Whenever you see an idiom stating that something is "a different _______" (a different kettle of fish, a horse of a different color, etc), it just means that whatever topic has just been mentioned is totally different from what was spoken before.
For example, if the topic of conversation is gambling, and someone mentions the game of bingo, a person might say "That's a whole different kettle of fish -- bingo isn't really gambling at all."
A fish out of water is in an alien environment. If you say that someone is "a fish out of water," then you are saying they are out of their element. Stan the accountant was a fish out of water at the plumbing convention.
From a Laurel & Hardy movie.
to have more important things to do
This is not an idiom. Idioms make little or no sense unless you know the definition. This sentence makes perfect sense, so it is not an idiom. The dead fish smelled so bad that even as high as Heaven, you could smell them.
The phrase "How much is the fish?" has no meaning, other than that associated with pricing fish at the market.It is the title of a song by a German Techno music group called Scooter in June 1998, but apart from this, it is not used in an everyday or academic context by English speakers."Thanks for all the fish" is an entirely different story.
I have bigger fish to fry is an idiom. An idiom is a phrase that is commonly used in certain areas that may have a funny meaning.
A kettle fish is a slang term. The phrase kettle fish means an awkward, difficult or very bad situation; muddle; or a mess of a problem. A person does not want to be in a kettle of fish.
Please bring the kettle of fish to the side table.
The phrase, 'a different kettle of fish', can be used in varying contexts and can indicate that a topic being spoken of is much different or that something is an anomaly when compared to what is expected. For instance, if two people are having a discussion and the first person mentions something the second person considers to be outlandish or changes the subject to something the second person does not have knowledge of, the second person could exclaim, 'Now that, my friend, is a different kettle of fish!'
A fish out of water is in an alien environment. If you say that someone is "a fish out of water," then you are saying they are out of their element. Stan the accountant was a fish out of water at the plumbing convention.
May Johnstone has written: '1992 - a different kettle of fish' 'Training opportunities for fish farmers'
According to Dictionary.com, the term alludes to the Scottish riverside picnic called kettle of fish, where freshly caught salmon were boiled and eaten out of hand. [Early 1700s]
Kettle of Fish - 2006 is rated/received certificates of: Portugal:M/12 Singapore:NC-16 USA:R
it means you smell like fish!
JUAN: The Canadians took everything: our passports, our phones, and even our sunscreen. ELOISE: Well, this is a fine kettle of fish.
This usually appears as "a fine kettle of fish." The origin is unclear, but it usually describes a situation where everything has gone wrong. For example "I locked myself out of my car, I got a parking ticket and my recovery service took two hours to reach me. It's a fine kettle of fish!"
Boiling. Just as cracking is a type of breaking, kettle is a type of device used for boiling water or other liquid.