| Order | Family | Species | Status | FB name | Name |
| Cypriniformes | Cyprinidae | Achondrostoma arcasii | native | ||
| Cypriniformes | Cyprinidae | Achondrostoma salmantinum | native | Sarda | |
| Acipenseriformes | Acipenseridae | Acipenser baerii baerii | introduced | Siberian sturgeon | Esturión de Siberia |
| Acipenseriformes | Acipenseridae | Acipenser naccarii | questionable | Adriatic sturgeon | Esturión del Adriático |
| Acipenseriformes | Acipenseridae | Acipenser sturio | native | Sturgeon | Esturión común |
| Cypriniformes | Cyprinidae | Alburnus alburnus | introduced | Bleak | Alburno |
| Clupeiformes | Clupeidae | Alosa alosa | native | Allis shad | Sabalo |
| Clupeiformes | Clupeidae | Alosa fallax | native | Twaite shad | Alosa |
| Siluriformes | Ictaluridae | Ameiurus melas | introduced | Black bullhead | Bagre torito negro |
| Siluriformes | Ictaluridae | Ameiurus nebulosus | introduced | Brown bullhead | |
| Cypriniformes | Cyprinidae | Anaecypris hispanica | native | Jarabugo | |
| Anguilliformes | Anguillidae | Anguilla anguilla | native | European eel | Anguila |
| Cyprinodontiformes | Cyprinodontidae | Aphanius baeticus | native | ||
| Cyprinodontiformes | Cyprinodontidae | Aphanius iberus | native | Spanish toothcarp | Fartet |
| Atheriniformes | Atherinidae | Atherina boyeri | native | Big-scale sand smelt | Joell |
| Perciformes | Cichlidae | Australoheros facetus | introduced | Chameleon cichlid | |
| Cypriniformes | Balitoridae | Barbatula barbatula | native | Stone loach | Gobio de río |
| Cypriniformes | Cyprinidae | Barbus bocagei | native | Barbo común | |
| Cypriniformes | Cyprinidae | Barbus comizo | native | Iberian barbel | Barbo comizo |
| Cypriniformes | Cyprinidae | Barbus graellsii | endemic | Barbo de Graells | |
| Cypriniformes | Cyprinidae | Barbus guiraonis | endemic | Barbo levante | |
| Cypriniformes | Cyprinidae | Barbus haasi | endemic | ||
| Cypriniformes | Cyprinidae | Barbus meridionalis | native | Mediterranean barbel | Barbo de montaña |
| Cypriniformes | Cyprinidae | Barbus microcephalus | native | ||
| Cypriniformes | Cyprinidae | Barbus sclateri | native | Barbo gitano | |
| Cypriniformes | Cyprinidae | Blicca bjoerkna | introduced | White bream | Brema blanca |
| Cypriniformes | Cyprinidae | Carassius auratus auratus | introduced | Goldfish | Pez rojo |
| Cypriniformes | Cyprinidae | Carassius carassius | native | Crucian carp | Carpín |
| Mugiliformes | Mugilidae | Chelon labrosus | native | Thicklip grey mullet | Muble |
| Cypriniformes | Cyprinidae | Chondrostoma arrigonis | native | ||
| Cypriniformes | Cyprinidae | Chondrostoma duriense | native | ||
| Cypriniformes | Cyprinidae | Chondrostoma miegii | native | ||
| Cypriniformes | Cyprinidae | Chondrostoma oretanum | native | ||
| Cypriniformes | Cyprinidae | Chondrostoma polylepis | native | Iberian nase | Boga de río |
| Cypriniformes | Cyprinidae | Chondrostoma toxostoma | native | Madrilla | |
| Cypriniformes | Cyprinidae | Chondrostoma turiense | endemic | ||
| Cypriniformes | Cyprinidae | Chondrostoma willkommii | native | ||
| Cypriniformes | Cobitidae | Cobitis calderoni | native | Lamprehuela | |
| Cypriniformes | Cobitidae | Cobitis maroccana | questionable | ||
| Cypriniformes | Cobitidae | Cobitis paludica | native | Colmilleja | |
| Cypriniformes | Cobitidae | Cobitis taenia | native | Spined loach | Colmilleja |
| Cypriniformes | Cobitidae | Cobitis vettonica | native | ||
| Scorpaeniformes | Cottidae | Cottus aturi | native | ||
| Scorpaeniformes | Cottidae | Cottus gobio | native | Bullhead | Cavilat |
| Scorpaeniformes | Cottidae | Cottus hispaniolensis | native | ||
| Cypriniformes | Cyprinidae | Cyprinus carpio carpio | introduced | Common carp | Carpa |
| Perciformes | Moronidae | Dicentrarchus labrax | native | European seabass | Robaliza |
| Esociformes | Esocidae | Esox lucius | introduced | Northern pike | Lucio |
| Cyprinodontiformes | Fundulidae | Fundulus heteroclitus heteroclitus | introduced | Mummichog | Fúndulo |
| Cyprinodontiformes | Poeciliidae | Gambusia affinis | introduced | Mosquitofish | Gambusino |
| Cyprinodontiformes | Poeciliidae | Gambusia holbrooki | introduced | Eastern mosquitofish | |
| Gasterosteiformes | Gasterosteidae | Gasterosteus aculeatus aculeatus | native | Three-spined stickleback | Espinosillo |
| Cypriniformes | Cyprinidae | Gobio gobio gobio | introduced | Gudgeon | Gobio |
| Cypriniformes | Cyprinidae | Gobio lozanoi | native | ||
| Perciformes | Gobiidae | Gobius paganellus | native | Rock goby | Bobi |
| Salmoniformes | Salmonidae | Hucho hucho | introduced | Huchen | Salmón del Danubio |
| Cypriniformes | Cyprinidae | Iberochondrostoma lemmingii | native | Pardilla | |
| Siluriformes | Ictaluridae | Ictalurus punctatus | introduced | Channel catfish | Bagre de canal |
| Petromyzontiformes | Petromyzontidae | Lampetra fluviatilis | native | European river lamprey | Lamprea de río |
| Petromyzontiformes | Petromyzontidae | Lampetra planeri | questionable | European brook lamprey | Lamprea de arroyo |
| Perciformes | Centrarchidae | Lepomis gibbosus | introduced | Pumpkinseed | |
| Mugiliformes | Mugilidae | Liza aurata | native | Golden grey mullet | Mule |
| Mugiliformes | Mugilidae | Liza ramado | native | Thinlip mullet | Mule |
| Mugiliformes | Mugilidae | Liza saliens | native | Leaping mullet | Galúa blanca |
| Elopiformes | Megalopidae | Megalops atlanticus | native | Tarpon | Pez lagarto |
| Perciformes | Centrarchidae | Micropterus salmoides | introduced | Largemouth bass | Perca americana |
| Cypriniformes | Cobitidae | Misgurnus fossilis | introduced | Weatherfish | Misgurno |
| Mugiliformes | Mugilidae | Mugil cephalus | native | Flathead mullet | Mule |
| Salmoniformes | Salmonidae | Oncorhynchus mykiss | introduced | Rainbow trout | Salmones del Pacífico |
| Perciformes | Percidae | Perca fluviatilis | introduced | European perch | Perca europea |
| Petromyzontiformes | Petromyzontidae | Petromyzon marinus | native | Sea lamprey | Lamprea |
| Cypriniformes | Cyprinidae | Phoxinus bigerri | native | ||
| Cypriniformes | Cyprinidae | Phoxinus phoxinus | native | Eurasian minnow | Pescardo |
| Pleuronectiformes | Pleuronectidae | Platichthys flesus | native | Flounder | Platixa |
| Cypriniformes | Cyprinidae | Rutilus rutilus | introduced | Roach | Rutilo |
| Perciformes | Blenniidae | Salaria fluviatilis | native | Freshwater blenny | |
| Salmoniformes | Salmonidae | Salmo salar | native | Atlantic salmon | Salmón |
| Salmoniformes | Salmonidae | Salmo trutta trutta | native | Sea trout | Trucha común |
| Salmoniformes | Salmonidae | Salvelinus alpinus alpinus | native | Charr | Salvelino |
| Salmoniformes | Salmonidae | Salvelinus fontinalis | introduced | Brook trout | Salvelino |
| Perciformes | Percidae | Sander lucioperca | introduced | Pike-perch | Lucioperca |
| Cypriniformes | Cyprinidae | Scardinius erythrophthalmus | introduced | Rudd | Gardí |
| Siluriformes | Siluridae | Silurus glanis | introduced | Wels catfish | Siluro |
| Cypriniformes | Cyprinidae | Squalius alburnoides | native | Calandino | |
| Cypriniformes | Cyprinidae | Squalius carolitertii | native | Bordallo | Bordallo |
| Cypriniformes | Cyprinidae | Squalius castellanus | native | ||
| Cypriniformes | Cyprinidae | Squalius cephalus | native | European Chub | Cacho |
| Cypriniformes | Cyprinidae | Squalius laietanus | native | ||
| Cypriniformes | Cyprinidae | Squalius malacitanus | native | ||
| Cypriniformes | Cyprinidae | Squalius palaciosi | endemic | ||
| Cypriniformes | Cyprinidae | Squalius pyrenaicus | native | Cacho | |
| Cypriniformes | Cyprinidae | Squalius valentinus | native | Levantine bagra | |
| Syngnathiformes | Syngnathidae | Syngnathus abaster | native | Black-striped pipefish | Agulleta de riu |
| Cypriniformes | Cyprinidae | Tinca tinca | native | Tench | Tenca |
| Cypriniformes | Balitoridae | Triplophysa coniptera | native | ||
| Cyprinodontiformes | Valenciidae | Valencia hispanica | native | Valencia toothcarp | Samarugo |