Crossword Genius

Fish certainly around island (8)

Ross

I believe the answer is:

anglesey

'island' is the definition.
(I've seen this before)

'fish certainly around' is the wordplay.
'fish' becomes 'angle' (synonyms).
'certainly' becomes 'yes' (I've seen this before).
'around' is a reversal indicator.
'yes' written backwards gives 'sey'.
'angle'+'sey'='ANGLESEY'

(Other definitions for anglesey that I've seen before include "Welsh county" , "Some Welsh ground" , "Island off N.Wales" , "Island of North Wales" , "part of North Wales" .)

I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.