![](https://resourcespace.naturalis.nl/filestore/8/4/3/1/5_30e8b5f120de874/84315_3c620301ad4efa4.jpg?v=2016-06-17+13%3A59%3A04)
5a. Snout with prominent barbels. Nasal opening at tip of mouth. Mouth not formed as funnel or disc. A single pair of external gill openings remote from head. Dorsal fin reduced, not separate from caudal fin – Family Myxinidae.
Step 6. Family Myxinidae
5b. Snout without barbels. Nasal opening on upper side of head. Mouth formed as funnel or sucking disc. Seven pairs of external gill openings close to head. Dorsal fins well developed, separate from caudal fin – Family Petromyzonidae.
Step 7. Family Petromyzonidae
5 possible taxa remaining show scientific names show common names
1275 taxa excluded
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- Abudefduf luridus
- Acanthochaenus lutkeni
- Acanthocybium solandri
- Acantholabrus palloni
- Acanthostracion notacanthus
- Acanthurus monroviae
- Acipenser gueldenstaedti
- Acipenser naccarii
- Acipenser nudiventris
- Acipenser stellatus
- Acipenser sturio
- Agonus cataphractus
- Ahliesaurus berryi
- Aidablennius sphynx
- Aldrovandia affinis
- Aldrovandia phalacra
- Alectis alexandrinus
- Alepes djedaba
- Alepisaurus ferox
- Alepocephalus agassizii
- Alepocephalus australis
- Alepocephalus bairdii
- Alepocephalus productus
- Alepocephalus rostratus
- Allocyttus verrucosus
- Alopias superciliosus
- Alopias vulpinus
- Alosa alosa
- Alosa caspia
- Alosa fallax
- Alosa pontica
- Ammodytes marinus
- Ammodytes tobianus
- Anarchias euryurus
- Anarhichas denticulatus
- Anarhichas lupus
- Anarhichas minor
- Anguilla anguilla
- Anisarchus medius
- Anoplogaster cornuta
- Anotopterus pharao
- Antennarius nummifer
- Antennarius radiosus
- Antennarius senegalensis
- Anthias anthias
- Antigonia capros
- Antimora rostrata
- Antonogadus macrophthalmus
- Antonogadus megalokynodon
- Aphanius dispar
- Aphanius fasciatus
- Aphanius iberus
- Aphanopus carbo
- Aphia minuta
- Aphyonus gelatinosus
- Apletodon bacescui
- Apletodon dentatus
- Apletodon pellegrini
- Apogon imberbis
- Apogon taeniatus
- Apristurus laurussonii
- Apristurus maderensis
- Apristurus manis
- Apristurus microps
- Apristurus nasutus
- Apterichthus anguiformis
- Apterichthus caecus
- Arctogadus glacialis
- Argentina silus
- Argentina sphyraena
- Argyripnus atlanticus
- Argyropelecus aculeatus
- Argyropelecus affinis
- Argyropelecus gigas
- Argyropelecus hemigymnus
- Argyropelecus olfersi
- Argyrosomus regius
- Ariosoma balearicum
- Aristostomias grimaldii
- Aristostomias lunifer
- Aristostomias tittmanni
- Arnoglossus imperialis
- Arnoglossus kessleri
- Arnoglossus laterna
- Arnoglossus rueppelli
- Arnoglossus thori
- Artediellus atlanticus
- Artediellus scaber
- Artediellus uncinatus
- Aspitrigla cuculus
- Aspitrigla obscura
- Asquamiceps velaris
- Astronesthes cyclophotus
- Astronesthes gemmifer
- Astronesthes indicus
- Astronesthes leucopogon
- Astronesthes macropogon
- Astronesthes micropogon
- Astronesthes neopogon
- Astronesthes niger
- Ataxolepis apus
- Atherina boyeri
- Atherina hepsetus
- Atherina presbyter
- Atherinomorus lacunosus
- Aulopus filamentosus
- Auxis rochei
- Avocettina infans
- Bajacalifornia calcarata
- Bajacalifornia megalops
- Balistes carolinensis
- Balistes punctatus
- Balistes vetula
- Barathrites iris
- Barathronus multidens
- Barathronus parfaiti
- Barbantus curvifrons
- Bathophilus digitatus
- Bathophilus nigerrimus
- Bathophilus vaillanti
- Bathygadus favosus
- Bathygadus melanobranchus
- Bathylaco nigricans
- Bathylagus bericoides
- Bathylagus euryops
- Bathylagus greyae
- Bathylagus longirostris
- Bathylychnops exilis
- Bathymicrops regis
- Bathyonus laticeps
- Bathyprion danae
- Bathypterois dubius
- Bathypterois grallator
- Bathypterois longipes
- Bathypterois mediterraneus
- Bathypterois phenax
- Bathyraja pallida
- Bathyraja richardsoni
- Bathyraja spinicauda
- Bathysaurus ferox
- Bathysaurus mollis
- Bathysolea profundicola
- Bathytroctes microlepis
- Bathytyphlops sewelli
- Bellocia koefoedi
- Bellocia michaelsarsi
- Bellottia apoda
- Belone belone
- Belone svetovidovi
- Benthalbella infans
- Benthocometes robustus
- Benthodesmus elongatus
- Benthophiloides brauneri
- Benthophilus stellatus
- Benthosema glaciale
- Benthosema suborbitale
- Beryx decadactylus
- Beryx splendens
- Blennius ocellaris
- Bodianus speciosus
- Bolinichthys indicus
- Bolinichthys supralateralis
- Bonapartia pedaliota
- Boops boops
- Boreogadus saida
- Borostomias antarcticus
- Borostomias elucens
- Borostomias mononema
- Bothus podas
- Brachydeuterus auritus
- Brama brama
- Bregmaceros atlanticus
- Breviraja caerulea
- Breviraja sp.
- Brosme brosme
- Brotulotaenia brevicauda
- Brotulotaenia crassa
- Brotulotaenia nigra
- Buenia affinis
- Buenia jeffreysii
- Buglossidium luteum
- Bythites islandicus
- Callanthias ruber
- Callionymus fasciatus
- Callionymus filamentosus
- Callionymus lyra
- Callionymus maculatus
- Callionymus pusillus
- Callionymus reticulatus
- Callionymus risso
- Campogramma glaycos
- Canthigaster rostrata
- Canthigaster sanctaehelenae
- Capros aper
- Caranx crysos
- Caranx hippos
- Caranx latus
- Caranx lugubris
- Caranx rhonchus
- Carapus acus
- Carapus birpex
- Carapus cuspis
- Carcharhinus brevipinna
- Carcharhinus falciformis
- Carcharhinus isodon
- Carcharhinus leucas
- Carcharhinus limbatus
- Carcharhinus longimanus
- Carcharhinus melanopterus
- Carcharhinus obscurus
- Carcharhinus plumbeus
- Carcharhinus signatus
- Carcharodon carcharias
- Careproctus longipinnis
- Careproctus micropus
- Careproctus reinhardti
- Caristius maderensis
- Caspiosoma caspium
- Cataetyx alleni
- Cataetyx laticeps
- Caulophryne jordani
- Caulophryne polynema
- Caulophrynidae
- Centracanthus cirrus
- Centrobranchus nigroocellatus
- Centrodraco acanthopoma
- Centrolabrus exoletus
- Centrolabrus trutta
- Centrolophus niger
- Centrophorus granulosus
- Centrophorus lusitanicus
- Centrophorus squamosus
- Centrophorus uyato
- Centrophryne spinulosa
- Centroscyllium fabricii
- Centroscymnus coelolepis
- Centroscymnus crepidater
- Centroscymnus cryptacanthus
- Cepola rubescens
- Ceratias holboelli
- Ceratoscopelus maderensis
- Ceratoscopelus warmingii
- Cetomimus hempeli
- Cetonurus globiceps
- Cetorhinus maximus
- Cetostoma regani
- Chaenophryne draco
- Chaenophryne longiceps
- Chaetodon hoefleri
- Chaetodon robustus
- Chalinura brevibarbis
- Chalinura leptolepis
- Chalinura mediterranea
- Chalinura profundicola
- Chauliodus danae
- Chauliodus sloani
- Cheilopogon exciliens
- Cheilopogon heterurus
- Cheilopogon pinnatibarbatus
- Chelon labrosus
- Chiasmodon bolangeri
- Chiasmodon niger
- Chilomycterus atringa
- Chimaera monstrosa
- Chirolophis ascanii
- Chirostomias pliopterus
- Chlamydoselachus anguineus
- Chlopsis bicolor
- Chlorophthalmus agassizii
- Chromis chromis
- Chromogobius quadrivittatus
- Chromogobius zebratus
- Ciliata mustela
- Ciliata septentrionalis
- Citharus linguatula
- Clinitrachus argentatus
- Clupea harengus
- Clupeonella cultriventris
- Coccorella atlantica
- Coelorhynchus abditilux
- Coelorhynchus coelorhynchus
- Coelorhynchus occa
- Conger conger
- Conocara fiolenti
- Conocara macroptera
- Conocara microlepis
- Conocara murrayi
- Conocara salmonea
- Conocara werneri
- Corcyrogobius liechtensteini
- Coregonus albula
- Coregonus autumnalis
- Coregonus lavaretus
- Coregonus sardinella
- Coris julis
- Coryphaena equiselis
- Coryphaena hippurus
- Coryphaenoides guentheri
- Coryphaenoides macrocephalus
- Coryphaenoides rupestris
- Coryphaenoides thelestomus
- Coryphaenoides zaniophorus
- Coryphoblennius galerita
- Cottunculus microps
- Cottunculus sadko
- Cottunculus thomsonii
- Cottus gobio
- Cottus poecilopus
- Crenidens crenidens
- Cryptopsaras couesi
- Crystallogobius linearis
- Ctenochirichthys longimanus
- Ctenolabrus rupestris
- Cubiceps gracilis
- Cyclopteropsis macalpini
- Cyclopterus lumpus
- Cyclothone acclinidens
- Cyclothone alba
- Cyclothone braueri
- Cyclothone livida
- Cyclothone microdon
- Cyclothone obscura
- Cyclothone pallida
- Cyclothone pseudopallida
- Cyclothone pygmaea
- Cyema atrum
- Cynoglossus browni
- Cynoglossus sinusarabici
- Cynoponticus ferox
- Cyttopsis roseus
- Dactylopterus volitans
- Dalatias licha
- Dalophis imberbis
- Dasyatis centroura
- Dasyatis pastinaca
- Dasyatis tortonesei
- Dasyatis violacea
- Deania calceus
- Decapterus macarellus
- Decapterus punctatus
- Deltentosteus colonianus
- Deltentosteus quadrimaculatus
- Dentex canariensis
- Dentex dentex
- Dentex gibbosus
- Dentex macrophthalmus
- Dentex maroccanus
- Derichthys serpentinus
- Diaphus adenomus
- Diaphus bertelseni
- Diaphus brachycephalus
- Diaphus dumerilii
- Diaphus effulgens
- Diaphus holti
- Diaphus lucidus
- Diaphus metopoclampus
- Diaphus mollis
- Diaphus rafinesquei
- Diaphus subtilis
- Diaphus thermophilus
- Dicentrarchus labrax
- Dicentrarchus punctatus
- Dicologlossa cuneata
- Didogobius bentuvii
- Diodon hystrix
- Diogenichthys atlanticus
- Diplecogaster bimaculata
- Diplecogaster euxinica
- Diplecogaster pectoralis
- Diplodus annularis
- Diplodus bellottii
- Diplodus cervinus
- Diplodus puntazzo
- Diplodus sargus
- Diplodus vulgaris
- Diplophos maderensis
- Diplophos taenia
- Diplospinus multistriatus
- Diretmoides parini
- Diretmoides pauciradiatus
- Diretmus argenteus
- Ditropichthys storeri
- Dolichopteryx longipes
- Dolopichthys
- Dolopichthys allector
- Dolopichthys danae
- Dolopichthys jubatus
- Dolopichthys longicornis
- Dussumieria acuta
- Dysomma brevirostre
- Echelus myrus
- Echeneis naucrates
- Echiichthys vipera
- Echinomacrurus mollis
- Echinorhinus brucus
- Echiodon dentatus
- Echiodon drummondi
- Echiostoma barbatum
- Einara edentula
- Einara macrolepis
- Elagatis bipinnulata
- Electrona rissoi
- Eleginus navaga
- Enchelycore anatina
- Engraulis encrasicholus
- Entelurus aequoraeus
- Ephippion guttiferum
- Epigonus constanciae
- Epigonus denticulatus
- Epigonus telescopus
- Epinephelus aeneus
- Epinephelus alexandrinus
- Epinephelus caninus
- Epinephelus guaza
- Epinephelus haifensis
- Epinephelus malabaricus
- Erethmophorus kleinenbergi
- Etmopterus princeps
- Etmopterus pusillus
- Etmopterus spinax
- Eugomphodus taurus
- Eumicrotremus derjugini
- Eumicrotremus eggvini
- Eumicrotremus spinosus
- Eurypharynx pelecanoides
- Eustomias braueri
- Eustomias filifer
- Eustomias longibarba
- Eustomias macronema
- Eustomias obscurus
- Eustomias schmidti
- Eustomias simplex
- Eustomias tetranema
- Eutaeniophorus festivus
- Euthynnus alletteratus
- Eutrigla gurnardus
- Evermannella balbo
- Evermannella indica
- Exocoetus obtusirostris
- Exocoetus volitans
- Facciolella oxyrhyncha
- Flagellostomias boureei
- Gadella maraldi
- Gadiculus argenteus
- Gadomus arcuatus
- Gadomus dispar
- Gadomus longifilis
- Gadus morhua
- Gaidropsarus granti
- Gaidropsarus guttatus
- Gaidropsarus mediterraneus
- Gaidropsarus vulgaris
- Galeocerdo cuvieri
- Galeoides decadactylus
- Galeorhinus galeus
- Galeus melastomus
- Galeus murinus
- Gammogobius steinitzi
- Gasterosteus aculeatus
- Gempylus serpens
- Gephyroberyx darwini
- Gigantactis vanhoeffeni
- Ginglymostoma cirratum
- Glossanodon leioglossus
- Glyptocephalus cynoglossus
- Gnathophis codoniphorus
- Gnathophis mystax
- Gobius ater
- Gobius auratus
- Gobius bucchichi
- Gobius cobitis
- Gobius couchi
- Gobius cruentatus
- Gobius fallax
- Gobius gasteveni
- Gobius geniporus
- Gobius luteus
- Gobius niger
- Gobius paganellus
- Gobius roulei
- Gobius strictus
- Gobius vittatus
- Gobiusculus flavescens
- Gonichthys coccoi
- Gonostoma atlanticum
- Gonostoma bathyphilum
- Gonostoma denudatum
- Gonostoma elongatum
- Gouania wildenowi
- Grammatostomias circularis
- Grammatostomias flagellibarba
- Grammicolepis brachiusculus
- Guentherus altivela
- Gymnacanthus tricuspis
- Gymnammodytes cicerelus
- Gymnammodytes semisquamatus
- Gymnelus retrodorsalis
- Gymnelus viridis
- Gymnothorax maderensis
- Gymnothorax polygonius
- Gymnothorax unicolor
- Gymnothorax vicinus
- Gymnura altavela
- Halargyreus johnsonii
- Halobatrachus didactylus
- Halosauropsis macrochir
- Halosaurus johnsonianus
- Halosaurus ovenii
- Haplophryne mollis
- Hariotta raleighana
- Helicolenus dactylopterus
- Hemiramphus far
- Heptranchias perlo
- Herklotsichthys punctatus
- Herwigia kreffti
- Hexanchus griseus
- Hexanchus nakamurai
- Himantolophidae
- Himantolophus albinares
- Himantolophus compressus
- Himantolophus groenlandicus
- Himantolophus mauli
- Himantura uarnak
- Hippocampus hippocampus
- Hippocampus ramulosus
- Hippoglossoides platessoides
- Hippoglossus hippoglossus
- Hirundichthys rondeletii
- Hirundichthys speculiger
- Histiobranchus bathybius
- Histrio histrio
- Holcomycteronus squamosus
- Holtbyrnia anomala
- Holtbyrnia macrops
- Hoplostethus atlanticus
- Hoplostethus cadenati
- Hoplostethus mediterraneus
- Huso huso
- Hydrolagus affinis
- Hydrolagus mirabilis
- Hygophum benoiti
- Hygophum hygomii
- Hygophum reinhardtii
- Hygophum taaningi
- Hymenocephalus gracilis
- Hymenocephalus italicus
- Hyperoglyphe perciformis
- Hyperoplus immaculatus
- Hyperoplus lanceolatus
- Hypleurochilus bananensis
- Hyporhamphus picarti
- Icelus bicornis
- Icelus spatula
- Ichthyococcus ovatus
- Idiacanthus fasciola
- Ijimaia loppei
- Ilyophis blachei
- Ilyophis brunneus
- Istiophorus albicans
- Isurus oxyrinchus
- Isurus paucus
- Kali macrodon
- Kali macrura
- Katsuwonus pelamis
- Knipowitschia caucasica
- Knipowitschia longecaudata
- Knipowitschia panizzae
- Kyphosus incisor
- Kyphosus sectator
- Labrus bergylta
- Labrus bimaculatus
- Labrus merula
- Labrus viridis
- Laemonema latifrons
- Laemonema robustum
- Laemonema yarrellii
- Lagocephalus lagocephalus
- Lagocephalus spadiceus
- Lamna nasus
- Lampadena chavesi
- Lampadena speculigera
- Lampadena uropaos atlantica
- Lampanyctus alatus
- Lampanyctus ater
- Lampanyctus crocodilus
- Lampanyctus cuprarius
- Lampanyctus festivus
- Lampanyctus intricarius
- Lampanyctus lineatus
- Lampanyctus macdonaldi
- Lampanyctus photonotus
- Lampanyctus pusillus
- Lampris guttatus
- Lappanella fasciata
- Lasiognathus beebei
- Lasiognathus saccostoma
- Lebetus guilleti
- Lebetus scorpioides
- Leiognathus klunzingeri
- Lepadogaster candollei
- Lepadogaster lepadogaster
- Lepadogaster purpurea
- Lepadogaster zebrina
- Lepidion eques
- Lepidion guentheri
- Lepidion lepidion
- Lepidion schmidti
- Lepidocybium flavobrunneum
- Lepidophanes gaussi
- Lepidophanes guentheri
- Lepidopus caudatus
- Lepidorhombus boscii
- Lepidorhombus whiffiagonis
- Lepidotrigla cavillone
- Lepidotrigla dieuzeidei
- Leptacanthichthys gracilispinis
- Leptagonus decagonus
- Leptocharias smithii
- Leptochilichthys agassizii
- Leptochilichthys pinguis
- Leptoclinus maculatus
- Leptoderma macrops
- Leptoderma sp.
- Leptostomias gladiator
- Leptostomias haplocaulus
- Leptostomias longibarba
- Lestidiops affinis
- Lestidiops jayakari
- Lestidiops sphyrenoides
- Lesueurigobius friesii
- Lesueurigobius heterofasciatus
- Lesueurigobius sanzoi
- Lesueurigobius suerii
- Leucobrotula adipata
- Lichia amia
- Limanda limanda
- Linophryne brevibarbata
- Linophryne coronata
- Linophryne lucifera
- Linophryne maderensis
- Linophryne polypogon
- Linophryne sexfilis
- Lionurus carapinus
- Liopsetta glacialis
- Liparis fabricii
- Liparis liparis
- Liparis montagui
- Lipophrys adriaticus
- Lipophrys basiliscus
- Lipophrys canevai
- Lipophrys dalmatinus
- Lipophrys nigriceps
- Lipophrys pavo
- Lipophrys pholis
- Lipophrys trigloides
- Lithognathus mormyrus
- Liza aurata
- Liza carinata
- Liza ramada
- Liza saliens
- Lobianchia dofleini
- Lobianchia gemellarii
- Lobotes surinamensis
- Lophius budegassa
- Lophius piscatorius
- Lophodolos acanthognathus
- Lophotus lacepedei
- Loweina interrupta
- Loweina rara
- Lumpenus fabricii
- Lumpenus lampretaeformis
- Luvarus imperialis
- Lycenchelys alba
- Lycenchelys kolthoffi
- Lycenchelys muraena
- Lycenchelys platyrhinus
- Lycenchelys sarsi
- Lycodes adolfi
- Lycodes esmarki
- Lycodes eudipleurostictus
- Lycodes frigidus
- Lycodes jugoricus
- Lycodes lavalei
- Lycodes luetkeni
- Lycodes pallidus
- Lycodes polaris
- Lycodes reticulatus
- Lycodes rossi
- Lycodes sagittarius
- Lycodes seminudus
- Lycodes squamiventer
- Lycodes vahli
- Lycodonus flagellicauda
- Lycodonus ophidium
- Lyconus brachycolus
- Macroparalepis affinis
- Macroparalepis brevis
- Macroparalepis nigra
- Macroramphosus scolopax
- Macrostomias longibarbatus
- Macrourus berglax
- Makaira nigricans
- Malacocephalus laevis
- Malacosteus niger
- Mallotus villosus
- Margrethia obtusirostra
- Masturus lanceolatus
- Mauligobius maderensis
- Maulisia argipalla
- Maulisia mauli
- Maulisia microlepis
- Maurolicus muelleri
- Melamphaes longivelis
- Melamphaes microps
- Melamphaes simus
- Melamphaes suborbitalis
- Melamphaes typhlops
- Melanocetus johnsoni
- Melanocetus murrayi
- Melanogrammus aeglefinus
- Melanonus zugmayeri
- Melanostigma atlanticum
- Melanostomias bartonbeani
- Melanostomias biseriatus
- Melanostomias macrophotus
- Melanostomias melanops
- Melanostomias tentaculatus
- Melanostomias valdiviae
- Merlangius merlangus
- Merluccius merluccius
- Merluccius senegalensis
- Mesogobius batrachocephalus
- Meteoria erythrops
- Micrenophrys lilljeborgi
- Microchirus azevia
- Microchirus boscanion
- Microchirus hexophthalma
- Microchirus ocellatus
- Microchirus variegatus
- Microichthys coccoi
- Microichthys sanzoi
- Microlophichthys microlophus
- Micromesistius poutassou
- Microstoma microstoma
- Microstomus kitt
- Millerigobius macrocephalus
- Minyichthys sentus
- Mirapinna esau
- Mirognathus normani
- Mitsukurina owstoni
- Mobula mobular
- Mola mola
- Molva dipterygia
- Molva molva
- Monishia ochetica
- Monochirus hispidus
- Monognathus bertini
- Monognathus boehlkei
- Monognathus herringi
- Monognathus jesperseni
- Monognathus nigeli
- Monomitopus metriostoma
- Mora moro
- Mugil capurii
- Mugil cephalus
- Mullus barbatus
- Mullus surmuletus
- Muraena helena
- Muraenesox cinereus
- Mustelus asterias
- Mustelus mustelus
- Mustelus punctulatus
- Mycteroperca rubra
- Myctophum nitidulum
- Myctophum punctatum
- Myctophum selenops
- Myliobatis aquila
- Myoxocephalus scorpioides
- Myoxocephalus scorpius
- Nanichthys simulans
- Nansenia groenlandica
- Nansenia oblita
- Narcetes stomias
- Naucrates ductor
- Nealotus tripes
- Negaprion brevirostris
- Nematonurus armatus
- Nemichthys curvirostris
- Nemichthys scolopaceus
- Neocyttus helgae
- Neogobius cephalargoides
- Neogobius eurycephalus
- Neogobius fluviatilis
- Neogobius gymnotrachelus
- Neogobius kessleri
- Neogobius melanostomus
- Neogobius platyrostris
- Neogobius ratan
- Neogobius syrman
- Neonesthes capensis
- Neoscopelus macrolepidotus
- Neoscopelus microchir
- Nerophis lumbriciformis
- Nerophis maculatus
- Nerophis ophidion
- Nesiarchus nasutus
- Nessorhamphus ingolfianus
- Nettastoma melanurum
- Nezumia aequalis
- Nezumia longebarbata
- Nezumia sclerorhynchus
- Nomeus gronovii
- Normichthys operosus
- Notacanthus bonapartei
- Notacanthus chemnitzii
- Notolepis rissoi
- Notolychnus valdiviae
- Notoscopelus bolini
- Notoscopelus caudispinosus
- Notoscopelus elongatus
- Notoscopelus kroeyerii
- Notoscopelus resplendens
- Nybelinella erikssoni
- Oblada melanura
- Odondebuenia balearica
- Odontaspis ferox
- Odontaspis noronhai
- Odontomacrurus murrayi
- Odontostomops normalops
- Oedalechilus labeo
- Oligopus ater
- Omosudis lowei
- Oncorhynchus gorbuscha
- Oncorhynchus keta
- Oncorhynchus kisutch
- Oneirodes anisacanthus
- Oneirodes carlsbergi
- Oneirodes clarkei
- Oneirodes eschrichtii
- Oneirodes macronema
- Oneirodes macrosteus
- Oneirodes myrionemus
- Onogadus argentatus
- Onogadus ensis
- Opeatogenys gracilis
- Ophichthus ophis
- Ophichthus rufus
- Ophidion barbatum
- Ophidion rochei
- Ophisurus serpens
- Opisthoproctus grimaldii
- Opisthoproctus soleatus
- Orcynopsis unicolor
- Osmerus eperlanus
- Osmerus mordax
- Oxynotus centrina
- Oxynotus paradoxus
- Pachycara bulbiceps
- Pachycara crassiceps
- Pachystomias microdon
- Pagellus acarne
- Pagellus bellottii
- Pagellus bogaraveo
- Pagellus erythrinus
- Pagrus auriga
- Pagrus coeruleostictus
- Pagrus pagrus
- Panturichthys fowleri
- Panturichthys mauretanicus
- Parablennius gattorugine
- Parablennius incognitus
- Parablennius parvicornis
- Parablennius pilicornis
- Parablennius rouxi
- Parablennius ruber
- Parablennius sanguinolentus
- Parablennius tentacularis
- Parablennius zvonimiri
- Parabrotula plagiophthalmus
- Paraconger macrops
- Paragaleus pectoralis
- Paralepis atlantica
- Paralepis brevirostris
- Paralepis coregonoides
- Paralepis harryi
- Paralepis speciosa
- Paraliparis bathybius
- Paraliparis edwardsi
- Paraliparis leptochirus
- Paraliparis membranaceus
- Parapristipoma humile
- Parapristipoma octolineatum
- Parataeniophorus gulosus
- Parexocoetus mento
- Parophidion vassali
- Pelates quadrilineatus
- Pentherichthys venustus
- Peristedion cataphractum
- Pholis gunnellus
- Photonectes braueri
- Photonectes dinema
- Photonectes parvimanus
- Photostomias guernei
- Photostylus pycnopterus
- Phrynichthys wedli
- Phrynorhombus norvegicus
- Phrynorhombus regius
- Phtheirichthys lineatus
- Phycis blennoides
- Phycis phycis
- Phyllorhinichthys micractis
- Physiculus dalwigki
- Pisodonophis semicinctus
- Platichthys flesus
- Platybelone argalus
- Platyberyx opalescens
- Platycephalus indicus
- Platytroctegen mirus
- Platytroctes apus
- Plectorhinchus mediterraneus
- Pleuronectes platessa
- Pollachius pollachius
- Pollachius virens
- Pollichthys mauli
- Polyacanthonotus challengeri
- Polyacanthonotus rissoanus
- Polyipnus polli
- Polymetme corythaeola
- Polymixia nobilis
- Polyprion americanus
- Pomadasys incisus
- Pomadasys stridens
- Pomatomus saltator
- Pomatoschistus bathi
- Pomatoschistus canestrinii
- Pomatoschistus knerii
- Pomatoschistus lozanoi
- Pomatoschistus marmoratus
- Pomatoschistus microps
- Pomatoschistus minutus
- Pomatoschistus norvegicus
- Pomatoschistus pictus
- Pomatoschistus quagga
- Pomatoschistus tortonesei
- Pontinus kuhlii
- Poromitra capito
- Poromitra crassiceps
- Poromitra megalops
- Priacanthus arenatus
- Priacanthus cruentatus
- Prionace glauca
- Pristis pectinata
- Pristis pristis
- Prognathodes marcellae
- Promethichthys prometheus
- Proterorhinus marmoratus
- Protogrammus sousai
- Protomyctophum arcticum
- Psenes maculatus
- Psenes pellucidus
- Psetta maxima
- Pseudaphya ferreri
- Pseudocaranx dentex
- Pseudolepidaplois scrofa
- Pseudophichthys splendens
- Pseudoscopelus altipinnis
- Pseudotolithus senegalensis
- Pseudotolithus typus
- Pseudotriakis microdon
- Pseudupeneus prayensis
- Psychrolutes subspinosus
- Pteraclis carolinus
- Pteromylaeus bovinus
- Pterosmaris melanurus
- Pterycombus brama
- Pungitius platygaster
- Pungitius pungitius
- Rachycentron canadum
- Radiicephalus elongatus
- Raja africana
- Raja alba
- Raja asterias
- Raja bathyphila
- Raja batis
- Raja bigelowi
- Raja brachyura
- Raja circularis
- Raja clavata
- Raja fullonica
- Raja fyllae
- Raja hyperborea
- Raja kreffti
- Raja lintea
- Raja maderensis
- Raja melitensis
- Raja microocellata
- Raja miraletus
- Raja montagui
- Raja naevus
- Raja nidarosiensis
- Raja oxyrinchus
- Raja polystigma
- Raja radiata
- Raja radula
- Raja rondeleti
- Raja spinacidermis
- Raja undulata
- Raniceps raninus
- Ranzania laevis
- Rastrelliger kanagurta
- Regalecus glesne
- Reinhardtius hippoglossoides
- Remora australis
- Remora brachyptera
- Remora osteochir
- Remora remora
- Remorina albescens
- Rhadinesthes decimus
- Rhinobates cemiculus
- Rhinobatos rhinobatos
- Rhinochimaera atlantica
- Rhinonemus cimbrius
- Rhinoptera marginata
- Rhizoprionodon acutus
- Rhodichthys regina
- Rhynchogadus hepaticus
- Rhynchohyalus natalensis
- Rinoctes nasutus
- Rondeletia loricata
- Rosenblattichthys hubbsi
- Rouleina attrita
- Rouleina maderensis
- Ruvettus pretiosus
- Saccopharynx ampullaceus
- Saccopharynx harrisoni
- Saccopharynx paucovertebratis
- Saccopharynx ramosus
- Saccopharynx thalassa
- Sagamichthys schnakenbecki
- Salmo salar
- Salmo trutta
- Salvelinus alpinus
- Sarda sarda
- Sardina pilchardus
- Sardinella aurita
- Sardinella maderensis
- Sargocentron hastatus
- Sargocentron rubrum
- Sarpa salpa
- Saurenchelys cancrivora
- Scartella cristata
- Schedophilus medusophagus
- Schedophilus ovalis
- Sciadonus cryptophthalmus
- Sciadonus galatheae
- Sciaena umbra
- Scomber japonicus
- Scomber scombrus
- Scomberesox saurus
- Scomberomorus commerson
- Scomberomorus tritor
- Scombrolabrax heterolepis
- Scopelarchus analis
- Scopelarchus michaelsarsi
- Scopelengys tristis
- Scopeloberyx opisthopterus
- Scopeloberyx robustus
- Scopeloberyx rubrivenster
- Scopelogadus beanii
- Scopelosaurus argenteus
- Scopelosaurus lepidus
- Scopelosaurus smithii
- Scophthalmus rhombus
- Scorpaena azorica
- Scorpaena elongata
- Scorpaena laevis
- Scorpaena loppei
- Scorpaena maderensis
- Scorpaena notata
- Scorpaena porcus
- Scorpaena scrofa
- Scorpaenodes arenai
- Scyliorhinus canicula
- Scyliorhinus stellaris
- Scymnodon obscurus
- Scymnodon ringens
- Searsia koefoedi
- Sebastapistes nuchalis
- Sebastes fasciatus
- Sebastes marinus
- Sebastes mentella
- Sebastes viviparus
- Selar boops
- Selene dorsalis
- Seriola carpenteri
- Seriola dumerili
- Seriola fasciata
- Seriola rivoliana
- Serranus atricauda
- Serranus cabrilla
- Serranus hepatus
- Serranus scriba
- Serrivomer beani
- Serrivomer brevidentatus
- Setarches guentheri
- Siganus luridus
- Siganus rivulatus
- Silhouettea aegyptia
- Sillago sihama
- Simenchelys parasitica
- Solea aegyptiaca
- Solea impar
- Solea kleinii
- Solea lascaris
- Solea nasuta
- Solea senegalensis
- Solea vulgaris
- Somniosus microcephalus
- Somniosus rostratus
- Sparisoma cretense
- Sparus aurata
- Spectrunculus grandis
- Speleogobius trigloides
- Sphagemacrurus grenadae
- Sphagemacrurus hirundo
- Sphoeroides cutaneus
- Sphoeroides spengleri
- Sphyraena chrysotaenia
- Sphyraena sphyraena
- Sphyraena viridensis
- Sphyrna lewini
- Sphyrna mokarran
- Sphyrna tudes
- Sphyrna zygaena
- Spicara flexuosa
- Spicara maena
- Spicara smaris
- Spinachia spinachia
- Spondyliosoma cantharus
- Spratelloides delicatulus
- Sprattus sprattus
- Squaliolus laticaudus
- Squalus acanthias
- Squalus blainvillei
- Squatina aculeata
- Squatina oculata
- Squatina squatina
- Stenodus leucichthys
- Stephanolepis diaspros
- Stephanolepis hispidus
- Sternoptyx diaphana
- Sternoptyx pseudobscura
- Stomias boa
- Stomias brevibarbatus
- Stromateus fiatola
- Stylephorus chordatus
- Sudis hyalina
- Svetovidovia lucullus
- Symbolophorus veranyi
- Symphodus bailloni
- Symphodus cinereus
- Symphodus doderleini
- Symphodus mediterraneus
- Symphodus melanocercus
- Symphodus melops
- Symphodus ocellatus
- Symphodus roissali
- Symphodus rostratus
- Symphodus tinca
- Symphurus ligulatus
- Symphurus nigrescens
- Symphurus reticulatus
- Synaphobranchus kaupi
- Synaptura lusitanica
- Synchiropus phaeton
- Syngnathus abaster
- Syngnathus acus
- Syngnathus phlegon
- Syngnathus rostellatus
- Syngnathus schmidti
- Syngnathus taenionotus
- Syngnathus tenuirostris
- Syngnathus typhle
- Syngnathus variegatus
- Synodus saurus
- Synodus synodus
- Taaningichthys bathyphilus
- Taaningichthys minimus
- Taaningichthys paurolychnus
- Taenioconger longissimus
- Taeniura grabata
- Talismania antillarum
- Talismania homoptera
- Talismania mekistonema
- Taractes asper
- Taractes rubescens
- Taractichthys longipinnis
- Tarpon atlanticus
- Taurulus bubalis
- Tetragonurus atlanticus
- Tetragonurus cuvieri
- Tetrapturus albidus
- Tetrapturus belone
- Tetrapturus georgei
- Tetrapturus pfluegeri
- Thalassobathia pelagica
- Thalassoma pavo
- Theragra finmarchica
- Therapon puta
- Thorogobius ephippiatus
- Thorogobius macrolepis
- Thunnus alalunga
- Thunnus albacares
- Thunnus obesus
- Thunnus thynnus
- Torpedo marmorata
- Torpedo nobiliana
- Torpedo torpedo
- Trachinotus ovatus
- Trachinus araneus
- Trachinus draco
- Trachinus radiatus
- Trachipterus arcticus
- Trachipterus trachypterus
- Trachonurus villosus
- Trachurus mediterraneus
- Trachurus picturatus
- Trachurus trachurus
- Trachurus trecae
- Trachyrhynchus murrayi
- Trachyrhynchus trachyrhynchus
- Trachyscorpia echinata
- Trichiurus lepturus
- Trigla lucerna
- Trigla lyra
- Trigloporus lastoviza
- Triglops murrayi
- Triglops nybelini
- Triglops pingeli
- Triglopsis quadricornis
- Trigonolampa miriceps
- Tripterygion delaisi
- Tripterygion melanurus
- Tripterygion tripteronotus
- Trisopterus esmarki
- Trisopterus luscus
- Trisopterus minutus
- Tylosurus acus
- Tylosurus choram
- Ulcina olriki
- Umbrina canariensis
- Umbrina cirrosa
- Umbrina ronchus
- Uncisudis longirostris
- Upeneus asymmetricus
- Upeneus moluccensis
- Uranoscopus scaber
- Urophycis chuss
- Urophycis tenuis
- Valenciennellus tripunctulatus
- Vanneaugobius pruvoti
- Venefica proboscidea
- Vinciguerria attenuata
- Vinciguerria nimbaria
- Vinciguerria poweriae
- Xenodermichthys copei
- Xiphias gladius
- Xyrichthys novacula
- Zebrus zebrus
- Zenopsis conchifer
- Zeugopterus punctatus
- Zeus faber
- Zoarces viviparus
- Zosterisessor ophiocephalus
- Zu cristatus
Decision path