Is a tropical cod fishy? (11)

I believe the answer is:

piscatorial

'fishy?' is the definition.
(piscatorial means relating to fishing)

'is a tropical cod' is the wordplay.
'cod' indicates anagramming the letters (cod can mean fake or inauthentic).
'is'+'a'+'tropical'='isatropical'
'isatropical' anagrammed gives 'PISCATORIAL'.

(Another definition for piscatorial that I've seen is " Concerning fishing".)

I've seen this clue in The Times.

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