Fish in this spot might you catch? (3)

I believe the answer is:

sea

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

I don't understand the rest of the clue.

(Other definitions for sea that I've seen before include "Ocean area" , "North, say" , "Expanse of salt water" , "7 [ship] s on this" , "Cod's home?" .)

I've seen this clue in The Sun.

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