Deep sea fish are fish which live in the deep and dark waters far below the surface. So it depends what you really mean to say. 'Deep sea fishing' simply means fishing in ocean waters away from the coast
and the fish caught such as sharks and tuna, are actually not 'deep water fish'
in the strictest sense.
These fish would just be referred to as 'ocean fish' or 'deep water fish'.
Deep sea fishは、海面からかなり離れた深く暗い海に住んでいる魚のことです。ですからどう表現するかは、何を実際に伝えたいかによります。 'Deep sea fishing' は、海岸から離れた海で魚を釣ることですので、サメやマグロのような魚を釣ってもそれらは、実際厳密に言えば深海魚ではありません。
これらの魚は'ocean fish'又は 'deep water fish 'と表現します。
「深海魚」は「deep sea fish」となると思います。
「deep sea」は「深海」という意味です。
「魚」は「fish」ですね。
例）
“I still have three more things to do on the list – meet John Cleese, catch a deep sea fish and have a picture published in a national newspaper,” he adds.
〔Express.co.uk-Jul 1, 2013〕
回答は一例です
参考にしてください
ありがとうございました
A deep water fish could apply to any body of water which is deep. If you say "deep ocean fish" it will apply that it is a fish that only lives in the ocean. You can replace the word, "ocean" for any body of water!
A deep water fish を深いところに住んでいるあらゆる魚に使うことが出来ます。"deep ocean fish"と言えば、海に暮らしている魚だけに使うことが出来ます。"ocean"という語をあらゆる水に置き換えることが出来ます。
A fish that lives in the very deep parts of the sea
When talking about a fish that lives in very deep parts of the ocean, then you can use the following phrases:
-A fish that lives in the very deep parts of the sea
-deep sea fish
Usually, you would the names of the actual fish like "whale", "dolphin", etc.
海の深層部に住んでいる魚について言う場合、以下のようなフレーズが使えます：
-A fish that lives in the very deep parts of the sea
（海の深層に住んでいる魚）
-deep sea fish
（深海魚）
大抵は、"whale"（クジラ）、"dolphin"（イルカ）など、実際の名前を使って言います。
A fish that lives deep in the ocean/water far below the surface are referred to as 'deep sea fish'
the most common type of deep sea fish is the 'lanternfish' but you could also refer to the exact fish you are talking about to explain this
深海魚のことを”Deep Fish Sea"と言います。
最も一般的な深海魚は”Lanternfish"（ハダカイワシ）ですが、具体的にどの深海魚のことを言っているのか説明しても良いでしょう。
Fish that live in deep parts of the ocean.
Deep sea fish live deep beneath the surface of the ocean, where there is no sunlight.
Examples:
We took a charter boat out to do some deep sea fishing.
We took a charter boat four hours out to sea to do some deep sea fishing.
A fish that lives in deeper levels of water within the ocean is called a, "deep sea fish."
Example sentences :
- I have never seen a deep sea fish, as I am scared of SCUBA diving.
- Deep sea fish are very expensive because they are hard to catch/fish for.
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