• Chaetodon robustus
• Chalinura brevibarbis shortbeard grenadier
  
• Chalinura leptolepis
• Chalinura mediterranea mediterranean grenadier
  
• Chalinura profundicola deepwater grenadier
  
• Chauliodus danae dana viperfish
  
• Chauliodus sloani sloane's viperfish
  
• Cheilopogon exciliens flying fish
  poisson volant
  pez volador
  fliegender Fisch
  pesce volante
  letuchaya ryba
  flyvefisk
  poletusa
  chelidonopsaro
  uçan
  ag meofet
  
• Cheilopogon heterurus flying fish
  poisson volant
  pez volador
  fliegender Fisch
  pesce volante
  letuchaya ryba
  flyvefisk
  poletusa
  chelidonopsaro
  uçan
  ag meofet
  
• Cheilopogon pinnatibarbatus flying fish
  poisson volant
  pez volador
  fliegender Fisch
  pesce volante
  letuchaya ryba
  flyvefisk
  poletusa
  chelidonopsaro
  uçan
  ag meofet
  
• Chelon labrosus thicklip grey mullet
  labru
  lisa
  dicklippige Meerasche
  cefalo bosega
  skocac (or cipal) putnik
  diklipharder
  tainha
  velánitsa
  kefal
  kifon belut hassafa
  bouri sudani
  kaplat
  
• Chiasmodon bolangeri
• Chiasmodon niger
• Chilomycterus atringa sapo
  
• Chimaera monstrosa rabbitfish
  chimère
  quimera
  Seeratte
  chimera
  
• Chirolophis ascanii yarrell's blenny
  hornkvabbe
  buskhoved
  tångsnärta
  kambrislungur
  
• Chirostomias pliopterus
• Chlamydoselachus anguineus Frilled shark
  Requin lezard
  Tiburon anguila
  Kragenhai
  plascenosnaja akula
  kravehai
  kråshaj
  
• Chlopsis bicolor bicoloured false moray
  
• Chlorophthalmus agassizii shortnose greeneye
  
• Chromis chromis damsel fish
  castagnole
  castañuela
  castagnola
  
• Chromogobius quadrivittatus banded goby
  gobie à quatre bandes
  ghiozzo quadrifasciato
  glavocic plosac
  
• Chromogobius zebratus kolombatovic's goby
  
• Ciliata mustela five-beard rockling
  motelle à cinq barbillons
  fünfbärtelige Seequappe
  pyatiusyi nalim
  firtraadet tang-brosme
  femtrådet hawkvabbe
  lompje
  
• Ciliata septentrionalis northern rockling
  nordisk tangbrosme
  noorse meun
  
• Citharus linguatula spotted flounder
  fausse limande
  solleta
  linguattola
  
• Clinitrachus argentatus bevecca
  reboa
  
• Clupea harengus atlantic herring
  hareng commun
  arenque
  Hering
  belomorskaya sel'd
  sild
  haring
  silakka
  sill
  sled
  
• Clupeonella cultriventris tyulka sprat
  clupeonelle
  kaspiiskaja tyulka
  tzatza
  gingirica
  
• Coccorella atlantica atlantic sabretooth
  
• Coelorhynchus abditilux merrett's grenadier
  
• Coelorhynchus coelorhynchus blackspot grenadier
  
• Coelorhynchus occa spear-snouted grenadier
  
• Conger conger conger eel
  congre
  congrio
  meeraal
  grongo
  ugor
  zeepaling
  congro
  mongri
  migri
  qonger mazuy
  cungri
  
• Conocara fiolenti fiolenti's smooth-head
  
• Conocara macroptera longfin smooth-head
  
• Conocara microlepis elongate smooth-head
  
• Conocara murrayi murray's smooth-head
  
• Conocara salmonea salmon smooth-head
  
• Conocara werneri werner's smooth-head
  
• Corcyrogobius liechtensteini liechtenstein's goby
  
• Coregonus albula vendace
  coregone blanc
  Maräne
  europeiskaja riapushka
  lakesild
  helting
  mixikkú maiva
  siklöja
  sielawa
  
• Coregonus autumnalis arctic cisco
  cisco arctique
  omul
  
• Coregonus lavaretus houting
  coregone Lavaret
  Andermaräne
  sig
  snaebel
  grote marene
  siika
  grundsik
  sieja
  
• Coregonus sardinella cisco sardinelle
  belomorskaya ryapushka
  
• Coris julis rainbow-wrass
  girelle
  julia
  Meerjunker
  donzella
  junkergylte
  knez du guja
  ghylos
  günes
  yulit
  
• Coryphaena equiselis pompano dolphin
  coryphène dauphin
  dorado
  
• Coryphaena hippurus common dolphin-fish
  coryphène commune
  corifena
  lampuga
  dourado
  kynigos
  
• Coryphaenoides guentheri günther's grenadier
  
• Coryphaenoides macrocephalus madeiran grenadier