenoides guentheri | native | Günther's grenadier | |
| Gadiformes | Macrouridae | Coryphaenoides leptolepis | native | Ghostly grenadier | |
| Gadiformes | Macrouridae | Coryphaenoides mediterraneus | native | Mediterranean grenadier | |
| Gadiformes | Macrouridae | Coryphaenoides profundicolus | native | Deepwater grenadier | |
| Gadiformes | Macrouridae | Coryphaenoides rupestris | native | Roundnose grenadier | |
| Blenniiformes | Blenniidae | Coryphoblennius galerita | native | Montagu's blenny | |
| Perciformes/Cottoidei | Psychrolutidae | Cottunculus thomsonii | native | Pallid sculpin | |
| Gobiiformes | Gobiidae | Crystallogobius linearis | native | Crystal goby | |
| Eupercaria/misc | Labridae | Ctenolabrus rupestris | native | Goldsinny-wrasse | |
| Scombriformes | Nomeidae | Cubiceps gracilis | native | Driftfish | |
| Perciformes/Cottoidei | Cyclopteridae | Cyclopterus lumpus | native | Lumpfish | An léasán leice |
| Stomiiformes | Gonostomatidae | Cyclothone alba | native | Bristlemouth | |
| Squaliformes | Dalatiidae | Dalatias licha | native | Kitefin shark | |
| Squaliformes | Centrophoridae | Deania calceus | native | Birdbeak dogfish | |
| Eupercaria/misc | Sparidae | Dentex dentex | native | Common dentex | |
| Myctophiformes | Myctophidae | Diaphus metopoclampus | native | Spothead lantern fish | |
| Myctophiformes | Myctophidae | Diaphus rafinesquii | native | White-spotted lantern fish | |
| Eupercaria/misc | Moronidae | Dicentrarchus labrax | native | European seabass | Doingean |
| Gobiesociformes | Gobiesocidae | Diplecogaster bimaculata | native | Two-spotted clingfish | |
| Rajiformes | Rajidae | Dipturus batis | native | Blue skate | An sciata |
| Rajiformes | Rajidae | Dipturus intermedius | native | ||
| Rajiformes | Rajidae | Dipturus nidarosiensis | native | Norwegian skate | |
| Rajiformes | Rajidae | Dipturus oxyrinchus | native | Longnosed skate | |
| Trachichthyiformes | Diretmidae | Diretmus argenteus | native | Silver spinyfin | |
| Perciformes/Percoidei | Trachinidae | Echiichthys vipera | native | Lesser weever | Goineadóir |
| Echinorhiniformes | Echinorhinidae | Echinorhinus brucus | native | Bramble shark | |
| Ophidiiformes | Carapidae | Echiodon drummondii | native | ||
| Myctophiformes | Myctophidae | Electrona risso | native | Electric lantern fish | |
| Gadiformes | Gaidropsaridae | Enchelyopus cimbrius | native | Fourbeard rockling | |
| Clupeiformes | Engraulidae | Engraulis encrasicolus | native | European anchovy | |
| Syngnathiformes | Syngnathidae | Entelurus aequoreus | native | Snake pipefish | |
| Acropomatiformes | Epigonidae | Epigonus telescopus | native | Black cardinal fish | |
| Squaliformes | Etmopteridae | Etmopterus princeps | native | Great lanternshark | |
| Squaliformes | Etmopteridae | Etmopterus spinax | native | Velvet belly | |
| Saccopharyngiformes | Eurypharyngidae | Eurypharynx pelecanoides | native | Pelican eel | |
| Perciformes/Scorpaenoidei | Triglidae | Eutrigla gurnardus | native | Grey gurnard | |
| Gadiformes | Gadidae | Gadiculus argenteus | native | Silvery pout | |
| Gadiformes | Gadidae | Gadiculus thori | native | Silvery cod | |
| Gadiformes | Gadidae | Gadus morhua | native | Atlantic cod | An trosc |
| Gadiformes | Gaidropsaridae | Gaidropsarus argentatus | native | Arctic rockling | |
| Gadiformes | Gaidropsaridae | Gaidropsarus macrophthalmus | native | Bigeye rockling | |
| Gadiformes | Gaidropsaridae | Gaidropsarus mediterraneus | native | Shore rockling | |
| Gadiformes | Gaidropsaridae | Gaidropsarus vulgaris | native | Three-bearded rockling | |
| Carcharhiniformes | Triakidae | Galeorhinus galeus | native | Tope shark | An fanach |
| Carcharhiniformes | Pentanchidae | Galeus melastomus | native | Blackmouth catshark | |
| Perciformes/Gasterosteoidei | Gasterosteidae | Gasterosteus aculeatus | native | Three-spined stickleback | Agathero |
| Pleuronectiformes | Pleuronectidae | Glyptocephalus cynoglossus | native | Witch flounder | |
| Gobiiformes | Gobiidae | Gobius couchi | native | Couch's goby | |
| Gobiiformes | Gobiidae | Gobius cruentatus | native | Red-mouthed goby | |
| Gobiiformes | Gobiidae | Gobius niger | native | Black goby | |
| Stomiiformes | Stomiidae | Grammatostomias flagellibarba | native | ||
| Gadiformes | Moridae | Guttigadus latifrons | native | ||
| Perciformes/Uranoscopoidei | Ammodytidae | Gymnammodytes semisquamatus | native | Smooth sandeel | |
| Gadiformes | Moridae | Halargyreus johnsonii | native | Slender codling | |
| Notacanthiformes | Halosauridae | Halosauropsis macrochir | native | Abyssal halosaur | |
| Notacanthiformes | Halosauridae | Halosaurus johnsonianus | native | Halosaur | |
| Chimaeriformes | Rhinochimaeridae | Harriotta raleighana | native | Pacific longnose chimaera | |
| Perciformes/Scorpaenoidei | Sebastidae | Helicolenus dactylopterus | native | Blackbelly rosefish | |
| Hexanchiformes | Hexanchidae | Hexanchus griseus | native | Bluntnose sixgill shark | |
| Syngnathiformes | Syngnathidae | Hippocampus guttulatus | native | Long-snouted seahorse | |
| Pleuronectiformes | Pleuronectidae | Hippoglossoides platessoides | native | American plaice | |
| Pleuronectiformes | Pleuronectidae | Hippoglossus hippoglossus | native | Atlantic halibut | An haileabó |
| Anguilliformes | Synaphobranchidae | Histiobranchus bathybius | native | Deep-water arrowtooth eel | |
| Alepocephaliformes | Platytroctidae | Holtbyrnia anomala | native | Bighead searsid | |
| Trachichthyiformes | Trachichthyidae | Hoplostethus atlanticus | native | Orange roughy | |
| Trachichthyiformes | Trachichthyidae | Hoplostethus mediterraneus | native | Mediterranean slimehead | |
| Chimaeriformes | Chimaeridae | Hydrolagus affinis | native | Smalleyed rabbitfish | |
| Chimaeriformes | Chimaeridae | Hydrolagus mirabilis | native | Large-eyed rabbitfish | |
| Gadiformes | Macrouridae | Hymenocephalus italicus | native | Glasshead grenadier | |
| Scombriformes | Centrolophidae | Hyperoglyphe perciformis | native | Barrelfish | |
| Perciformes/Uranoscopoidei | Ammodytidae | Hyperoplus immaculatus | native | Greater sand-eel | |
| Perciformes/Uranoscopoidei | Ammodytidae | Hyperoplus lanceolatus | native | Great sandeel | |
| Anguilliformes | Synaphobranchidae | Ilyophis arx | native | ||
| Anguilliformes | Synaphobranchidae | Ilyophis blachei | native | ||
| Anguilliformes | Synaphobranchidae | Ilyophis brunneus | native | Muddy arrowtooth eel | |
| Lamniformes | Lamnidae | Isurus oxyrinchus | native | Shortfin mako | |
| Scombriformes | Scombridae | Katsuwonus pelamis | native | Skipjack tuna | |
| Eupercaria/misc | Labridae | Labrus bergylta | native | Ballan wrasse | |
| Eupercaria/misc | Labridae | Labrus mixtus | native | Cuckoo wrasse | |
| Lamniformes | Lamnidae | Lamna nasus | native | Porbeagle | An craosaire |
| Myctophiformes | Myctophidae | Lampanyctus intricarius | native | Diamondcheek lanternfish | |
| Myctophiformes | Myctophidae | Lampanyctus macdonaldi | native | Rakery beaconlamp | |
| Petromyzontiformes | Petromyzontidae | Lampetra fluviatilis | native | River lamprey | Peist da shuil deag |
| Lampriformes | Lampridae | Lampris guttatus | native | Opah | |
| Gobiesociformes | Gobiesocidae | Lepadogaster candolii | native | Connemarra clingfish | |
| Gadiformes | Moridae | Lepidion eques | native | North Atlantic codling | |
| Scombriformes | Trichiuridae | Lepidopus caudatus | native | Silver scabbardfish | |
| Pleuronectiformes | Scophthalmidae | Lepidorhombus boscii | native | Four-spot megrim | |
| Pleuronectiformes | Scophthalmidae | Lepidorhombus whiffiagonis | native | Megrim | |
| Alepocephaliformes | Alepocephalidae | Leptochilichthys agassizii | native | Agassiz' smooth-head | |
| Stomiiformes | Stomiidae | Leptostomias gladiator | native | ||
| Gobiiformes | Gobiidae | Lesueurigobius friesii | native | Fries's goby | |
| Rajiformes | Rajidae | Leucoraja circularis | native | Sandy ray | |
| Rajiformes | Rajidae | Leucoraja fullonica | native | Shagreen ray | |
| Rajiformes | Rajidae | Leucoraja naevus | native | Cuckoo ray | |
| Pleuronectiformes | Pleuronectidae | Limanda limanda | native | Common dab | |
| Perciformes/Cottoidei | Liparidae | Liparis liparis | native | Striped seasnail | |
| Perciformes/Cottoidei | Liparidae | Liparis montagui | native | Montagus seasnail | |
| Blenniiformes | Blenniidae | Lipophrys pholis | native | Shanny | Ceannruán |
| Myctophiformes | Myctophidae | Lobianchia gemellarii | native | Cocco's lantern fish | |
| Lophiiformes | Lophiidae | Lophius budegassa | native | Blackbellied angler | |
| Lophiiformes | Lophiidae | Lophius piscatorius | native | Angler | An láimhíneach |
| Perciformes/Zoarcoidei | Zoarcidae | Lycenchelys alba | native | ||
| Perciformes/Zoarcoidei | Zoarcidae | Lycodes terraenovae | native | ||
| Gadiformes | Lyconidae | Lyconus brachycolus | native | ||
| Gadiformes | Macrouridae | Macrourus berglax | native | Roughhead grenadier | |
| Aulopiformes | Paralepididae | Magnisudis atlantica | native | Duckbill barracudina | |
| Gadiformes | Macrouridae | Malacocephalus laevis | native | Softhead grenadier | |
| Alepocephaliformes | Platytroctidae | Maulisia mauli | native | Maul's searsid | |
| Stomiiformes | Sternoptychidae | Maurolicus muelleri | native | Silvery lightfish | |
| Elopiformes | Megalopidae | Megalops atlanticus | native | Tarpon | |
| Gadiformes | Gadidae | Melanogrammus aeglefinus | native | Haddock | An chadóg |
| Gadiformes | Gadidae | Merlangius merlangus | native | Whiting | An faoitín |
| Gadiformes | Merlucciidae | Merluccius merluccius | native | European hake | An colmóir |
| Perciformes/Cottoidei | Cottidae | Micrenophrys lilljeborgii | native | Norway bullhead | |
| Pleuronectiformes | Soleidae | Microchirus variegatus | native | Thickback sole | |
| Gadiformes | Gadidae | Micromesistius poutassou | native | Blue whiting | |
| Argentiniformes | Microstomatidae | Microstoma microstoma | native | Slender argentine | |
| Pleuronectiformes | Pleuronectidae | Microstomus kitt | native | Lemon sole | |
| Myliobatiformes | Mobulidae | Mobula mobular | native | Devil fish | |
| Tetraodontiformes | Molidae | Mola mola | native | Ocean sunfish | |
| Gadiformes | Lotidae | Molva dypterygia | native | Blue ling | |
| Gadiformes | Lotidae | Molva macrophthalma | native | Spanish ling | |
| Gadiformes | Lotidae | Molva molva | native | Ling | An langa |
| Gadiformes | Moridae | Mora moro | native | Common mora | |
| Mulliformes | Mullidae | Mullus barbatus | native | Red mullet | |
| Mulliformes | Mullidae | Mullus surmuletus | native | Surmullet | An milléad dearg |
| Carcharhiniformes | Triakidae | Mustelus asterias | native | Starry smooth-hound | An scoirneach ballach |
| Carcharhiniformes | Triakidae | Mustelus mustelus | native | Smooth-hound | |
| Myctophiformes | Myctophidae | Myctophum punctatum | native | Spotted lanternfish | |
| Myliobatiformes | Myliobatidae | Myliobatis aquila | native | Common eagle ray | |
| Perciformes/Cottoidei | Cottidae | Myoxocephalus scorpius | native | Shorthorn sculpin | An pus tairbh |
| Myxiniformes | Myxinidae | Myxine glutinosa | native | Atlantic hagfish | Borer |
| Myxiniformes | Myxinidae | Myxine ios | native | White-headed hagfish | |
| Argentiniformes | Microstomatidae | Nansenia groenlandica | native | Greenland argentine | |
| Argentiniformes | Microstomatidae | Nansenia oblita | native | ||
| Alepocephaliformes | Alepocephalidae | Narcetes stomias | native | Blackhead salmon | |
| Carangiformes | Carangidae | Naucrates ductor | native | Pilotfish | |
| Zeiformes | Oreosomatidae | Neocyttus helgae | native | False boarfish | |
| Rajiformes | Rajidae | Neoraja caerulea | native | Blue ray | |
| Syngnathiformes | Syngnathidae | Nerophis lumbriciformis | native | Worm pipefish | |
| Syngnathiformes | Syngnathidae | Nerophis ophidion | native | Straightnose pipefish | |
| Scombriformes | Gempylidae | Nesiarchus nasutus | native | Black gemfish | |
| Gadiformes | Macrouridae | Nezumia aequalis | native | Common Atlantic grenadier | |
| Alepocephaliformes | Platytroctidae | Normichthys operosus | native | Multipore searsid | |
| Notacanthiformes | Notacanthidae | Notacanthus bonaparte | native | Shortfin spiny eel | |
| Notacanthiformes | Notacanthidae | Notacanthus chemnitzii | native | Snubnosed spiny eel | |
| Myctophiformes | Myctophidae | Notolychnus valdiviae | native | Topside lampfish | |
| Lophiiformes | Oneirodidae | Oneirodes carlsbergi | native | ||
| Lophiiformes | Oneirodidae | Oneirodes eschrichtii | native | Bulbous dreamer | |
| Argentiniformes | Opisthoproctidae | Opisthoproctus soleatus | native | Barrel-eye | |
| Osmeriformes | Osmeridae | Osmerus eperlanus | native | European smelt | Cualarach |
| Squaliformes | Oxynotidae | Oxynotus centrina | native | Angular roughshark | |
| Squaliformes | Oxynotidae | Oxynotus paradoxus | native | Sailfin roughshark | |
| Perciformes/Zoarcoidei | Zoarcidae | Pachycara bulbiceps | native | Snubnose eelpout | |
| Perciformes/Zoarcoidei | Zoarcidae | Pachycara crassiceps | native | ||
| Eupercaria/misc | Sparidae | Pagellus bogaraveo | native | Blackspot seabream | An deargán |
| Eupercaria/misc | Sparidae | Pagellus erythrinus | native | Common pandora | |
| Blenniiformes | Blenniidae | Parablennius gattorugine | native | Tompot blenny | Ceannruán rocach |
| Gadiformes | Macrouridae | Paracetonurus flagellicauda | native | ||
| Aulopiformes | Paralepididae | Paralepis coregonoides | native | Sharpchin barracudina | |
| Perciformes/Cottoidei | Liparidae | Paraliparis abyssorum | native | ||
| Perciformes/Cottoidei | Liparidae | Paraliparis bathybius | native | Black seasnail | |
| Perciformes/Cottoidei | Liparidae | Paraliparis bipolaris | native | ||
| Perciformes/Cottoidei | Liparidae | Paraliparis hystrix | native | ||
| Petromyzontiformes | Petromyzontidae | Petromyzon marinus | native | Sea lamprey | Lamproie |
| Perciformes/Zoarcoidei | Pholidae | Pholis gunnellus | native | Rock gunnel | Sleamhnóg |
| Gadiformes | Phycidae | Phycis blennoides | native | Greater forkbeard | |
| Pleuronectiformes | Pleuronectidae | Platichthys flesus | native | European flounder | Leadhbhóg |
| Pleuronectiformes | Pleuronectidae | Pleuronectes platessa | native | European plaice | An leathóg bhallach |
| Gadiformes | Gadidae | Pollachius pollachius | native | Pollack | An mangach |
| Gadiformes | Gadidae | Pollachius virens | native | Saithe | |
| Notacanthiformes | Notacanthidae | Polyacanthonotus challengeri | native | Longnose tapirfish | |
| Notacanthiformes | Notacanthidae | Polyacanthonotus rissoanus | native | Smallmouth spiny eel | |
| Stomiiformes | Phosichthyidae | Polymetme corythaeola | native | Rendezvous fish | |
| Stomiiformes | Phosichthyidae | Polymetme thaeocoryla | native | ||
| Acropomatiformes | Polyprionidae | Polyprion americanus | native | Wreckfish | |
| Scombriformes | Pomatomidae | Pomatomus saltatrix | native | Bluefish | |
| Gobiiformes | Gobiidae | Pomatoschistus flavescens | native | Two-spotted goby | Mac siobháin buí |
| Gobiiformes | Gobiidae | Pomatoschistus lozanoi | native | Lozano's goby | |
| Gobiiformes | Gobiidae | Pomatoschistus microps | native | Common goby | An mac siobháin lubhir |
| Gobiiformes | Gobiidae | Pomatoschistus minutus | native | Sand goby | Mac siobháin gainimh |
| Gobiiformes | Gobiidae | Pomatoschistus pictus | native | Painted goby | |
| Beryciformes | Melamphaidae | Poromitra nigriceps | native | ||
| Carcharhiniformes | Carcharhinidae | Prionace glauca | native | Blue shark | An siorc gorm |
| Myctophiformes | Myctophidae | Protomyctophum arcticum | native | Arctic telescope | |
| Myliobatiformes | Dasyatidae | Pteroplatytrygon violacea | native | Pelagic stingray | |
| Perciformes/Gasterosteoidei | Gasterosteidae | Pungitius laevis | native | Smoothtail ninespine stickleback | |
| Rajiformes | Rajidae | Raja brachyura | native | Blonde ray | |
| Rajiformes | Rajidae | Raja clavata | native | Thornback ray | Thornback ray |
| Rajiformes | Rajidae | Raja microocellata | native | Small-eyed ray | |
| Rajiformes | Rajidae | Raja montagui | native | Spotted ray | |
| Rajiformes | Rajidae | Raja undulata | native | Undulate ray | |
| Rajiformes | Rajidae | Rajella bathyphila | native | Deep-water ray | |
| Rajiformes | Rajidae | Rajella bigelowi | native | Bigelow's ray | |
| Rajiformes | Rajidae | Rajella fyllae | native | Round ray | |
| Gadiformes | Ranicipitidae | Raniceps raninus | native | Tadpole fish | |
| Tetraodontiformes | Molidae | Ranzania laevis | native | Slender sunfish | |
| Pleuronectiformes | Pleuronectidae | Reinhardtius hippoglossoides | native | Greenland halibut | |
| Chimaeriformes | Rhinochimaeridae | Rhinochimaera atlantica | native | Straightnose rabbitfish | |
| Alepocephaliformes | Alepocephalidae | Rinoctes nasutus | native | Abyssal smooth-head | |
| Rajiformes | Rajidae | Rostroraja alba | native | White skate | |
| Alepocephaliformes | Alepocephalidae | Rouleina attrita | native | Softskin smooth-head | |
| Scombriformes | Gempylidae | Ruvettus pretiosus | native | Oilfish | |
| Saccopharyngiformes | Saccopharyngidae | Saccopharynx ampullaceus | native | Gulper eel | |
| Alepocephaliformes | Platytroctidae | Sagamichthys schnakenbecki | native | Schnakenbeck's searsid | |
| Salmoniformes | Salmonidae | Salmo salar | native | Atlantic salmon | Bradan |
| Salmoniformes | Salmonidae | Salmo trutta | native | Sea trout | Breac geal |
| Scombriformes | Scombridae | Sarda sarda | native | Atlantic bonito | |
| Clupeiformes | Alosidae | Sardina pilchardus | native | European pilchard | An pilséar |
| Scombriformes | Centrolophidae | Schedophilus medusophagus | native | Cornish blackfish | |
| Scombriformes | Centrolophidae | Schedophilus ovalis | native | Imperial blackfish | |
| Ophidiiformes | Bythitidae | Sciadonus pedicellaris | native | ||
| Scombriformes | Scombridae | Scomber scombrus | native | Atlantic mackerel | An ronnach |
| Beloniformes | Scomberesocidae | Scomberesox saurus | native | Atlantic saury | |
| Beryciformes | Melamphaidae | Scopelogadus beanii | native | Bean's bigscale | |
| Aulopiformes | Notosudidae | Scopelosaurus lepidus | native | Blackfin waryfish | |
| Pleuronectiformes | Scophthalmidae | Scophthalmus maximus | native | Turbot | An turbard |
| Pleuronectiformes | Scophthalmidae | Scophthalmus rhombus | native | Brill | |
| Carcharhiniformes | Scyliorhinidae | Scyliorhinus canicula | native | Lesser spotted dogfish | An fíogach beag |
| Carcharhiniformes | Scyliorhinidae | Scyliorhinus stellaris | native | Nursehound | |
| Squaliformes | Somniosidae | Scymnodon ringens | native | Knifetooth dogfish | |
| Alepocephaliformes | Platytroctidae | Searsia koefoedi | native | Koefoed's searsid | |
| Perciformes/Scorpaenoidei | Sebastidae | Sebastes viviparus | native | Norway redfish | |
| Stomiiformes | Gonostomatidae | Sigmops bathyphilus | native | Spark anglemouth | |
| Stomiiformes | Gonostomatidae | Sigmops elongatus | native | Elongated bristlemouth fish | |
| Pleuronectiformes | Soleidae | Solea solea | native | Common sole | An sól dubh |
| Squaliformes | Somniosidae | Somniosus microcephalus | native | Greenland shark | |
| Eupercaria/misc | Sparidae | Sparus aurata | native | Gilthead seabream | |
| Ophidiiformes | Ophidiidae | Spectrunculus grandis | native | Pudgy cuskeel | |
| Tetraodontiformes | Tetraodontidae | Sphoeroides pachygaster | native | Blunthead puffer | |
| Carcharhiniformes | Sphyrnidae | Sphyrna zygaena | native | Smooth hammerhead | |
| Perciformes/Gasterosteoidei | Gasterosteidae | Spinachia spinachia | native | Sea stickleback | Garmachán farraige |
| Eupercaria/misc | Sparidae | Spondyliosoma cantharus | native | Black seabream | |
| Clupeiformes | Clupeidae | Sprattus sprattus | native | European sprat | |
| Squaliformes | Squalidae | Squalus acanthias | native | Picked dogfish | An fiogach gobach |
| Squatiniformes | Squatinidae | Squatina squatina | native | Angelshark | An bráthair |
| Stomiiformes | Sternoptychidae | Sternoptyx diaphana | native | Diaphanous hatchet fish | |
| Stomiiformes | Stomiidae | Stomias ferox | native | ||
| Aulopiformes | Paralepididae | Sudis hyalina | native | ||
| Myctophiformes | Myctophidae | Symbolophorus veranyi | native | Large-scale lantern fish | |
| Eupercaria/misc | Labridae | Symphodus bailloni | native | Baillon's wrasse | An scadán garabh |
| Eupercaria/misc | Labridae | Symphodus melops | native | Corkwing wrasse | |
| Anguilliformes | Synaphobranchidae | Synaphobranchus kaupii | native | Kaup's arrowtooth eel | |
| Syngnathiformes | Syngnathidae | Syngnathus acus | native | Greater pipefish | Snáthaid mhara mhór |
| Syngnathiformes | Syngnathidae | Syngnathus rostellatus | native | Nilsson's pipefish | |
| Syngnathiformes | Syngnathidae | Syngnathus typhle | native | Broadnosed pipefish | |
| Scombriformes | Bramidae | Taractichthys longipinnis | native | Big-scale pomfret | |
| Perciformes/Cottoidei | Cottidae | Taurulus bubalis | native | Longspined bullhead | Longspined sea-scorpion |
| Torpediniformes | Torpedinidae | Tetronarce nobiliana | native | Electric ray | |
| Ophidiiformes | Bythitidae | Thalassobathia pelagica | native | ||
| Gobiiformes | Gobiidae | Thorogobius ephippiatus | native | Leopard-spotted goby | |
| Scombriformes | Scombridae | Thunnus alalunga | native | Albacore | |
| Scombriformes | Scombridae | Thunnus thynnus | native | Atlantic bluefin tuna | An tuinnín |
| Torpediniformes | Torpedinidae | Torpedo marmorata | native | Marbled electric ray | |
| Carangiformes | Carangidae | Trachinotus ovatus | native | Pompano | |
| Perciformes/Percoidei | Trachinidae | Trachinus draco | native | Greater weever | |
| Lampriformes | Trachipteridae | Trachipterus arcticus | native | Dealfish | |
| Carangiformes | Carangidae | Trachurus trachurus | native | Atlantic horse mackerel | An bolmán |
| Gadiformes | Trachyrincidae | Trachyrincus murrayi | native | Roughnose grenadier | |
| Gadiformes | Trachyrincidae | Trachyrincus scabrus | native | Roughsnout grenadier | |
| Perciformes/Scorpaenoidei | Sebastidae | Trachyscorpia echinata | native | Spiny scorpionfish | |
| Scombriformes | Trichiuridae | Trichiurus lepturus | native | Largehead hairtail | |
| Perciformes/Scorpaenoidei | Triglidae | Trigla lyra | native | Piper gurnard | |
| Stomiiformes | Stomiidae | Trigonolampa miriceps | native | Threelight dragonfish | |
| Gadiformes | Gadidae | Trisopterus esmarkii | native | Norway pout | |
| Gadiformes | Gadidae | Trisopterus luscus | native | Pouting | |
| Gadiformes | Gadidae | Trisopterus minutus | native | Poor cod | |
| Perciformes/Uranoscopoidei | Uranoscopidae | Uranoscopus scaber | native | Stargazer | |
| Stomiiformes | Sternoptychidae | Valenciennellus tripunctulatus | native | Constellationfish | |
| Anguilliformes | Nettastomatidae | Venefica proboscidea | native | Whipsnout sorcerer | |
| Alepocephaliformes | Alepocephalidae | Xenodermichthys copei | native | Bluntsnout smooth-head | |
| Carangiformes | Xiphiidae | Xiphias gladius | native | Swordfish | An colgán |
| Squaliformes | Somniosidae | Zameus squamulosus | native | Velvet dogfish | |
| Stomiiformes | Gonostomatidae | Zaphotias pedaliotus | native | Longray fangjaw | |
| Pleuronectiformes | Scophthalmidae | Zeugopterus norvegicus | native | Norwegian topknot | |
| Pleuronectiformes | Scophthalmidae | Zeugopterus punctatus | native | Topknot | Common topknot |
| Pleuronectiformes | Scophthalmidae | Zeugopterus regius | native | Eckström's topknot | |
| Zeiformes | Zeidae | Zeus faber | native | John dory | An deoraí |
| Perciformes/Zoarcoidei | Zoarcidae | Zoarces viviparus | native | Eelpout | An phuteascann |