different kettle of fish

be a different kettle of fish

To be entirely different in scope or description from someone or something that was just being discussed. Steve: "So you like your first two roommates, but what about your third one?" Joe: "William? Oh, he's a different kettle of fish altogether." I suppose we could start looking at buying a house now that our baby is on the way, but that's an entirely different kettle of fish!
See also: different, fish, kettle, of

different kettle of fish

Entirely different in scope or description from someone or something that was just being discussed. Steve: "So you like your first two roommates, but what about your third one?" Joe: "William? Oh, he's a different kettle of fish altogether." I suppose we could start looking at buying a house now that our baby is on the way, but that's an entirely different kettle of fish!
See also: different, fish, kettle, of

a different kettle of fish

or

another kettle of fish

BRITISH
COMMON You say that something is a different kettle of fish or another kettle of fish to emphasize that it is completely unlike another thing that you are mentioning. Artistic integrity? Who needs it? Money? Now that's a completely different kettle of fish. Howard was a sweetheart. But Clarisse was another kettle of fish.
See also: different, fish, kettle, of

a different kettle of fish

a completely different matter or type of person from the one previously mentioned. informal
1993 Empire Meryl is the finest actress of her generation but Arnold is, er, a different kettle of fish.
See also: different, fish, kettle, of

a different kettle of ˈfish

(informal) a person or thing that is completely different from somebody/something else previously mentioned: You may be able to read French well, but speaking it fluently is a different kettle of fish entirely.
A kettle in this idiom is a pan in which you can cook a whole fish.
See also: different, fish, kettle, of
References in periodicals archive ?
"I feel as though I could still do a job, although whether that's still with Celtic is a different kettle of fish.
Jol said: "Defoe is the best finisher in the league around the box, but coming off the bench against a team like Famagusta is a different kettle of fish to playing in the Premiership.
Used to the slow and low bounce of pitches back home, the Pakistan batsmen will find the WACA a different kettle of fish.
Their first campaign last year was one of mixed fortunes losing more matches than won, but this year has been a completely different kettle of fish.
Dalziel said: "This will be a different kettle of fish. Airdrie are a very well disciplined side.
Q WHERE does the saying "a different kettle of fish" come from?
Should prove a different kettle of fish now she steps up to a mile.
Arsenal are a different kettle of fish but we can beat them."
The Frenchman did not have much to beat once Andre Agassi had chucked in the towel on Wednesday and he is likely to find Corretja a different kettle of fish altogther.
Ponty were far too strong for Glasgow with home advantage in their opening Pool Six encounter two weeks ago, but Leicester are an entirely different kettle of fish.
"I don't think the Australians showed us too much against Romania, and they're going to be a totally different kettle of fish this time.
As expected, Henman made mincemeat of his French Open conqueror Sargis Sargsian in the second round but Ivanisevic, twice a Wimbledon finalist, is a different kettle of fish altogether.
When you get the European spirit going it will be a different kettle of fish."
"Barca are a different kettle of fish. I'm not sure it will affect them, but you saw last season it affected City when we beat them 3-0, it affected Roma.
Fulham can't stop conceding and will suffer a fourth straight defeat 3 Chelsea 1 Tottenham 2 TOTTENHAM were stung by their defeat at Burnley and they can take advantage of the chaos which seems to be engulfing Chelsea by taking all three points at Stamford Bridge 4 Liverpool 3 Watford 1 WATFORD rattled five past Cardiff City and have three successive wins in all competitions, but this is a different kettle of fish. Liverpool to turn on the winning style once again 5 ManCity3 West Ham 0 BUOYED by their Carabao Cup final win and keen to keep the pressure on leaders Liverpool, it's hard to see top-scoring City missing out on the chance to add to their 74 goals so far
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