Crossword Genius

Flounder -- when caught out of place? (1,4,3,2,5)

Ross

I believe the answer is:

a fish out of water

I'm a little stuck... Click here to teach me more about this clue!

'flounder when caught' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'out of place?' is the wordplay.
I cannot really understand how this works, but
an anagram of 'out' is 'uto' which is present in the answer.
'of' could be 'o' and 'o' is located in the answer.
'place?' could be 'is' (I've seen this in other clues) and 'is' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for a fish out of water that I've seen before include "Catch" , "one feeling out of place" , "one unsuited to situation" .)

I've seen this clue in The Telegraph.
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