Rhestr pysgod, molysgiaid, cramenogion ayyb.

Pysgod a molysgiaid, cramenogion ayyb. yn nhrefn yr wyddor.

Pysgod

• Brithyll, -iaid (Trout)
  • Brithyll y môr (Sea trout: Salmo trutta trutta)
• Cegddu (European hake: Merluccius merluccius)
• Celog (Pollock: Pollachius virens)
• Ci pigog (Spiny Dogfish: Squalus acanthias)
• Corbennog (European sprat: Sprattus sprattus)
• Draenogyn neu draenogiad (Perch: Perca)
  • Draenog y môr, draenogiaid y môr (Bass: Dicentrarchus labrax)
• Eog, -iaid (Salmon: Salmonidae)
• Gwangen (Twaite shad: Alosa fallax)
• Gwyniad (Coregonus lavaretus)
  • Gwyniad môr (Whiting/Wittling: Merlangius merlangus)
• Gypi (Guppy: Poecilia reticulata)
• Hadog (Haddock: Melanogrammus aeglefinus)
• Herlyn (Allis shad: Alosa alosa)
• Heulgi (Basking shark: Cetorhinus maximus)
• Honos (Ling: Molva molva)
• Iâr fôr (Lumpsucker: Cyclopterus lumpus)
• Lamprai, lampreiod (Lamprey)
• Lleden
  • Lleden fair (Common megrim: Lepidorhombus whiffiagonis)
  • Lleden fwd (Flounder: Platichthys flesus neu Platichthys stellatus)
  • Lleden goch (Plaice: Pleuronectes platessa)
  • Lleden lefn (Sole: Solea vulgaris)
  • Lleden y laid (Dab: Limanda limanda)
• Llysywen (Eel: Anguilliformes, Anguilla anguilla)
• Macrell (Mackerel: Scomber)
• Marchfacrell (Mackerel: Trachurus)
• Mingryniad (Mullet: Muglidae)
• Mingryniad coch (Goatfish: Mullidae)
• Morgath (Common skate: Raja batis)
• Morgi, morgwn (Shark)
• Morlas (Pollack: Pollachius pollachius)
• Mornodwydd (Needlefish: Belonidae)
• Penfras (Cod: Gadus morhua)
• Penhwyad (pike: Esox lucius)
• Pennog, penwaig (Herring: Clupea harengus)
• Safngrwn (Hagfish: Myxine glutinosa)
• Sardîn (Sardine: Sardina pilchardus)

Molysgiaid, cramenogion ayyb.

• Cimwch, cimychiaid (Lobster: Nephropidae)
  • Cimwch crafangau gwyn dŵr croyw (White-clawed crayfish: Austropotamobius pallipes)
• Cocysen, cocos (Cockle: Cardiidae)
• Corgimwch, (Prawns: Suborder: Dendrobranchiata")
• Cragen, cregyn (Shell)
  • Cragen adain (Fan mussel: Atrina fragilis)
  • Cragen crib (Topshell: Gibbula)
  • Cragen glas (Mussle)
  • Cragen llong (Barnacle: Cirripedia)
  • Cragen moch (Common Whelk: Buccinum undatum)
• Cranc, -od (Crab)
• Cwrel (Solitary coral: Caryophyllia inornata)
• Cyllell y môr, cyllyll y môr (Razorshell: Ensis Arcuatus)
• Deudroediad -iaid (Amphipod: Amphipoda)
• Gele feddyginiathol (Medicinal leech: Hirudo medicinalis)
• Gwichiad, -iaid (Periwinkle)
  • Gwichiad moch (Whelk)
• Llygad meheryn, llygaid meheryn (Limpet)
• Llymarchen wystrysen (Oyster: Ostrea edulis)
• Malwen (Snail)
  • Malwen droellog (Narrow-mouth whorl snail: Vertigo angustior neu Geyeri's whorl snail: Vertigo geyeri)
  • Malwen droellog Desmoulin (Desmoulin's whorl snail: Vertigo moulinsiana)
  • malwen lysnafeddog (Glutinous snail: Myxas glutinosa)
• Misglen (Freshwater pea mussel: Pisidium tenuilineatum)
  • Misglen berlog yr afon (Freshwater pearl mussel: Margaritifera margaritifera)
  • Misglen yr afon (Depressed river mussel: Pseudanodonta complanata)
• Môr-wyntyll pinc (Pink sea fan: Eunicella verrucosa)
• Perdysen (Shrimp: Infraorder: Caridea)
• Seren môr, sêr môr (Starfish: Asteroidea)
  • Seren môr clustog (Cushioned starfish: Asterina phylactica)
• Sgalop (Scallop: teulu; Pectinidae)
• Wystrysen (Oyster: Ostrea edulis)