Will only have fish and chips if someone does Haddock. Cod, IMHO has a very strong taste. However, I know it is what is served in the Chippers in England, so it should be very popular in Calis and perhaps more so than Vietnamese catfish?
I have read in the past that Whiting (Mezigit) is the fish that is used most for fish and chips in the Calis/Fethiye area.