another kettle of fish

another kettle of fish

Any issue or matter that is entirely different in scope, description, or nature from that which was just being discussed. A: "So you like your first two roommates, but what about your third one?" B: "William? Oh, he's another kettle of fish altogether." I suppose we should start looking at buying a house now that our baby is on the way, but that's another kettle of fish!
See also: another, fish, kettle, of

be another kettle of fish

To be entirely different in scope or description from someone or something that was just being discussed. A: "So you like your first two roommates, but what about your third one?" B: "William? Oh, he's another kettle of fish altogether." I suppose we should start looking at buying a house now that our baby is on the way, but that's another kettle of fish!
See also: another, fish, kettle, of
Farlex Dictionary of Idioms.
See also:
  • be another kettle of fish
  • kettle
  • be a different kettle of fish
  • a different kettle of fish
  • be a whole other kettle of fish
  • another pair of shoes
  • another story
  • answer to the description (of)
  • answer to the description of
  • scope out
References in periodicals archive
But the Grimscar Valley project is another kettle of fish. Do we take away what should be left to our children to enjoy?
Chalk and cheese plans The [...]; FEEDBACK
Vishal Bhardwaj's follow-up to his critically acclaimed "Kaminey" is another kettle of fish, light on action sequences and driven largely by sharply defined characters whose peccadilloes make for a very enjoyable ride.
7 Sins Forgiven
We had a strategy that worked well but against France it'll be another kettle of fish.'
World Cup opener is a try-fest for Hewitt's Welsh starlets
Well, that's another kettle of fish. Any film that depicts us as alcoholic, calorie-counting, choc- and man-obsessed lunatics may be just a little close to the mark.
M Fashion: Fashion lounge - Checking out
But writing a love story is another kettle of fish entirely and it was a mistake for Cameron to have done it himself.
Gym'll fix it as Sam gets shirty