Crossword Genius

People regularly want fish (7)

Ross

I believe the answer is:

pollack

'fish' is the definition.
(pollack is a kind of fish)

'people regularly want' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'want' becomes 'lack' ('lack' can be a synonym of 'want').
The alternate letters of 'people' are 'pol'.
'pol'+'lack'='POLLACK'

(Another definition for pollack that I've seen is " Food fish of the cod family".)

I've seen this clue in The Telegraph.
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