Rhestr o enwau Cymraeg, gwyddonol a Saesneg am rywogaethau o bysgod môr.
List of Welsh, Scientific and English species names of fish.
| Cymraeg | Scientific Name | English | 
| Herlyn/herlod | Alosa alosa | Allis shad | 
| Cythraul môr | Lophius piscatorius | Angler fish | 
| Llyfrothen yr Arctig | Arctic blenny | |
| Gwrachen fraith/Cleiriach(-od) | Labrus berggylta | Ballen wrasse | 
| Barfogyn | Barbel | |
| Draenog y môr | Dicentrarchus labrax | Bass | 
| Codyn llwyd? | Trisopterus luscus | Bib | 
| Bawd/bodiau’r melinydd | Gadus luscus | Bib pout | 
| Gwyniad du | Gobius niger | Black goby | 
| Gwrachen/merfog ddu | Spodyliosoma cantharus | Black seabream | 
| Llyfrothen benddu’r Gogledd | Black-faced blenny | |
| Cathfôr felen | Raja brachyura | Blonde ray | 
| Tiwna asgell lâs | Thunnus thynnus | Bluefin tuna | 
| Dolffin trwynbwl/trwyn potel | Tursiops truncatus | Bottlenose dolphin | 
| Bril/lleden fannog | Scophthalmus rhombus | Brill | 
| Pibell fôr drwynllydan | Syngnathus typhle | Broad-nosed pipefish | 
| Llyfrothen,llothan/llothanan,llythod | Pholis gunnellus | Butterfish | 
| Penfras | Gadus morhua | Cod | 
| Merfog Couch | Sparus pagrus | Couch’s seabream | 
| Crystallogobius linearis | Crystal goby | |
| Cathfôr lygadog | Raja naevus | Cuckoo ray | 
| Gwrachen resog, howlas (-leision) | Labrus mixtus | Cuckoo wrasse | 
| Lleden dywod | Limanda limanda | Dab | 
| Mursen fôr | Damselfish | |
| Bwgan dŵr/pysgodyn bwyell | Callionymus lyra | Dragonet | 
| Gweflogyn | Zoarces viviparus | Eelpout | 
| Gweflogyn Esmark | Lycodes esmarkii | Esmark’s eelpout | 
| Llyffant/llyffaint môr | Myoxocephalus scorpius | Father lasher | 
| Silodyn,silod y môr,crothell fôr | Spinachia spinachia | Fifteen-spined stickleback, Sea stickleback | 
| Brithyll Mair pumbarf | Ciliata mustela | Five-bearded rockling | 
| Lleden ddu, lleden fwd, lleden y llaid | Platichthys flesus | Flounder | 
| Brithyll Mair pedair barf | Rhinonemus cimbrius | Four-bearded rockling | 
| Môr nodwydd, carrai careiau môr fôr, llysywen hir | Belone belone | Garfish | 
| Gwrachen werdd | Ctenolabrus rupestris | Gold sinney wrasse | 
| Mingrwn/Hyrddyn aur | Liza auratus | Golden mullet | 
| Pib-bysgodyn hir/môr, nodwydd/pibell fôr mawr | Syngnathus acus | Great pipefish | 
| Cimôr/Môrgi mawr, morgi ysgarmes, morgi brych | Scyliorhinus stellaris | Great spotted dogfish | 
| Llymrïen fawr | Hyperoplus lanceolatus | Greater sandeel | 
| Pysgodyn bwyell, môr-wiber fawr, pryf traeth mawr | Trachinus draco | Greater weever | 
| Chwyrnwr llwyd | Eutrigla gurnardus | Grey gurnard | 
| Chwyrnwr/penhaearn | Gurnard | |
| Corbenfras/Hadog | Melanogrammus aeglefinus | Haddock | 
| Cegddu | Merluccius merluccius | Hake | 
| Lleden fôr | Hippoglossus hippoglossus | Halibut | 
| Ysgadenyn/Pennog | Clupea harengus | Herring | 
| Gweflogyn | Zoarces viviparus | Horned pout | 
| Marchfacrell | Trachurus trachurus | Horse mackerel | 
| Branwes(-au),Eurgefn(au),Pysgodyn darn arian | Zeus faber | John Dory | 
| Lleden lefn | Microstomus kitt | Lemon sole | 
| Pibell fôr fach | Syngnathus rostellatus | Lesser pipefish | 
| Ci/cŵn môr, Penci/pencwn | Scyliorhinus stellaris | Lesser spotted dogfish | 
| Pysgodyn bwyell, môr-wiber(-od) bach, pryf(-ed) traeth bach (bychain) | Trachinus ripera | Lesser weever | 
| Honos/Brenhinbysg | Molva molva | Ling | 
| Lleden gennog | Hippoglossoides platessoides | Long rough dab | 
| Cathfôr drwynfain | Raja oxyrhincus | Long-nosed skate | 
| Iar fôr, pysgodyn clytsiwr, Twm lwmp | Cyclopterus lumpus | Lumpsucker | 
| Macrell | Scomber scombrus | Mackerel | 
| Lleden Fair | Lepidorhombus spp. | Megrim | 
| Llyffant môr | Squatina squatina | Monkfish | 
| Mingrwn/hyrddyn | Mullet | |
| Pibell fôr Nilsson | Syngnathus rostellatus nilsson | Nilsson’s pipefish | 
| Swtan Norwy | Gadus esmarkï | Norway pout | 
| Lleden benclwm Norwy | Phrynorhombus norvegicus | Norwegian topknot | 
| Pomatoschistus pictus | Painted goby | |
| Pib-bysgodyn, pibell-bysgodyn, pibell fôr, môr-nodwydd | Syngnathus spp. | Pipefish | 
| Lleden smotiau coch | Pleuronectes platessa | Plaice | 
| Bawd y melinydd, penbwlan(-od), penlletwad(-au), penbwl môr | Agonus cataphractus | Pogge | 
| Pysgodyn gwyn | Pollachius pollachius | Pollack | 
| Lwdliad/lwdliaid | Trisopterus luscus | Pout | 
| Trisopterus minutus | Poor cod | |
| Gwrachen seithliw | Coris julius | Rainbow wrasse | 
| Chwyrnwr coch | Aspitrigla cuculus | Red gurnard | 
| Hyrddyn/Mingrwn coch | Mullus surmuletus | Red mullet | 
| Merfog coch | Pagellus bogaraveo | Red seabream | 
| Gwrachen goch | Labrus ossiphagus | Red wrasse | 
| Dolffin llwyd | Grampus griseus | Risso’s dolphin | 
| Bolmelyn,Gwrachen y graig | Centrolabrus exoletus | Rock cook | 
| Gwyniad y cerrig | Rock goby | |
| Morlas/Celog | Pollachius virens | Saithe/Coalfish | 
| Gobius minatus | Sand goby | |
| Llymrïen (fach) | Ammodytes tobianus | Sandeel | 
| Gweflogyn Sars | Lycenchelys sarsii | Sar’s eelpout | 
| Sardin | Sardina pilchardus | Sardine | 
| Sgiper (-iaid) | Scombersox saurus | Saury/skipper | 
| Lleden chwith fach | Arnoglossus laterna | Scaldfish | 
| Gwrachen gennog | Acantholabrus palloni | Scale rayed wrasse | 
| Tautulus bubalis | Sea scorpion | |
| Crothell/crethyll, Nyrs wen ♀ Doctor coch ♂ | Spinachia spinachia | Sea stickleback | 
| Gwangen (-od) | Alosa fallax | Shad & Twaite shad | 
| Siani/llyfrothen | Blennius pholis | Shanny/blenny | 
| Cathfôr | Raja bratis | Skate | 
| Gwyniad llonydd | Sleeper goby | |
| Lleden iraidd | Pleuronectes microcephalus | Smear dab | 
| Morfrithyll/brwyniad | Atherina presbyter | Smelt | 
| Ci môr llyfn | Mustelus mustelus | Smooth hound | 
| Llymrïen lefn/llymrïod llyfn | Gymnammodytes semisquamatus | Smooth sandeel | 
| Llyfrothen fain | Lumpenus lampretaeformis | Snake blenny | 
| Pib-bysgodyn byr, pibell fôr | Nerophis aequoris | Snake pipefish | 
| Lleden chwithig | Solea solea | Sole | 
| Y lleden leiaf, Lleden felen fach | Buglossidium luteum | Solenette | 
| Merfog Sbaen | Pagellus acarne | Spanish seabream | 
| Morflaidd/Blaidd y môr | Anarhichas lupus | Spotted catfish | 
| Bwgan brith | Callionymus maculatus | Spotted dragonet | 
| Gwyniad brych | Spotted goby | |
| Corbennog/môr-grothell | Sprattus sprattus | Sprat | 
| Picwd/picydiaid | Squalus acanthias | Spurdog | 
| Morgath ddu/Cathfôf ddu | Dasyalis pastinaca | Sting ray | 
| Pibell fôr drwynsyth | Nerophis ophidion | Straight-nosed pipefish | 
| Pysgodyn yr haul, heul bysgodyn | Mola mola | Sunfish | 
| Cledd bysgodyn | Xiphias gladius | Swordfish | 
| Penbwl môr | Raniceps raninus | Tadpole-fish | 
| Crothell ddeg pigyn | Pungitius pungitius | Ten-spined stickleback | 
| Mingrwn/Hyrddyn gweflog | Cernimugil labrosus | Thick-lipped mullet | 
| Mingrwn/Hyrddyn brych/minfain | Liza ramada | Thin-lipped mullet | 
| Cathfôr bigog | Raja clavata | Thornback ray | 
| Brithyll Mair tair barf | Gaidropsarus vulgaris | Three-bearded rockling | 
| Crothell dri phigyn (crethyll) | Gasterosteus aculeatus | Three-spined stickleback | 
| Tompot/tompotiaid | Tompot blenny | |
| Lleden benclwm | Zeugopterus punctatus | Topknot | 
| Aphia minuta | Transparent goby | |
| Ysgyfarnog môr | Trigla lucerna/hirundo? | Tub gurnard | 
| Torbwt | Scophthalmus maximus | Turbot | 
| Chaparrudo flavescens | Two spot goby | |
| Gweflogyn Vahl | Lycodes vahli | Vahl’s eelpout | 
| Gwyniad y môr | Merlangius merlangus | Whiting | 
| Lleden witsian | Glyptocephalus cynoglossus | Witch | 
| Morflaidd/Blaidd y môr | Anarhichas lupus | Wolf-fish | 
| Y bibell fôr leiaf | Nerophis lumbriciformis | Worm pipefish | 
| Gwrachen | Labrus maculatus | Wrasse | 
| Pysgodyn broc môr | Polyprion americanus | Wreckfish | 
| Llyfrothen Yarrell | Chirolophis ascanii | Yarrell’s blenny | 
| Gwrachen Fair | Coris rupestris | Yellow wrasse | 
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