another kettle of fish

USAGE SUMMARY

The phrase "another kettle of fish" is correct and usable in written English. You can use it to indicate a different situation or issue that is more complicated or distinct from the one previously mentioned. For example: "I thought the project would be straightforward, but managing the team is another kettle of fish." Alternative expressions include "a different story," "a whole new ball game," and "a different matter."

✓ Grammatically correct

News & Media

Reference

Human-verified examples from authoritative sources

Exact Expressions

12 human-written examples

"Well, Castro is another kettle of fish.

Independent

Alex, meanwhile, is another kettle of fish.

The Guardian - TV & Radio

(The one exception has always been Kenneth W. Starr, the independent counsel who investigated his attempts to cover up his affair with Ms. Lewinsky in a sexual harassment lawsuit. "That's another kettle of fish," he once said).

The New York Times

Pseudo crises are another kettle of fish.

Forbes

You can also say to be another kettle of fish.

BBC

You could get one 3D printed," said Nick Allen, founder of London-based printing company 3D Print UK. "Whether the company would release the data for you to make that product is another kettle of fish".

BBC

Human-verified similar examples from authoritative sources

Similar Expressions

48 human-written examples

[Laughs.] That's another whole kettle of fish.

The New Yorker

But there's another part to this story, a somewhat different kettle of fish, but still relevant.

Huffington Post

"We are usually in a fine kettle of fish for one reason or another having to do with our dysfunctional government".

The New York Times

The euro is a different kettle of fish altogether.

Independent

Birth control is a whole different kettle of fish.

The Economist

Expert writing Tips

Best practice

Use "another kettle of fish" specifically when you want to signal that a new topic or problem is not just different, but often more complex or significant than the one previously discussed. It works best as a transitional device at the end of a thought or as a predicate nominative after the verb "to be".

Common error

Avoid using "another kettle of fish" when you actually mean a mess or a muddled situation. That specific meaning belongs to the related but distinct idiom "a fine kettle of fish". While both use the same imagery, the former marks a distinction, whereas the latter describes a troublesome predicament.

Linguistic Context

In a sentence, "another kettle of fish" typically functions as a noun phrase acting as a subject complement. It almost always follows a linking verb, most commonly "is" or "was". Ludwig AI examples show it is frequently used to provide a sharp contrast between two subjects, often closing a sentence to emphasize the shift in scope or difficulty.

Expression frequency: Common

Frequent in

News & Media

85%

Reference

10%

Social Media

5%

Less common in

Academia

3%

Formal & Business

2%

Science

1%

Ludwig's WRAP-UP

In conclusion, "another kettle of fish" is a robust and widely accepted English idiom used to highlight a significant difference between two topics. According to Ludwig, it is most prevalent in high-quality journalism, where writers use it to pivot from a manageable situation to one that is more demanding or distinct. While it shares visual imagery with other "fish" idioms, its specific function is contrastive. When using this phrase, ensure that the shift you are describing is substantial enough to warrant such an emphatic idiomatic marker. For more formal contexts, consider more literal alternatives like "a separate issue", but for engaging editorial prose, "another kettle of fish" remains an excellent choice.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

a different story

replaces the kitchen metaphor with a narrative one to indicate a change in circumstances

a whole new ball game

uses a sports metaphor to emphasize a much higher level of complexity or a complete change in rules

a different matter entirely

strips away the idiomatic metaphor for a more direct and formal tone

a horse of a different color

uses a different traditional idiom to mark a distinction in kind rather than just degree

another story altogether

adds an intensifier to emphasize the separation between the two subjects

a different beast

implies that the new subject has its own unique and perhaps wilder characteristics

apples and oranges

focuses on the fact that the two things cannot be compared reasonably

something else entirely

offers a generic but highly flexible way to separate one topic from another

a far cry from

focuses specifically on the distance or degree of difference between two items

quite another thing

uses a simpler structure often found in spoken British English

FAQs

What does "another kettle of fish" mean in a sentence?

It is an idiom used to describe a situation or subject that is completely different from the one previously mentioned. For example, you might say a small project was easy, but managing a large team is "a different story" or "another kettle of fish".

Is it "another kettle of fish" or "a different kettle of fish"?

Both are correct and used interchangeably. Data from Ludwig shows that "a different kettle of fish" is actually slightly more frequent in high-quality news sources like The Guardian.

Can I use "another kettle of fish" in formal writing?

While it appears frequently in reputable news outlets, it is still an idiom. In very formal academic papers, you might prefer "a different matter" or "a distinct issue".

What is the difference between "another kettle of fish" and "a fine kettle of fish"?

"another kettle of fish" means a different thing altogether, while "a fine kettle of fish" refers to a difficult or awkward mess.